Patent Application
20110094937
1. Field
Embodiments of the present invention generally relate to extraction processes for processing hydrocarbons. More particularly, embodiments of the present invention relate to processes for upgrading one or more hydrocarbons using a solvent de-asphalting unit.
2. Description of the Related Art
Solvent de-asphalting (“SDA”) processes have been used to treat residuum (“residual”) oil. Traditional refinery distillation processes separate light hydrocarbon compounds from feedstocks, leaving a large volume of residual oil that is primarily heavy hydrocarbons. SDA processes have been used to treat the heavy hydrocarbons with a solvent to generate asphaltenic and de-asphalted oil (“DAO”) products. The asphaltenic and DAO products are typically treated and/or processed into useful products.
DAO can be economically attractive when downstream treatment facilities such as hydrotreating or fluid catalytic cracking (“FCC”) are adequately sized to process the large volume of DAO generated when treating residuum. However, hydrocracking the DAO requires a capital intensive, high-pressure, system to fractionate the large quantity of DAO, especially when intermediate products such as diesel, gas oil, and/or kerosene are preferred.
A need, therefore, exists for an improved process for upgrading residuum hydrocarbons while minimizing capital investment.
So that the manner in which the above recited features of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to embodiments, some of which are illustrated in the appended drawings. It is to be noted, however, that the appended drawings illustrate only typical embodiments of this invention and are therefore not to be considered limiting of its scope, for the invention may admit to other equally effective embodiments.
A detailed description will now be provided. Each of the appended claims defines a separate invention, which for infringement purposes is recognized as including equivalents to the various elements or limitations specified in the claims. Depending on the context, all references below to the “invention” may in some cases refer to certain specific embodiments only. In other cases it will be recognized that references to the “invention” will refer to subject matter recited in one or more, but not necessarily all, of the claims. Each of the inventions will now be described in greater detail below, including specific embodiments, versions and examples, but the inventions are not limited to these embodiments, versions or examples, which are included to enable a person having ordinary skill in the art to make and use the inventions, when the information in this patent is combined with available information and technology.
Systems and methods for processing one or more hydrocarbons are provided. A hydrocarbon can be selectively separated to provide one or more finished products and an asphaltenic hydrocarbon using a pretreatment process. The asphaltenic hydrocarbon can be selectively separated to provide a deasphalted oil and one or more asphaltenes. At least a portion of the deasphalted oil can be converted to one or more first products using a first post-treatment process. At least a portion of the one or more asphaltenes can be converted to one or more second products using a second post-treatment process.
As used herein, the terms “solvent” and “solvents” can refer to one or more alkane or alkene hydrocarbons having three to seven carbon atoms (C3 to C7), mixtures thereof, derivatives thereof and combinations thereof. In one or more embodiments, the solvent can have a normal boiling point (for pure solvents) or bulk normal boiling point (for solvent mixtures) of less than 538° C.
As used herein, the terms “asphaltene,” “asphaltenes,” “asphaltenic hydrocarbon,” and “asphaltenic hydrocarbons” can refer to one or more hydrocarbons that are insoluble in n-alkanes but are totally or partially soluble in aromatics such as benzene and/or toluene. Asphaltenes can consist primarily of carbon, hydrogen, nitrogen, oxygen, and sulfur, as well as trace amounts of vanadium and nickel. Asphaltenes can have a carbon-to-hydrogen (“C:H”) ratio of about 1:2, about 1:1.5, about 1:1.2, or about 1:1. In one or more embodiments, asphaltenes can be an n-heptane (C7H16) insoluble and toluene (C6H5CH3) soluble component of a carbonaceous material such as crude oil, bitumen or coal. In one or more embodiments, asphaltenes can have a molecular mass distribution in the range of from about 400 u to about 1500 u.
The terms “light deasphalted oil” and “L-DAO” as used herein can refer to a solution or mixture containing one or more hydrocarbons sharing similar physical properties and containing less than about 5% wt, less than about 4% wt, less than about 3% wt, less than about 2% wt, or less than about 1% asphaltenic hydrocarbons. In one or more embodiments, the L-DAO can have a boiling point ranging from a low of about 250° C., about 275° C., or about 315° C. to a high of about 600° C., about 675° C., about 750° C., or more. In one or more embodiments, the L-DAO can have a viscosity (at 50° C.) of about 30 cSt to about 75 cSt, about 35 cSt to about 70 cSt, or about 40 cSt to about 65 cSt. In one or more embodiments, the L-DAO can have a flash point greater than about 110° C., greater than about 115° C., greater than about 120° C., greater than about 130° C., or more.
The terms “heavy deasphalted oil” and “H-DAO” as used herein can refer to a solution or mixture containing one or more hydrocarbons sharing similar physical properties and containing less than about 5% wt, less than about 4% wt, less than about 3% wt, less than about 2% wt, or less than about 1% asphaltenic hydrocarbons. In one or more embodiments, the H-DAO can have a boiling point of about 300° C. to about 900° C., about 350° C. to about 850° C., or about 400° C. to about 800° C. In one or more embodiments, the H-DAO can have a viscosity (at 50° C.) of about 40 cSt to about 190 cSt, about 45 cSt to about 180 cSt, or about 50 cSt to about 170 cSt. In one or more embodiments, the H-DAO can have a flash point greater than about 135° C., greater than about 140° C., greater than about 145° C., greater than about 150° C., or more.
The terms “deasphalted oil” and “DAO” as used herein refer to a mixture of light deasphalted and heavy deasphalted oils.
In one or more embodiments, the hydrocarbon in line 105 can include, but is not limited to, one or more carbon-containing materials whether solid, liquid, gas, or any combination thereof. The carbon-containing materials can include but are not limited to, whole crude oil, crude oil, vacuum gas oil, heavy gas oil, residuum, atmospheric tower bottoms, vacuum tower bottoms, distillates, paraffins, aromatic rich material from solvent deasphalting units, aromatic hydrocarbons, naphthenes, oil shales, oil sands, tars, bitumens, kerogen, waste oils, derivatives thereof, or mixtures thereof. In one or more embodiments, the hydrocarbon in line 105 can have an API Gravity at 15.6° C. ranging from a low of about −12, about 0, about 5, or about 10 to a high of about 20, about 25, about 30, or about 35. In one or more embodiments, the hydrocarbon in line 105 can have an API Gravity at 15.6° C. of from about −12 to about 20, or from about 5 to about 23, or from about 10 to about 30. In one or more embodiments, the paraffin content of the hydrocarbon in line 105 can range from a low of about 30% vol, about 35% vol, or about 40% vol to a high of about 55% vol, about 60% vol, or about 65% vol. In one or more embodiments, the aromatic hydrocarbon content of the hydrocarbon in line 105 can range from a low of about 2% vol, about 7% vol, or about 12% vol to a high of about 20% vol, about 50% vol, or about 80% vol. In one or more embodiments, the naphthene content of the hydrocarbon in line 105 can range from a low of about 0% vol, about 10% vol, or about 20% vol to a high of about 25% vol, about 30% vol, or about 35% vol. In one or more embodiments, the hydrocarbon in line 105 can have a C:H ratio of from about 0.8:1, about 1:1, about 1:1.1, about 1:1.2, about 1:1.3, or about 1:1.4.
The one or more mixers 110 can be one or more system, device, or combination of systems and/or devices suitable for batch, intermittent, and/or continuous mixing of the hydrocarbon and the solvent. The mixer 110 can be capable of homogenizing immiscible fluids. Illustrative mixers can include but are not limited to ejectors, inline static mixers, inline mechanical/power mixers, homogenizers, or combinations thereof. The mixer 110 can operate at temperatures of about 25° C. to about 600° C., about 25° C. to about 500° C., or about 25° C. to about 300° C. The mixer 110 can operate at a pressure slightly higher than the pressure of the separator 120. In one or more embodiments, the mixer can operate at a pressure of about 101 kPa to about 2,100 kPa above the critical pressure of the solvent (“PC,S”), about PC,S−700 kPa to about PC,S+2,100 kPa, about PC,S−500 kPa to about PC,S+1,500 kPa, about PC,S−300 kPa to about PC,S+700 kPa.
The hydrocarbon mixture in line 112 can be introduced to the one or more separators (“asphaltene separators”) 120 to provide a deasphalted oil (“DAO”) mixture via line 122 and an asphaltenic mixture via line 128. The DAO mixture in line 122 can contain deasphalted oil and a first portion of the solvent. The asphaltenic mixture in line 128 can contain insoluble asphaltenes and the balance of the solvent. In one or more embodiments, the DAO concentration in line 122 can range from about 1% wt to about 50% wt, about 5% wt to about 40% wt, or about 14% wt to about 34% wt. In one or more embodiments, the solvent concentration in line 122 can range from about 50% wt to about 99% wt, about 60% wt to about 95% wt, or about 66% wt to about 86% wt. In one or more embodiments, the specific gravity (API density@15.6° C.) of the DAO mixture in line 122 can range from about 10° API to about 100° API, about 30° API to about 100° API, or about 50° API to about 100° API.
In one or more embodiments, the asphaltenic mixture in line 128 can have an asphaltene concentration of from about 10% wt to about 99% wt, about 30% wt to about 95% wt, or about 50% wt to about 90% wt. In one or more embodiments, the asphaltenic mixture in line 128 can have a solvent concentration of from about 1% wt to about 90% wt, about 5% wt to about 70% wt, or about 10% wt to about 50% wt.
The one or more separators 120 can include one or more systems, devices, or combination of systems and/or devices suitable for separating one or more asphaltenes from the hydrocarbon and solvent mixture to provide deasphalted oil via line 122 and asphaltenes via line 128. In one or more embodiments, the one or more separators 120 can contain one or more internal structures including, but not limited to bubble trays, packing elements such as rings or saddles, structured packing, or combinations thereof. In one or more embodiments, the one or more separators 120 can be an open column without internals. In one or more embodiments, the one or more separators 120 can be one or more partially empty columns containing one or more internal structures. In one or more embodiments, the separators 120 can operate at a temperature of about 15° C. to about 150° C. above the critical temperature of the one or more solvent (“TC,S”), about 15° C. to about TC,S+100° C., or about 15° C. to about TC,S+50° C. In one or more embodiments, the separators 120 can operate at a pressure of about 101 kPa to about 2,100 kPa above the critical pressure of the solvent (“PC,S”), about PC,S−700 kPa to about PC,S+2,100 kPa, about PC,S−500 kPa to about PC,S+1,500 kPa, about PC,S−300 kPa to about PC,S+700 kPa.
In one or more embodiments, the asphaltenes in line 128 can be heated using one or more heat exchangers 115, prior to introduction to the one or more strippers 130. In one or more embodiments, the asphaltenes in line 128 can be heated to a temperature of about 100° C. to about TC,S+150° C., about 150° C. to about TC,S+100° C., or about 300° C. to about TC,S+50° C. using one or more heat exchangers 115.
The one or more heat exchangers 115 can include one or more systems, devices, or combination of systems and/or devices suitable for increasing the temperature of the asphaltenes in line 128. Illustrative heat exchanger systems or devices can include, but are not limited to shell-and-tube exchangers, plate and frame exchangers, spiral wound exchangers, or any combination thereof. In one or more embodiments, a heat transfer medium such as steam, hot oil, hot process fluids, electric resistance heat, hot waste fluids, or combinations thereof can be used to transfer heat to the asphaltenes in line 128. In one or more embodiments, the one or more heat exchangers 115 can be a direct fired heater or the equivalent. In one or more embodiments, the one or more heat exchangers 115 can operate at a temperature of about 25° C. to about TC,S+150° C., about 25° C. to about TC,S+100° C., or about 25° C. to about TC,S+50° C. In one or more embodiments, the one or more heat exchangers 115 can operate at a pressure of about 101 kPa to about PC,S+2,100 kPa, about 101 kPa to about PC,S+1,500 kPa, or about 101 kPa to about PC,S+700 kPa.
Within the stripper 130, the solvent in the asphaltenes in line 128 can be selectively separated to provide a recovered solvent via line 132 and asphaltenes (“asphaltene product”) via line 133. In one or more embodiments, the recovered solvent in line 132 can contain a first portion of the solvent and small quantities of residual DAO, and the asphaltenes in line 133 can contain a mixture of insoluble asphaltenes and the balance of the solvent. In one or more embodiments, the recovered solvent in line 132 can have a solvent concentration ranging from a low of about 50% wt, about 70% wt, or about 80% wt to a high of about 90% wt, about 95% wt, about 99% wt, or more. In one or more embodiments, the recovered solvent in line 132 can contain less about 5% wt, less than about 3% wt, less than about 1% wt, or less than about 0.5% wt DAO. In one or more embodiments, the asphaltene product in line 133 can have an asphaltene concentration ranging from a low of about 20% wt, about 40% wt, or about 50% wt to a high of about 75% wt, about 80% wt, about 95% wt, or more.
In one or more embodiments, steam, for example saturated or superheated, can be injected into the one or more strippers 130 via line 134 to further enhance the separation of the asphaltenes from the solvent. In one or more embodiments, the steam in introduced to the one or more strippers 130 via line 134 can be at a pressure ranging from about 200 kPa to about 2,160 kPa, from about 300 kPa to about 1,475 kPa, or from about 400 kPa to about 1,130 kPa.
In one or more embodiments, the asphaltene product in line 133 can have a solvent concentration ranging from a low of about 1% wt, about 5% wt, about 10% wt, or about 20% wt to a high of about 50% wt, about 60% wt, about 70% wt, or about 80% wt. In one or more embodiments, the specific gravity (at 15.6° C.) of the asphaltene product in line 133 can range from a low of about −15° API, about −10°, or about −5° to a high of about 5°, about 10°, or about 15° or more. In one or more embodiments, at least a portion of the asphaltene product in line 133 can be dried and pelletized. In one or more embodiments, at least a portion of the asphaltene product in line 133 can be gasified to provide one or more gas products for power generation, process heating, or combinations thereof. In one or more embodiments, at least a portion of the asphaltene product in line 133 can be combusted or otherwise converted to provide steam, mechanical power, electrical power, or any combination thereof.
The one or more strippers 130 can include one or more systems, devices, or combination of systems and/or devices suitable for selectively separating the asphaltenes in line 128 to provide the recovered solvent via line 132 and the asphaltene product via line 133. In one or more embodiments, the one or more strippers 130 can contain one or more internal structures including, but not limited to bubble trays, packing elements such as rings or saddles, structured packing, or combinations thereof. In one or more embodiments, the one or more strippers 130 can be an open column without internals. In one or more embodiments, the one or more strippers 130 can be one or more partially empty columns containing one or more internal structures. In one or more embodiments, the one or more strippers 130 can operate at a temperature of about 30° C. to about 600° C., about 100° C. to about 550° C., or about 300° C. to about 550° C. In one or more embodiments, the one or more strippers 130 can operate close to zero pressure, for example at about 0.1 kPa. In one or more embodiments, the one or more strippers 130 can operate at a pressure ranging from a low of about 30 kPa, about 100 kPa, about 500 kPa, or about 1,000 kPa to a high of about 2,500 kPa, about 3,300 kPa, about 4,000 kPa, or about 4,500 kPa.
Referring again to the one or more asphaltene strippers 120, the DAO mixture in line 122 can be heated using one or more heat exchangers 145, 148 to provide a heated DAO mixture via line 124. In one or more embodiments, the temperature of the heated DAO mixture in line 124 can be increased above the critical temperature of the solvent TC,S. In one or more embodiments, the heated DAO mixture in line 124 can have a temperature of from about 25° C. to about TC,S+150° C., about TC,S−100° C. to about TC,S+100° C., or about TC,S−50° C. to about TC,S+50° C.
The one or more heat exchangers 145, 148 can include one or more systems, devices, or combination of systems and/or devices suitable for increasing the temperature of the DAO mixture in line 122. In one or more embodiments, the heat exchanger 145 can be a regenerative type heat exchanger using a high temperature process stream to heat the DAO mixture in line 122 prior to introduction to the separator 150. In one or more embodiments, a recovered solvent via line 152 can be introduced to the heat exchanger 145 to heat the DAO mixture introduced via line 122. In one or more embodiments, the one or more heat exchangers 145, 148 can operate at a pressure of about 101 kPa to about PC,S+2,100 kPa, about 101 kPa to about PC,S+1,500 kPa, or about 101 kPa to about PC,S+700 kPa.
The heated DAO mixture via line 124 can be introduced to the one or more separators 150 and selectively separated therein to provide a recovered solvent via line 152 and DAO via line 158. In one or more embodiments, the recovered solvent in line 152 can contain a first portion of the solvent, and the deasphalted oil in line 158 can contain DAO and the balance of the solvent. In one or more embodiments, the recovered solvent in line 152 can have a solvent concentration ranging from a low of about 50% wt, about 70% wt, or about 85% wt to a high of about 95% wt, about 98%, about 99%, or more, with the balance being DAO. In one or more embodiments, in the deasphalted oil in line 158 can have a DAO concentration ranging from a low of about 20% wt, 40% wt, or about 50% wt to a high of about 80% wt, 90% wt, about 95% wt, or more, with the balance being the solvent. In one or more embodiments, the deasphalted oil in line 158 can have a specific gravity (API density at 15.6° C.) ranging from a low of about 5°, about 10°, or about 12° to a high of about 20°, about 25°, about 30°, or more.
The one or more separators 150 can include one or more systems, devices, or combination of systems and/or devices suitable for separating the DAO mixture introduced via line 122 to provide a the recovered solvent in line 152 and the DAO in line 158. In one or more embodiments, the one or more separators 150 can contain one or more internal structures including, but not limited to bubble trays, packing elements such as rings or saddles, structured packing, or combinations thereof. In one or more embodiments, the one or more separators 150 can be an open column without internals. In one or more embodiments, the one or more separators 150 can be one or more partially empty columns containing one or more internal structures. In one or more embodiments, the one or more separators 150 can operate at a temperature of about 15° C. to about 600° C., about 15° C. to about 500° C., or about 15° C. to about 400° C. In one or more embodiments, the one or more separators 150 can operate at a pressure of about PC,S−700 kPa to about PC,S+2,100 kPa, about PC,S−500 kPa to about PC,S+1,500 kPa, or about PC,S−300 kPa to about PC,S+700 kPa.
In one or more embodiments, at least a portion of the DAO in line 158 can be directed to the one or more strippers 160 and selectively separated therein to provide a recovered solvent via line 162 and DAO (“DAO product”) via line 163. In one or more embodiments, the recovered solvent in line 162 can contain a first portion of the solvent, and the DAO product in line 163 can contain DAO and the balance of the solvent. In one or more embodiments, the recovered solvent in line 162 can have a solvent concentration of from about 70% wt to about 100% wt, about 85% wt to about 99.9% wt, or about 90% wt to about 99.9% wt or more, with the DAO providing the balance. In one or more embodiments, the DAO product in line 163 can have a DAO concentration of from about 20% wt to about 100% wt, about 40% wt to about 97% wt, or about 50% wt to about 95% wt, with the solvent providing the balance. In one or more embodiments, the specific gravity (API density at 15.6° C.) of the DAO product in line 163 can range from about 5° API to about 30° API, about 5° API to about 20° API, or about 5° API to about 15° API.
In one or more embodiments, steam, for example saturated or superheated, can be introduced via line 164 to the stripper 160 to further enhance the separation of the DAO from the solvent. In one or more embodiments, the steam in line 164 can be at a pressure ranging from about 200 kPa to about 2,160 kPa, from about 300 kPa to about 1,475 kPa, or from about 400 kPa to about 1,130 kPa.
The one or more strippers 160 can include one or more systems, devices, or combination of systems and/or devices suitable for separating DAO mixture in line 158 to provide the recovered solvent via line 162 and the DAO product via line 163. In one or more embodiments, the one or more strippers 160 can contain one or more internal structures including, but not limited to bubble trays, packing elements such as rings or saddles, structured packing, or combinations thereof. In one or more embodiments, the one or more strippers 160 can be an open column without internals. In one or more embodiments, the one or more strippers 160 can be one or more partially empty columns containing one or more internal structures. In one or more embodiments, the one or more strippers 160 can operate at a temperature of about 15° C. to about 600° C., about 15° C. to about 500° C., or about 15° C. to about 400° C. In one or more embodiments, the pressure in the one or more strippers 160 can operate close to zero pressure, for example at about 0.1 kPa. In one or more embodiments, the one or more strippers 160 can operate at a pressure ranging from a low of about 30 kPa, about 100 kPa, about 500 kPa, or about 1,000 kPa to a high of about 2,500 kPa, about 3,300 kPa, about 4,000 kPa, or about 4,500 kPa.
In one or more embodiments, at least a portion of the recovered solvent in lines 132 and 162 can be combined to provide a recycled solvent via line 138. Although not shown, at least a portion of the recovered solvent in line 152 can be combined with at least a portion of the recovered solvent in line 132 and/or at least a portion of the recovered solvent in line 162 to provide the recycled solvent in line 138. In one or more embodiments, the recycled solvent in line 138 can be a two phase mixture containing both liquid and vapor. In one or more embodiments, the temperature of the recycled solvent in line 138 can range from about 30° C. to about 600° C., about 100° C. to about 550° C., or about 300° C. to about 500° C.
In one or more embodiments, the recycled solvent in line 138 can be condensed using the one or more condensers 135, to provide a condensed solvent in line 139. In one or more embodiments, the cooled solvent in line 139 can have a temperature ranging from a low of about 10° C., about 20° C., or about 30° C. to a high of about 100° C., about 200° C., about 400° C., or more. The solvent concentration in line 139 can range from a low of about 80% wt, about 85% wt, or about 90% wt to a high of about 95% wt, about 98% wt, about 99% wt, or more.
The one or more condensers 135 can include one or more systems, devices, or combination of systems and/or devices suitable for decreasing the temperature of the recycled solvent in line 138 to provide a condensed solvent via line 139. In one or more embodiments, the condenser 135 can include, but is not limited to liquid or air cooled shell-and-tube, plate and frame, fin-fan, and/or spiral wound cooler designs. In one or more embodiments, a cooling medium such as water, refrigerant, air, or combinations thereof can be used to remove the necessary heat from the recycled solvent in line 138. In one or more embodiments, the one or more condensers 135 can operate at a temperature of about −20° C. to about TC,S° C., about −10° C. to about 300° C., or about 0° C. to about 300° C. In one or more embodiments, the one or more condensers 135 can operate close to zero pressure, for example at about 0.1 kPa. In one or more embodiments, the one or more condensers 135 can operate at a pressure of about 30 kPa to about PC,S+700 kPa, or about 100 kPa to about PC,S+500 kPa, or about 100 kPa to about PC,S+300 kPa.
In one or more embodiments, at least a portion of the condensed solvent in line 139 can be stored in the one or more reservoirs 140. At least a portion of the solvent in the one or more reservoirs 140 can be recycled via line 186 using one or more pumps 192. The recycled solvent in line 186 can be combined with at least a portion of the recovered solvent in line 152 to provide a solvent recycle via line 177. A first portion of the solvent recycle in line 177 can be recycled to the mixer 110 in the two-stage solvent extraction system 100.
A second portion of the solvent in line 177 can be recycled via line 178 to one or more external systems, for example one or more solvent dewatering systems described in detail with reference to
The one or more heat exchangers 175 can include, but is not limited to liquid or air cooled shell-and-tube, plate and frame, fin-fan, or spiral wound cooler designs. In one or more embodiments, the one or more heat exchangers 175 can operate at a temperature of about −20° C. to about TC,S° C., about −10° C. to about 300° C., or about 0° C. to about 300° C. In one or more embodiments, the one or more condensers 175 can operate can operate close to zero pressure, for example at about 0.1 kPa. In one or more embodiments, the one or more condensers 175 can operate at a pressure of about 30 kPa to about PC,S+700 kPa, or about 100 kPa to about PC,S+500 kPa, or about 100 kPa to about PC,S+300 kPa.
In one or more embodiments, the DAO product in line 163 can be introduced to one or more post treatment processes 180 to provide one or more products via line 185. In one or more embodiments, all or a portion of the DAO product in line 163 can be combusted in one or more combustion and/or heat recovery systems 180 to provide heat and/or steam via line 185. In one or more embodiments, the steam produced by combusting the deasphalted oil can be used to provide at least a portion of the thermal energy required in the two-stage separator/solvent extraction system 100, to provide at least a portion of the steam required for stimulation of additional crude hydrocarbons, for example through steam-assisted gravity drainage (“SAGD”) as disclosed in U.S. Pat. Nos. 6,257,334; 5,626,193; 5,318,124; and/or U.S. Patent Publication No.: 2008/0000644, to provide at least a portion of the electrical energy required, for example through the use of one or more steam turbine generators, or any combination thereof.
In one or more embodiments, one or more thermal and/or catalytic post-treatment processes 180 can be used to crack, react, or otherwise convert the DAO product in line 163 to provide one or more finished products via line 185. In one or more embodiments, all or a portion of the DAO product in line 163 can be thermally cracked to provide one or more finished products via line 185. Typical, non-limiting, thermal cracking processes are disclosed in U.S. Pat. Nos. 6,547,956; 6,514,403; 6,303,842 and 6,183,627. In one or more embodiments, all or a portion of the DAO product in line 163 can be reacted with hydrogen using one or more hydrotreaters to provide one or more finished products via line 185. Typical, non-limiting, hydrotreatment and/or hydrocracking processes are disclosed in U.S. Pat. Nos. 7,169,291; 7,094,332; 7,048,845; 6,689,273; 6,315,889; 6,312,586; 6,294,080; 6,294,079; 6,235,190; 6,217,746; 6,113,775; 5,985,132; 5,980,732; 5,904,835; 5,888,377; 5,885,440; 5,565,088; 5,385,663; 5,393,409; 5,244,565; 5,171,727; 5,164,070; 5,120,427; 5,114,562; and 5,098,994; 5,026,472 and U.S. Publication Nos.: 2006/0175229; 2006/0118466; 2004/0168956; and 2004/0031725.
In one or more embodiments, all or a portion of the DAO product in line 163 can be mixed or otherwise combined with one or more catalysts, for example one or more zeolite catalysts, and cracked using one or more fluidized catalytic cracking (“FCC”) systems 180 to provide one or more light hydrocarbon products via line 185. Typical, non-limiting, FCC treatment processes are disclosed in U.S. Pat. Nos. 6,001,162; 5,601,697; 5,135,640; 4,940,529; 4,359,379 and U.S. Publication Nos.: 2007/0034550 and 2006/0042999.
In one or more embodiments, all or a portion of the DAO product in line 163 can be gasified using one or more hydrocarbon gasification systems 180 to provide one or more products, including, but not limited to hydrogen, carbon monoxide, carbon dioxide, mixtures thereof, or any combination thereof via line 185. In one or more embodiments, all or a portion of the DAO product in line 163 can be fractionated using one or more fractionation systems 180 to provide one or more fractionated hydrocarbon products via line 185. In one or more embodiments, all or a portion of the DAO product in line 163 can be selectively separated using one or more visbreaking units 180 to provide one or more products via line 185. In one or more embodiments, all or a portion of the DAO product in line 163 can be desulfurized using one or more desulfurization units 180 to provide one or more low-sulfur and/or ultra low-sulfur products via line 185. In one or more embodiments, all or a portion of the DAO product in line 185 can be hydro-desulfurized using one or more hydro-desulfurization units 180 to provide one or more low-sulfur and/or ultra low-sulfur products via line 185.
In one or more embodiments, the asphaltene product in line 133 can be introduced to one or more post treatment processes 190 to provide one or more finished products via line 195. In one or more embodiments, all or a portion of the asphaltene product in line 133 can be combusted in one or more combustion and/or heat recovery systems 190 to provide heat and/or steam via line 195. In one or more embodiments, the steam can be used to provide at least a portion of the thermal energy required in the two-stage separator/solvent extraction system 100, to provide at least a portion of the steam required for stimulation of additional crude hydrocarbons, for example through SAGD, to provide at least a portion of the electrical energy required, for example through the use of one or more steam turbine generators, or any combination thereof.
In one or more embodiments, all or a portion of the asphaltene product in line 133 can be introduced to one or more treatment processes 190 to provide one or more finished products via line 195. In one or more embodiments, the treatment process 190 can include pelletizing all or a portion of the asphaltenes present in the asphaltene product in line 133. Various pelletization processes are described in U.S. Pat. Nos. 7,101,499; 6,499,979; 6,361,682; 6,331,245; 4,931,231 and 3,847,751. In one or more embodiments, at least a portion of the asphaltene product introduced via line 133 to the treatment process 190 can be used to produce one or more hydrocarbon based catalysts via line 195. Various processes for the production of one or more hydrocarbon catalysts are disclosed in U.S. Pat. Nos. 5,288,681 and 5,171,727. In one or more embodiments, at least a portion of the asphaltene product introduced via line 133 to the treatment process 190 can be used to produce one or more asphalt based building products. A process for the production of asphalt building products is disclosed in U.S. Pat. No. 6,899,839. In one or more embodiments, at least a portion of the asphaltene product introduced to the treatment process 190 can be gasified to produce hydrogen, carbon monoxide, carbon dioxide, or any combination thereof via line 195. A process for the gasification of an asphaltenic hydrocarbon is disclosed in U.S. Pat. No. 6,773,630. In one or more embodiments, at least a portion of the asphaltene product introduced via line 133 to the treatment process 190 can be converted to provide one or more olefinic hydrocarbons via line 195. A process for the conversion of an asphaltenic hydrocarbon to olefinic hydrocarbons is disclosed in U.S. Pat. No. 6,303,842. In one or more embodiments, at least a portion of the asphaltene product introduced via line 133 to the treatment process 190 can be catalytically converted to provide one or more lighter hydrocarbons via line 195 using an FCC. A process for the catalytic conversion of an asphaltenic hydrocarbon to lighter hydrocarbons in an FCC is disclosed in U.S. Pat. No. 5,328,591.
In one or more embodiments, the temperature of the DAO mixture in line 122 can be increased using one or more heat exchangers 145 to provide a heated DAO mixture via line 124. In one or more embodiments, the temperature of the heated DAO mixture in line 124 can be less than the critical temperature (“TC,S”) of the solvent introduced via line 177 to the hydrocarbon. In one or more embodiments, the temperature of the heated DAO mixture in line 124 can be at or above the critical temperature of the solvent introduced via line 177 to the hydrocarbon.
In one or more embodiments, the temperature of the heated DAO mixture in line 124 can be at or above the critical temperature of the solvent using the one or more heaters 145. Increasing the temperature of the heated DAO mixture in line 124 above the critical temperature of the solvent can promote the separation of the DAO mixture into two distinct phases, a L-DAO phase containing essentially L-DAO and a H-DAO phase containing essentially H-DAO. In one or more embodiments, the temperature of the heated DAO in line 124 can range from about 15° C. to about TC,S+150° C., about 15° C. to about TC,S+100° C., or about 15° C. to about TC,S+50° C.
The heated DAO mixture in line 124 can be and introduced to the one or more separators 150 wherein the L-DAO and H-DAO phases can separate to provide a L-DAO phase containing L-DAO and at least a portion of the solvent, and a H-DAO phase containing H-DAO and the balance of the solvent. In one or more embodiments, the L-DAO phase can be recovered from the separator 150 via line 210. In one or more embodiments, the H-DAO phase can be recovered from the separator 150 via line 158.
The L-DAO phase in line 210 can have an L-DAO concentration ranging from a low of about 1% wt, about 5% wt, or about 10% wt to a high of about 30% wt, about 40% wt, about 50% wt, or more. In one or more embodiments, the L-DAO phase in line 210 can have a solvent concentration ranging from a low of about 50% wt, about 60% wt, or about 70% wt to a high of about 90% wt, about 95% wt, or about 99% wt. In one or more embodiments, the L-DAO phase in line 210 can have an H-DAO concentration of about 20% wt or less, about 15% wt or less, about 10% wt or less, about 5% wt or less, about 1% wt or less.
The H-DAO phase in line 158 can have an H-DAO concentration ranging from a low of about 10% wt, about 25% wt, or about 40% wt to a high of about 70% wt, about 80% wt, about 90% wt, or more. The H-DAO phase in line 158 can have a solvent concentration ranging from a low of about 10% wt, about 20% wt, or about 30% wt to a high of about 60% wt, about 75% wt, or about 90% wt. In one or more embodiments, the H-DAO phase in line 158 can have a L-DAO concentration of about 20% wt or less, about 15% wt or less, about 10% wt or less, about 5% wt or less, about 1% wt or less.
The one or more separators 150 can include one or more systems, devices, or combination of systems and/or devices suitable for separating the heated DAO in line 124 to provide a L-DAO phase in line 210 and a H-DAO phase in line 158. In one or more embodiments, the one or more separators 150 can contain one or more internal structures including, but not limited to bubble trays, packing elements such as rings or saddles, structured packing, or combinations thereof. In one or more embodiments, the one or more separators 150 can be an open column without internals. In one or more embodiments, the one or more separators 150 can be one or more partially empty columns containing one or more internal structures. In one or more embodiments, the one or more separators 150 can be a partially or completely open column without internals. In one or more embodiments, the one or more separators 150 can have an operating temperature of from about 15° C. to about TC,S+150° C., about 15° C. to about TC,S+100° C., or about 15° C. to about TC,S+50° C. In one or more embodiments, the one or more separators 150 can have an operating pressure of from about 100 kPa to about PC,S+2,100 kPa, about PC,S−700 kPa to about PC,S+1,500 kPa, or about PC,S−300 kPa to about PC,S+700 kPa.
The H-DAO phase via line 158 can be introduced into the one or more strippers 160 and selectively separated therein to provide a recovered solvent via line 162 and H-DAO (“H-DAO product”) via line 205. In one or more embodiments, steam, for example saturated or superheated, can be introduced via line 164 to the stripper 160 to further enhance the separation of the H-DAO from the solvent. In one or more embodiments, the recovered solvent in line 162 can have a solvent concentration ranging from a low of about 50% wt, about 70% wt, or about 80% wt to a high of about 90% wt, about 95% wt, about 99% wt, or more, with the balance being H-DAO. In one or more embodiments, the H-DAO in line 205 can have an H-DAO concentration ranging from a low of about 20% wt, about 40% wt, or about 50% wt to a high of about 80% wt, about 90% wt, about 95% wt, or more, with the balance being the solvent and/or L-DAO. In one or more embodiments, the H-DAO in line 205 can have a specific gravity (API density@15.6° C.) ranging from a low of about 5°, about 7°, or about 10° to a high of about 20°, about 25°, about 30°, or more.
The one or more strippers 160 can include one or more systems, devices, or combination of systems and/or devices suitable for separating the H-DAO phase in line 158 to provide the recovered solvent via line 162 and the H-DAO via line 205. In one or more embodiments, the one or more strippers 160 can contain one or more internal structures including, but not limited to bubble trays, packing elements such as rings or saddles, structured packing, or combinations thereof. In one or more embodiments, the one or more strippers 160 can be an open column without internals. In one or more embodiments, the one or more strippers 160 can be one or more partially empty columns containing one or more internal structures. In one or more embodiments, the one or more strippers 160 can be a partially or completely open column without internals. In one or more embodiments, the one or more strippers 160 can have an operating temperature of from about 15° C. to about 600° C., about 15° C. to about 500° C., or about 15° C. to about 400° C. In one or more embodiments, the one or more strippers 160 can operate can operate close to zero pressure, for example at about 0.1 kPa. In one or more embodiments, the one or more strippers 160 can have an operating pressure of from about 100 kPa to about 4,000 kPa, about 500 kPa to about 3,300 kPa, or about 1,000 kPa to about 2,500 kPa.
Referring again to the one or more separators 150, in one or more embodiments, the L-DAO phase via line 210 can be heated using one or more heat exchangers (two are shown 215, 225) to provide a heated L-DAO in line 230. In one or more embodiments, the heated L-DAO in line 230 can be at a temperature of from about 15° C. to about TC,S+150° C., about 15° C. to about TC,S+100° C., or about 15° C. to about TC,S+50° C. In one or more embodiments, a recovered solvent in line 272 can be introduced in series or in parallel to the one or more heat exchangers 215, 225 to provide the heated L-DAO in line 230 and a cooled recovered solvent via line 274.
In one or more embodiments, the one or more heat exchangers 215 and 225 can have an operating temperature of from about 15° C. to about TC,S+150° C., about 15° C. to about TC,S+100° C., or about 15° C. to about TC,S+50° C. In one or more embodiments, the one or more heat exchangers 215 and 225 can have an operating pressure of from about 100 kPa to about PC,S+2,100 kPa, about 100 kPa to about PC,S+1,500 kPa, or about 100 kPa to about PC,S+700 kPa.
In one or more embodiments, the heated L-DAO in line 230 can be introduced to the one or more separators 270 and selectively separated therein to provide the recovered solvent via line 272 and L-DAO via line 278. The recovered solvent in line 272 can have a solvent concentration ranging from a low of about 50% wt, about 70% wt, or about 85% wt to a high of about 90% wt, about 95% wt, about 99% wt, or more, with the balance being L-DAO. In one or more embodiments, the L-DAO in line 278 can have an L-DAO concentration ranging from a low of about 20% wt, about 20% wt, or about 40% wt to a high of about 70% wt, about 80% wt, about 90% wt, or more, with the balance being the solvent.
The one or more separators 270 can include one or more systems, devices, or combination of systems and/or devices suitable for separating the heated L-DAO phase in line 230 to provide the recovered solvent via line 272 and the L-DAO via line 278. In one or more embodiments, the separator 270 can include one or more multi-staged extractors having alternate segmental baffle trays, packing, structured packing, perforated trays, and combinations thereof. In one or more embodiments, the separator 270 can be a partially or completely open column without internals. In one or more embodiments, the one or more separators 270 can have an operating temperature of from about 15° C. to about TC,S+150° C., about 15° C. to about TC,S+150° C., or about 15° C. to about TC,S+50° C. In one or more embodiments, the one or more separators 270 can have an operating pressure of from about 100 kPa to about PC,S+700 kPa, about PC,S−700 kPa to about PC,S+700 kPa, or about PC,S−300 kPa to about PC,S+300 kPa.
In one or more embodiments, the L-DAO in line 278 can be introduced to the one or more strippers 280 and selectively separated therein to provide a recovered solvent via line 282 and an L-DAO product via line 288. In one or more embodiments, steam, for example saturated or superheated, can be introduced via line 284 to the stripper 280 to further enhance the separation of the L-DAO from the solvent. In one or more embodiments, the recovered solvent in line 282 can have a solvent concentration ranging from a low of about 50% wt, about 70% wt, or about 85% wt to a high of about 90% wt, about 95% wt, about 99% wt or more, with the balance being L-DAO. In one or more embodiments, the L-DAO product in line 288 can have an L-DAO concentration ranging from a low of about 30% wt, about 40% wt, or about 50% wt to a high of about 85% wt, about 90% wt, about 95% wt, or more, with the balance being the solvent and/or H-DAO. In one or more embodiments, the light deasphalted product in line 288 can have an L-DAO concentration of about 97% wt or more, about 95% wt or more, about 99% wt or more. In one or more embodiments, the L-DAO product in line 288 can have a specific gravity (API density@15.6° C.) ranging from a low of about 10°, about 20°, or about 25° to a high of about 35°, about 45°, about 60°, or more.
The one or more strippers 280 can include one or more systems, devices, or combination of systems and/or devices suitable for separating L-DAO in line 278 to provide the recovered solvent via line 282 and the L-DAO product via line 288. In one or more embodiments, the one or more strippers 280 can contain one or more internal structures including, but not limited to bubble trays, packing elements such as rings or saddles, structured packing, or combinations thereof. In one or more embodiments, the one or more strippers 280 can be an open column without internals. In one or more embodiments, the one or more strippers 280 can be one or more partially empty columns containing one or more internal structures. In one or more embodiments, the one or more strippers 280 can operate at a temperature of about 15° C. to about 600° C., about 15° C. to about 500° C., or about 15° C. to about 400° C. In one or more embodiments, the one or more strippers 280 can operate can operate close to zero pressure, for example at about 0.1 kPa. In one or more embodiments, the one or more strippers 280 can have an operating pressure of from about 30 kPa to about 4,000 kPa, about 500 kPa to about 3,300 kPa, or about 1,000 kPa to about 2,500 kPa.
In one or more embodiments, at least a portion of the solvent in line 132, 162, and/or 282 can be combined to provide a combined solvent in line 138. Although not shown, in or more embodiments at least a portion of the recovered solvent in line 272 can be combined with at least a portion of the recovered solvent in line 132, 162, and/or 282 to provide the combined solvent in line 138. In one or more embodiments, the solvent in line 138 can be present as a two phase liquid/vapor mixture. In one or more embodiments, the combined solvent overhead in line 138 can have a temperature ranging from a low of about 30° C., about 100° C., or about 200° C. to a high of about 400° C., about 500° C., about 600° C., or more.
In one or more embodiments, the combined solvent in line 138 can be partially or completely condensed using one or more condensers 135 to provide a condensed solvent via line 139. In one or more embodiments, the condensed solvent in line 139 can have a temperature ranging from a low of about 10° C., about 20° C., or about 30° C. to a high of about 100° C., about 200° C., about 400° C., or more. In one or more embodiments, the condensed solvent in line 139 can have a solvent concentration ranging from a low of about 80% wt, about 85% wt, or about 90% wt to a high of about 95% wt, about 97% wt, about 99% wt, or more.
The one or more condensers 135 can include one or more systems, devices, or combination of systems and/or devices suitable for decreasing the temperature of the solvent in line 138. In one or more embodiments, condenser 135 can include, but is not limited to liquid or air cooled shell-and-tube, plate and frame, fin-fan, or spiral wound cooler designs. In one or more embodiments, a cooling medium such as water, refrigerant, air, or combinations thereof can be used to remove the necessary heat from the solvent in line 138. In one or more embodiments, the one or more condensers 135 can have an operating temperature of from about −20° C. to about TC,S° C., about −10° C. to about 300° C., or about 0° C. to about 300° C. In one or more embodiments, the one or more condensers 135 can operate can operate close to zero pressure, for example at about 0.1 kPa. In one or more embodiments, the one or more condensers 135 can have an operating pressure of from about 100 kPa to about PC,S+700 kPa, about 100 kPa to about PC,S+500 kPa, or about 100 kPa to about PC,S+300 kPa.
In one or more embodiments the condensed solvent in line 139 can be stored or accumulated in one or more reservoirs 140. In one or more embodiments, the solvent in the reservoir 140 can be transferred using one or more solvent pumps 192 and recycle lines 186. Recycling at least a portion of the solvent to either the solvent deasphalting process 200 can decrease the quantity of fresh solvent make-up required. In one or more embodiments, all or a portion of the solvent in the one or more reservoirs can be transferred via line 135 to one or more systems, for example a solvent dewatering system as discussed in greater detail with respect to
Referring again to the one or more separators 270, in one or more embodiments, at least a portion of the recovered solvent in line 272 can be cooled using one or more heat exchangers 145 and 215 to provide a cooled solvent in line 274. In one or more embodiments, about 1% wt to about 95% wt, about 5% wt to about 55% wt, or about 1% wt to about 25% wt of the solvent in line 272 can be cooled using one or more heat exchangers 215 and 145. In one or more embodiments, the solvent in line 274 can be at a temperature of from about 25° C. to about 400° C., about 50° C. to about 300° C., or about 100° C. to about 250° C. In one or more embodiments, at least a portion of the cooled solvent in line 274 can be combined with at least a portion of the recycled solvent in line 186 for recycle to the one or more mixers 110 via line 177. In one or more embodiments, all or a portion of the solvent in line 177 can be introduced to one or more external systems via line 279.
In one or more embodiments, the L-DAO product in line 288 can be introduced to one or more post treatment processes 270 to provide one or more products via line 275. In one or more embodiments, the H-DAO product in line 205 can be introduced to one or more post treatment processes 250 to provide one or more products via line 255. For clarity, conciseness, and ease of description, the treatment processes 270 will be described below with reference to the L-DAO product in line 288 as the hydrocarbon. It should be understood that any one or more of the post-treatment processes 270 described below can provide an equally effective process for post treatment processing of the H-DAO product in line 205 via post-treatment system 250.
In one or more embodiments, all or a portion of the L-DAO product can be combusted using one or more combustion and/or heat recovery systems 270 to provide heat and/or steam via line 275. In one or more embodiments, the steam produced by combusting the L-DAO product can be used to provide at least a portion of the thermal energy required in the three-stage separator/solvent extraction system 200, to provide at least a portion of the steam required for stimulation of additional crude hydrocarbons, for example through SAGD, to provide at least a portion of the electrical energy required, for example through the use of one or more steam turbine generators, or any combination thereof.
In one or more embodiments, one or more thermal and/or catalytic post-treatment processes 270 can be used to crack, react, or otherwise convert the L-DAO product in line 288 to one or more finished products via line 275. In one or more embodiments, all or a portion of the L-DAO product in line 288 can be thermally cracked to provide one or more finished products via line 275. In one or more embodiments, all or a portion of the L-DAO product in line 288 can be reacted with hydrogen using one or more hydrotreaters to provide one or more finished products via line 275.
In one or more embodiments, all or a portion of the L-DAO product in line 288 can be mixed or otherwise combined with one or more catalysts, for example one or more zeolite catalysts, and cracked using one or more fluidized catalytic cracking systems 270 to provide one or more light hydrocarbon products via line 275. In one or more embodiments, all or a portion of the L-DAO product in line 288 can be gasified using one or more hydrocarbon gasification systems 270 to provide one or more products, including, but not limited to hydrogen, carbon monoxide, carbon dioxide, mixtures thereof, or any combination thereof via line 275. In one or more embodiments, all or a portion of the L-DAO product in line 288 can be fractionated using one or more fractionation systems 270 to provide one or more fractionated hydrocarbon products via line 275. In one or more embodiments, all or a portion of the L-DAO product in line 288 can be selectively separated using one or more visbreaking units 270 to provide one or more products via line 275. In one or more embodiments, all or a portion of the L-DAO product in line 288 can be desulfurized using one or more desulfurization units 270 to provide one or more low-sulfur and/or ultra low-sulfur products via line 275. In one or more embodiments, all or a portion of the L-DAO product in line 288 can be hydro-desulfurized using one or more hydro-desulfurization units 270 to provide one or more low-sulfur and/or ultra low-sulfur products via line 275.
In one or more embodiments, the asphaltene product in line 233 can be introduced to one or more post treatment processes 290 to provide one or more finished products via line 295. In one or more embodiments, all or a portion of the asphaltene product in line 233 can be combusted to provide heat and/or steam. In one or more embodiments, the steam can be used to provide at least a portion of the thermal energy required in the three-stage separator/solvent extraction system 200, to provide at least a portion of the steam required for stimulation of additional crude hydrocarbons, for example through SAGD, to provide at least a portion of the electrical energy required, for example through the use of one or more steam turbine generators, or any combination thereof.
In one or more embodiments, all or a portion of the asphaltene product in line 233 can be introduced to one or more treatment processes 290 to provide one or more finished products via line 295. In one or more embodiments, the treatment process 290 can include pelletizing all or a portion of the asphaltenes present in the asphaltene product in line 233. In one or more embodiments, at least a portion of the asphaltene product introduced via line 233 to the treatment process 290 can be used to produce one or more hydrocarbon based catalysts via line 295. In one or more embodiments, at least a portion of the asphaltene product introduced via line 233 to the treatment process 290 can be used to produce one or more asphalt based building products via line 295. In one or more embodiments, at least a portion of the asphaltene product introduced via line 233 to the treatment process 290 can be gasified to produce hydrogen, carbon monoxide, carbon dioxide, or any combination thereof via line 295. In one or more embodiments, at least a portion of the asphaltene product introduced via line 233 to the treatment process 290 can be converted into one or more olefinic hydrocarbons via line 295. In one or more embodiments, at least a portion of the asphaltene product introduced via line 233 to the treatment process 290 can be catalytically converted into one or more lighter hydrocarbons via line 295 using a fluidized catalytic cracker.
The hydrocarbon in line 305 can be or include, but are not limited to whole crude oil, crude oil, oil shales, oil sands, tars, bitumens, combinations thereof, derivatives thereof, or mixtures thereof. In one or more embodiments, the hydrocarbon in line 305 can include one or more particulate components, such as carbon or coke, ash, clays, inorganic compounds, metals, metal oxides, such as SiO2, Al2O3, and the oxides and oxysulfides of metals such as Fe and Ca. These particulate components may originate from the producing formation as sand or clays or may have been picked up by the high viscosity oil during transportation and processing. Residual oils or oils having prior treatment may also contain residual catalyst fines. Such catalysts typically comprise metals of the group VIA or the group VIII of the Periodic Table supported on a supporter comprising an iron-containing aluminosilicate and inorganic oxides.
The hydrocarbon in line 305 can include one or more inert materials, water, gases, and the like. In one or more embodiments, the hydrocarbon in line 305 can be a mixture containing one or more hydrocarbons having an API specific gravity (API@15.6° C.—ASTM D4052) of about 35° or less, about 30° or less, about 25° or less, or about 20° or less. In one or more embodiments, the hydrocarbon in line 305 can have an API specific gravity (API@15.6° C.—ASTM D4052) of from about 6° to about 25°, about 7° to about 23°, about 8° to about 19°, or about 8° to about 15°. In one or more embodiments, the hydrocarbon in line 305 can be or include one or more hydrocarbons having a normal, atmospheric, boiling point of less than about 1,090° C., less than about 1,000° C., less than about 900° C., less than about 800° C., less than about 700° C., or less.
In one or more embodiments, the hydrocarbon in line 305 can have an asphaltene concentration of about 5% wt or more, about 10% wt or more, about 15% wt or more, about 20% wt or more, about 25% wt or more, or about 30% wt or more. In one or more embodiments, the hydrocarbon in line 305 can include a mixture of inert material and hydrocarbons, for example a tar sand containing bitumen combined with one or more inert materials. In one or more embodiments, the hydrocarbon in line 305 can include about 5% vol to about 25% vol naphthenes, or from about 10% vol to about 20% vol naphthenes, or from about 13% vol to about 18% vol naphthenes. The hydrocarbon in line 305 can include about 5% vol to about 25% vol aromatic hydrocarbons, or from about 10% vol to about 20% vol aromatic hydrocarbons, or from about 13% vol to about 18% vol aromatic hydrocarbons. The hydrocarbon in line 305 can include about 50% vol to about 85% vol paraffins, or from about 60% vol to about 75% vol paraffins, or from about 63% vol to about 70% vol paraffins. The hydrocarbon in line 305 can include from about 25 ppmw to about 400 ppmw or more nickel and from about 200 ppmw to about 1,000 ppmw or more vanadium.
In one or more embodiments, the one or more inert materials can include, but are not limited to sands, clays, silt, mud, or any combination thereof. In one or more embodiments, the concentration of inert materials can range from a low of about 1% wt, about 2% wt, about 5% wt, or about 10% wt to a high of about 35% wt, about 40% wt, about 50% wt, or about 70% wt. In one or more embodiments, the hydrocarbon in line 305 can include one or more tar sands saturated with a relatively heavy, viscous bitumen in quantities ranging from a low of about 1% wt, about 5% wt, or about 10% wt to a high of about 20% wt, about 25% wt, or about 30% wt. The bitumen can have a sulfur content of about 2% wt, about 3% wt, about 4% wt, about 5% wt, or about 6% wt. In one or more embodiments, the bitumen can have an aromatics content of about 20% wt, about 25% wt, about 30% wt, about 35% wt, or about 40% wt.
The contactor 310 can include any system, device, or combination of systems and/or devices suitable for mixing or otherwise combining the solvent introduced via line 303 with the hydrocarbon introduced via line 305. In one or more embodiments, the one or more contactors 310 can contain internals such as rings, saddles, structured packing, balls, irregular sheets, tubes, spirals, trays, baffles, or any combinations thereof. In one or more embodiments, the contactor 310 can be a partially or completely open column without internals. In one or more embodiments, the one or more contactors 310 can include but are not limited to ejectors, inline static mixers, inline mechanical/power mixers, homogenizers, or combinations thereof. In one or more embodiments, the one or more contactors 310 can have an operating temperature of from about 0° C. to about 95° C., about 5° C. to about 80° C., or about 10° C. to about 70° C. In one or more embodiments, the one or more contactors 310 can have an operating pressure of from about 100 kPa to about 1,150 kPa, about 200 kPa to about 1,000 kPa, or about 500 kPa to about 800 kPa.
The mixing or combining of the solvent in line 303 and the hydrocarbon in line 305 permits the separation of water contained in the hydrocarbon to separate, forming a plurality of discrete hydrocarbon and aqueous phases. Any solvent that can differentiate the density of the oil and water to facilitate a phase separation therebetween can be used. Suitable solvents can include, but are not limited to aliphatic hydrocarbons, cycloaliphatic hydrocarbons, and aromatic hydrocarbons, and mixtures thereof. In one or more embodiments, the solvent can include propane, butane, pentane, benzene, or mixtures thereof. In one or more embodiments, the solvent can include at least 90% wt, at least 95% wt, or at least 99% wt of one or more hydrocarbons having a normal boiling point below 538° C. In one or more embodiments, the solvent can include one or more gas condensates having a boiling range of about 27° C. to about 121° C., one or more light naphthas having a boiling range of about 32° C. to about 82° C., one or more heavy naphthas having a boiling range of about 82° C. to about 221° C., or mixtures thereof. In one or more embodiments, the solvent can have a critical temperature of about 90° C. to about 538° C., about 90° C. to about 400° C., or about 90° C. to about 300° C. In one or more embodiments, the solvent can have a critical pressure of about 2,000 kPa to about 6,000 kPa, about 2,300 kPa to about 5,800 kPa, or about 2,600 kPa to about 5,600 kPa.
The solvent and hydrocarbon mixture can be recovered via line 315 from the one or more contactors 310 and can be introduced to the one or more separators 320. The separator 320 can be one or more systems, devices, or combination of systems and/or devices suitable for selectively separating the aqueous and hydrocarbon phases formed by combining the solvent with the hydrocarbon in the contactor 310. For example, the separator 320 can be or include any one or more gravity separators and coalescer-assisted separators. In one or more embodiments, chemical-assisted and/or plate assisted separators can be used. In one or more embodiments, the solvent and hydrocarbon mixture in line 315 can be heated and/or cooled to further differentiate the specific gravity of the hydrocarbon and aqueous phases to improve the overall separation efficiency within the separator 320.
Within the one or more separators 320, the density difference between the hydrocarbon and aqueous phases can permit a phase separation to occur. In one or more embodiments, the phase separation can be gravity based. In one or more embodiments, the phase separation can be mechanically assisted, for example through centrifugal and/or cyclonic separation. Although not shown, the aqueous phase recovered from the separator 320 via line 327 can be further processed and/or treated to remove entrained hydrocarbons and other contaminants prior to recycle, reuse, and/or disposal. The hydrocarbon can be recovered via line 105 from the one or more separators 320. The hydrocarbon in line 105 can be as discussed and described above with reference to
In one or more embodiments, the hydrocarbon in line 105 can be selectively separated within the two-stage separator/solvent extraction system 100 to provide the asphaltene product via line 133 and the DAO product via line 163 as discussed and described above with reference to
In one or more embodiments, the temperature of the hydrocarbon in line 405 can range from a low of about 0° C., about 10° C., about 30° C., about 50° C., or about 75° C. to a high of about 80° C., about 100° C., about 120° C., or about 150° C. In one or more embodiments the pressure of the hydrocarbon in line 305 can range from a low of about 150 kPa, about 300 kPa, about 450 kPa, or about 600 kPa to a high of about 750 kPa, about 900 kPa, about 1,050 kPa, or about 1,200 kPa.
Passage of the hydrocarbon through the one or more heaters 410 can increase the temperature of the hydrocarbon by about 50° C., about 100° C., about 200° C., about 300° C., or more. The heated hydrocarbon can exit the one or more heaters 410 via line 415. In one or more embodiments, the temperature of the heated hydrocarbon in line 415 can range from a low of about 50° C., about 60° C., about 80° C., about 100° C., or about 125° C. to a high of about 380° C., about 400° C., about 420° C., or about 450° C. In one or more embodiments, the heating of the hydrocarbon in the one or more heaters 410 can vaporize at least a portion of one or more light hydrocarbons contained in the hydrocarbon. The vaporization of at least a portion of the one or more light hydrocarbons can increase the pressure of the heated hydrocarbon in line 415. In one or more embodiments, the pressure of the one or more heated hydrocarbon in line 415 can range from a low of about 350 kPa, about 500 kPa, about 650 kPa, or about 800 kPa to a high of about 1,150 kPa, about 1,300 kPa, about 1,450 kPa, or about 1,600 kPa.
The one or more heaters 410 can include any system, device or combination of systems and/or devices suitable for heating a high viscosity, hydrocarbon containing asphaltenes. In one or more embodiments, the one or more heaters 410 can include one or more direct fired heaters. In one or more embodiments, the one or more heaters 410 can include one or more non-contact heaters including, but not limited to one or more plate and frame heat exchangers, one or more spiral wound heat exchangers, one or more shell and tube heat exchangers, or any combination thereof. In one or more embodiments, a hot fluid can be passed through the non-contact heater to warm the crude hydrocarbon therein. Suitable hot fluids can include, but are not limited to heat transfer fluids, such as Radtherm® and Dowtherm® heat transfer fluids, hot process fluids, hot waste fluids, such as furnace effluents or combustion exhausts. In one or more embodiments, the one or more heaters 410 can include one or more contact heaters in which one or more high temperature fluids are mixed or otherwise combined with the hydrocarbon to increase the bulk temperature of the mixture. In one or more embodiments, the one or more heaters 410 can include one or more direct fired heaters, one or more contact heat exchangers, and/or one or more non-contact heat exchangers in any combination and/or frequency.
The heated hydrocarbon in line 415 can flow through the one or more pressure control devices 430 to provide a hydrocarbon in line 435 having a reduced and/or increased pressure. In one or more embodiments, the hydrocarbon in line 435 can be introduced to the one or more separators 450. The one or more separators 450 can be maintained at a pressure less than the pressure of the crude hydrocarbons within line 415. In one or more embodiments, the pressure differential between the pressure within the separators 450 and the pressure within line 415 can be about 150 kPa, about 200 kPa, about 400 kPa, about 800 kPa, or more. In one or more embodiments, the operating pressure of the one or more separators 450 can range from a low of about 50 kPa, about 250 kPa, about 400 kPa, or about 600 kPa to a high of about 750 kPa, about 900 kPa, about 1,050 kPa, or about 1,200 kPa. Introducing the heated hydrocarbon to the reduced pressure environment of the one or more separators 450 the vaporized light hydrocarbon can volatilize and “flash” from the heated hydrocarbon within the separator 450. In one or more embodiments, the flashed light hydrocarbon can be recovered via line 460 from the one or more separators 450. The residual hydrocarbons can be recovered from the one or more separators 450 via line 105.
In one or more embodiments, the vaporized light hydrocarbon recovered via line 460 from the one or more separators 450 can include C1-C20 hydrocarbons. For example, the vaporized light hydrocarbons recovered via line 460 from the one or more separators 450 can include, but are not limited to one or more C1 to C8 alkanes, one or more C1 to C8 alkenes, C1 to C8 alkynes, one or more naphthas, one or more aromatics, mixtures thereof, derivatives thereof, or any combination thereof. The pressure of the vaporized light hydrocarbon in line 460 can range from a low of about 50 kPa, about 100 kPa, about 400 kPa, or about 600 kPa to a high of about 750 kPa, about 900 kPa, about 1,050 kPa, or about 1,200 kPa. In one or more embodiments, the temperature of the vaporized light hydrocarbon in line 460 can range from a low of about 25° C., about 40° C., about 50° C., about 70° C., or about 90° C. to a high of about 200° C., about 250° C., about 300° C., or about 350° C. In one or more embodiments, the vaporized light hydrocarbon in line 460 can be further reacted, converted, fractionated and/or separated into one or more finished products.
In one or more embodiments, the hydrocarbon in line 105 can be selectively separated within the two-stage separator/solvent extraction system 100 to provide the asphaltene product via line 133 and the DAO product via line 163, as discussed and described above with reference to
The pressure of the residual hydrocarbons in line 105 can range from a low of about 150 kPa, about 250 kPa, about 400 kPa, or about 600 kPa to a high of about 750 kPa, about 900 kPa, about 1,050 kPa, or about 1,200 kPa. The temperature of the residual hydrocarbons in line 105 can be lower than the temperature of the hydrocarbon in line 415 due to the evaporative cooling which occurs within the one or more separators 450. In one or more embodiments, the temperature of the residual hydrocarbon in line 105 can range from a low of about 25° C., about 40° C., about 50° C., about 70° C., or about 90° C. to a high of about 200° C., about 250° C., about 300° C., or about 350° C.
The topping tower 510 can separate the hydrocarbon into a naphtha product via line 520 and a residue via line 515. In one or more embodiments, the naphtha product via line 520 can be introduced to a hydrotreater (not shown) to provide a hydrotreated naphtha product. The hydrotreated naphtha product can be introduced to one or more reformers to provide a reformed naphtha product. The reformed naphtha product can be introduced to the one or more Benzene, Toluene, Xylene (“BTX”) units (not shown) to provide a BTX product.
In one or more embodiments, the residue via line 515 can be introduced to the one or more distillation units 530 to provide a distillate or light distillate via line 535, a gas oil or heavy distillate via line 540, and a hydrocarbon via line 105. The hydrocarbon in line 105 can be as discussed and described above with reference to
In one or more embodiments, the one or more distillation units 530 can be designed to process about 100,000 BPSD or more, about 120,000 BPSD or more, about 150,000 BPSD or more, about 175,000 BPSD or more, or about 200,000 BPSD or more or more topped crude. In one or more embodiments, the one or more distillation units 530 can include one or more systems, devices, or combination of systems and/or devices suitable for distilling or separating two or more hydrocarbons or groups of hydrocarbons. In one or more embodiments, the one or more distillation units 530 can include one or more crude preheat exchangers, a furnace, a crude fractionator, and/or a gas oil stripper.
In one or more embodiments, all or a portion of the gas oil or heavy distillate in line 540 can be combined with the DAO provided via line 163 from the one or more two-stage separator/solvent extraction systems 100. In one or more embodiments, all or a portion of the gas oil or heavy distillate in line 540 can be combined with the H-DAO provided via line 205 from the one or more three-stage separator/solvent extraction systems 200. In one or more embodiments, all or a portion of the light distillate in line 535 can be combined with the L-DAO provided via line 288 from the one or more three-stage separator/solvent extraction systems 200.
In one or more embodiments, the hydrocarbon in line 105 can be selectively separated within the two-stage separator/solvent extraction system 100 to provide the asphaltene product via line 133 and the DAO product via line 163, as discussed and described above with reference to
In one or more embodiments, the hydrogen in line 605 can contain a mixture of hydrogen, carbon monoxide, carbon dioxide, or any combination thereof, for example a synthesis gas (syngas') provided from one or more gasifiers. In one or more embodiments, the hydrogen in line 605 can have a hydrogen concentration of about 5% mol or more, about 10% mol or more, about 25% mol or more, about 50% mol or more, about 75% mol or more, about 90% mol or more, about 95% mol or more. In one or more embodiments, the hydrogen in line 605 can have a carbon monoxide concentration of about 5% mol or more, about 10% mol or more, about 25% mol or more, about 50% mol or more, about 75% mol or more, about 90% mol or more, about 95% mol or more. In one or more embodiments, the hydrogen in line 605 can have a carbon dioxide concentration of about 5% mol or more, about 10% mol or more, about 25% mol or more, about 50% mol or more, about 75% mol or more, about 90% mol or more, about 95% mol or more. In one or more embodiments, the hydrogen in line 605 can contain purified hydrogen, having a hydrogen concentration of about 90% mol or more, about 95% mol or more, about 99% mol or more, or about 99.9% mol or more.
In one or more embodiments, the one or more hydrotreaters 610, 630, 650, and 670 can be any suitable hydrotreating system, device, or combination of systems and/or devices. For example, the one or more hydrotreaters 610, 630, 650, and 670 can include, but are not limited to hydrodesulfurization, hydrotreating, hydrocracking, hydrogenation of aromatics, hydroisomerization, hydrodewaxing, metal removal, ammonia removal, and the like. In one or more embodiments, the one or more hydrotreaters 610, 630, 650, and can reduce the sulfur content of the hydrocarbon to provide a de-sulfurized and/or hydrogenated hydrocarbon.
In one or more embodiments, the one or more hydrotreaters 610, 630, 650 and 670 can have an operating temperature of from about 300° C. to about 600° C., about 325° C. to about 535° C., or about 330° C. to about 460° C. In one or more embodiments, the one or more hydrotreaters 610, 630, 650 and 670 can have an operating pressure of from about 1,000 kPa to about 30,000 kPa, about 4,500 kPa to about 27,500 kPa, about 5,000 kPa to about 25,000 kPa, or about 5,520 kPa to about 24,100 kPa. In one or more embodiments, the one or more hydrotreaters 610, 630, 650, and 670 can have a hydrogen circulation rate of from about 1,000 standard cubic feet per barrel (“SCF/B”) to about 18,000 SCF/B, about 1,000 SCF/B to about 15,500 SCF/B, or from about 1,000 SCF/B to about 10,000 SCF/B. In one or more embodiments, the one or more hydrotreaters 610, 630, 650, 670 can have a space velocity of from about 0.05/hr−1 to about 4.00/hr−1, about 0.75/hr−1 to about 3.00/hr−1, or about 0.10/hr−1 to about 2.00/hr−1.
In one or more embodiments, the partially hydrotreated hydrocarbons can be recovered via line 615 from the one or more first-stage hydrotreaters 610. In one or more embodiments, the partially hydrotreated hydrocarbon in line 615 can be introduced to one or more second-stage hydrotreaters 630. The partially hydrotreated hydrocarbons can be recovered via line 635 from the one or more second-stage hydrotreaters 630. In one or more embodiments, the partially treated hydrocarbon in line 635 can be introduced to the one or more third-stage hydrotreaters 650. In one or more embodiments, the partially hydrotreated hydrocarbon can be recovered via line 105 from the one or more third-stage hydrotreaters.
In one or more embodiments, the first-stage hydrotreater 610, second-stage hydrotreater 630, and third-stage hydrotreater 650 can be operated at the same or different conditions. In one or more embodiments, all or a portion of the partially hydrotreated hydrocarbon provided via line 105 from the one or more third-stage hydrotreaters 650 can be introduced to one or more the two-stage separator/solvent extraction systems 100. In one or more embodiments, all or a portion of the partially hydrotreated hydrocarbon provided via line 105 from the one or more third-stage hydrotreaters 650 can be introduced to the one or more three-stage separator/solvent extraction systems 200. The separator/solvent extraction systems 100 and 200 can be as discussed and described above with reference to
In one or more embodiments, all or a portion of the DAO provided via line 163 from the two-stage separator/solvent extraction system 100 can be introduced via line 655 to the fourth-stage hydrotreater 670. In one or more embodiments, all or a portion of the H-DAO provided via line 205 from the three-stage separator/solvent extraction system 200 can be introduced via line 665 to the fourth-stage hydrotreater 670. The hydrotreated hydrocarbons can exit the fourth-stage hydrotreater 670 via line 675.
In one or more embodiments, all or a portion of the residual hydrocarbons in line 720 can provide, via line 730, at least a portion of the hydrocarbons in line 105. In one or more embodiments, all or a portion of the residual hydrocarbons in line 720 can be introduced, via line 725 to one or more flash separation units 770. In one or more embodiments, one or more waste oils via line 735 can be introduced to the one or more flash separation units 770. In one or more embodiments, a high-temperature hydrogen-rich gas via line 740 can be introduced to the one or more flash-separation units 770. In one or more embodiments, the high-temperature hydrogen-rich gas in line 740 can have a temperature of from about 93° C. to about 815° C., about 93° C. to about 760° C., or about 93° C. to about 649° C.
In one or more embodiments, the waste oil can include, but is not limited to hydraulic fluids, heat transfer fluids, used lubricating oil, used cutting oils, used motor oils, used solvents, or any combination thereof. In one or more embodiments, the waste oil in line 735 can contain non-distillable components which include, for example, organometallic compounds, inorganic metallic compounds, finely divided particulate matter and non-distillable carbonaceous compounds.
In one or more embodiments, the residual hydrocarbons in line 720 can have a temperature of from about 93° C. to about 593° C., about 121° C. to about 538° C., or about 149° C. to about 482° C. In one or more embodiments, the volumetric feed ratio of waste oil-to-residual can range from a low of about 1:1, about 2:3 or about 1:3 to a high of about 400:1, about 300:1, or about 200:1.
In one or more embodiments, the flash separation unit 770 can have an operating temperature of from about 50° C. to about 600° C., about 55° C. to about 500° C., or about 65° C. to about 460° C. In one or more embodiments, the flash separation unit 770 can have an operating pressure of from about 101 kPa to about 17,000 kPa, about 101 kPa to about 15,500 kPa, or about 101 kPa to about 13,800 kPa. In one or more embodiments, the flash separation unit 770 can have a hydrogen circulation rate of from about 100 standard cubic meters per cubic meter of waste oil feed (“SCM/m3”) to about 15,000 SCM/m3, about 130 SCM/m3 to about 13,000 SCM/m3, about 170 SCM/m3 to about 10,100 SCM/m3. In one or more embodiments the residence time of the high-temperature hydrogen-rich gas in line 740, the residual hydrocarbons in line 720, and the waste oils in line 735 within the flash separation unit 770 can range from a low of about 0.1 sec, about 1 sec., or about 5 sec., to a high of about 10 sec., about 30 sec., about 50 sec., or more.
The simultaneous introduction of the high-temperature hydrogen-rich gas in line 740, the residual hydrocarbons in line 720, and/or the waste oil in line 735 to the flash separation unit 770 can vaporize at least a portion of the hydrocarbon. In one or more embodiments, all or a portion of the vaporized hydrocarbon via line 775 can be recovered from the flash separation unit 770. In one or more embodiments, all or a portion of the residual hydrocarbon in the flash separation unit 770 can be recovered via line 780. In one or more embodiments, all or a portion of the residual hydrocarbons recovered from the flash separation unit 770 via line 780 can provide at least a portion of the hydrocarbons in line 105.
In one or more embodiments, the hydrocarbon in line 105 can be selectively separated within the two-stage separator/solvent extraction system 100 to provide the asphaltene product via line 133 and the DAO product via line 163, as discussed and described above with reference to
In one or more embodiments, one or more solids introduced to the gasifier 810 via line 875 can include, but are not limited to refractory particulates, such as alumina, alpha alumina, zirconia, titania, hafnia, silica, rare earth modified refractory metal oxides, where the rare earth may be any rare earth metal (e.g. lanthanum or yttrium), alkali earth metal modified refractory oxides, magnesia, a mullite; synthetically prepared or naturally occurring material such as pumice, ash, clay, kieselguhr, diatomaceous earth, bauxite, derivatives thereof, or mixtures thereof.
In one or more embodiments, all or a portion of the one or more solids can be inert. The solids can have a substantially stable surface area at reaction conditions, for example, a surface area that is not substantially reactive at the operating conditions, e.g. temperature and pressure. In one or more embodiments, all or a portion of the one or more solids can be catalytic. In one or more embodiments, the one or more solids in line 875 can have an average particle size of about 40 microns to about 2,000 microns, about 45 microns to about 1,500 microns, or about 50 microns to about 800 microns. In one or more embodiments, the one or more solids can be heated prior to being introduced to the gasifier 810. In one or more embodiments, the one or more solids in line 875 can have a temperature of from about 450° C. to about 700° C., about 500° C. to about 675° C., or about 550° C. to about 650° C.
In one or more embodiments, the hydrocarbon in line 305 can have a residence time in the gasifier 810 of from about 0.1 sec. to about 15 sec., about 0.25 sec. to about 10 sec., or about 0.5 sec. to about 5 sec. In one or more embodiments, the solids in line 875 can have a residence time in the gasifier 810 of from about 5 sec. to about 60 sec., about 7 sec. to about 45 sec., or about 10 sec. to about 30 sec. In one or more embodiments, the residence time of the hydrocarbon within the gasifier 810 and the residence time of the one or more solids in the gasifier 810 can be independently controlled. In one or more embodiments, the solids-to-hydrocarbon weight ratio can range from about 1:1 to about 20:1, about 3:1 to about 15:1, or about 5:1 to about 10:1.
The temperature of the suspension of coke-covered solids and one or more gasified hydrocarbons recovered via line 815 from the gasifier 810 can be reduced to minimize or stop thermal cracking of the hydrocarbons contained therein. In one or more embodiments, the temperature of the suspension in line 815 can be reduced to below about 500° C., about 450° C., or about 350° C. In one or more embodiments the suspension in line 815 can be introduced to the one or more separators 830 to provide a solids-lean vaporized hydrocarbon via line 835 and coke covered solids via line 840. In one or more embodiments, the solids-lean vaporized hydrocarbons in line 835 can have a solids concentration of about 5% wt or less, about 3% wt or less, about 2% wt or less, about 1% wt or less, about 0.75% wt or less, or about 0.5% wt or less.
In one or more embodiments, the solids-lean vaporized hydrocarbons in line 835 can be introduced to one or more fractionators 850 to provide a vaporized overhead fraction via line 855 and a condensed bottom fraction via line 105. In one or more embodiments, the overhead fraction in line 855 can have a normal boiling point of about 460° C. or less, about 480° C. or less, or about 510° C. or less. In one or more embodiments, the bottom fraction in line 105 can have a normal boiling point of about 460° C. or more, about 480° C. or more, or about 510° C. or more. The hydrocarbon in line 105 can be as discussed and described above with reference to
In one or more embodiments, the hydrocarbon in line 105 can be selectively separated within the two-stage separator/solvent extraction system 100 to provide the asphaltene product via line 133 and the DAO product via line 163, as discussed and described above with reference to
In one or more embodiments, the hydrocarbon in line 305 can be as discussed and described above with reference to
In one or more embodiments, after fluidizing, dissolving, and/or solubilizing all or a portion of the hydrocarbons in the hydrocarbon storage unit 910, the hydrocarbon mixture can be withdrawn from the hydrocarbon storage unit 910 via line 915. The hydrocarbon mixture in line 915 can include, but is not limited to all or a portion of the elevated temperature hydrocarbons introduced via line 905, all or a portion of the fluidized, dissolved, and/or solubilized hydrocarbons from the hydrocarbon storage unit 910, one or more insoluble particulates the hydrocarbon storage unit 910, or any combination thereof. In one or more embodiments, the hydrocarbon mixture in line 915 can have a temperature of from about 30° C. to about 250° C., about 40° C. to about 200° C., or about 50° C. to about 150° C.
In one or more embodiments, the hydrocarbon mixture in line 915 can be introduced to the one or more separators 950 to provide a hydrocarbon mixture via line 105 and a solids slurry via line 955. In one or more embodiments, the solids slurry in line 955 can have a minimum solids concentration of about 5% wt, about 10% wt, about 25% wt, or about 50% wt. The one or more separators 950 can be maintained at or above a minimum temperature to promote the separation of the hydrocarbon mixture into two or more phases. In one or more embodiments, the one or more separators can be maintained at a minimum temperature of about 50° C., about 60° C., about 70° C., or about 75° C. In one or more embodiments, the separation of the hydrocarbon mixture within the one or more separators can be a batch process where the hydrocarbon mixture in line 915 is introduced to the one or more separators 950 and allowed to settle for an extended period of time. In one or more embodiments, the settling time within the one or more separators can be a minimum of about 6 hours, about 8 hours, about 10 hours or about 12 hours.
In one or more embodiments, the inorganic components and other insoluble components can be recovered via line 955 and treated, disposed of, or further processed. In one or more embodiments, the hydrocarbon in line 105 can be as discussed and described above with reference to
The one or more distillation units 1010 can include one or more distillation units operating at atmospheric and/or sub-atmospheric pressures. In one or more embodiments, the one or more distillation unit 1010 can provide an overhead vapor containing one or more light hydrocarbons via line 1015. In one or more embodiments, the distillation unit 1010 can provide one or more fractionated products, for example one or more heavy gas oils via line 1040, one or more light gas oils via line 1035, one or more naphthas via line 1030 and one or more light ends via line 1015. In one or more embodiments, the residual, high boiling point hydrocarbons can exit the distillation unit 1010 via line 105, which can be as discussed and described above with reference to
In one or more embodiments, the hydrocarbon in line 105 can be selectively separated within the two-stage separator/solvent extraction system 100 to provide the asphaltene product via line 133 and the DAO product via line 163, as discussed and described above with reference to
In one or more embodiments, all or a portion of the asphaltenes exiting the one or more separator/solvent extraction systems 100 and/or 200 via lines 133 and/or 233, respectively, can be combined to provide an asphaltene feed via line 1050. In one or more embodiments, the asphaltenes in line 1050 can be introduced to one or more gasifiers and gasified therein to provide one or more products including, but not limited to hydrogen, carbon monoxide, carbon dioxide, or any combination thereof.
In one or more embodiments, all or a portion of the DAO recovered via line 163 from the separator/solvent extraction system 100, and/or all or a portion of the H-DAO recovered via line 205 from the separator/solvent extraction system 200 can be combined to provide a combined DAO in line 1060. In one or more embodiments, all or a portion of the combined DAO in line 1060 can be introduced to one or more upgraders, for example one or more cracking units (not shown).
In one or more embodiments, the hydrogen in line 1105 can contain a mixture of hydrogen, carbon monoxide, carbon dioxide, or any combination thereof, for example a syngas provided from one or more gasifiers. In one or more embodiments, the hydrogen in line 1105 can have a hydrogen concentration of about 5% mol or more, about 10% mol or more, about 25% mol or more, about 50% mol or more, about 75% mol or more, about 90% mol or more, about 95% mol or more. In one or more embodiments, the hydrogen in line 1105 can have a carbon monoxide concentration of about 5% mol or more, about 10% mol or more, about 25% mol or more, about 50% mol or more, about 75% mol or more, about 90% mol or more, about 95% mol or more. In one or more embodiments, the hydrogen in line 1105 can have a carbon dioxide concentration of about 5% mol or more, about 10% mol or more, about 25% mol or more, about 50% mol or more, about 75% mol or more, about 90% mol or more, about 95% mol or more. In one or more embodiments, the hydrogen in line 1105 can contain purified hydrogen, having a hydrogen concentration of about 90% mol or more, about 95% mol or more, about 99% mol or more, or about 99.9% mol or more.
Within the hydrogenation unit 1110, the hydrogen introduced via line 1105 can contact the liquid hydrocarbons introduced via line 305 to provide one or more vaporized hydrocarbons via line 1120 and one or more residual hydrocarbons via line 105. The residence time within the hydrogenation unit can range from a low of about 30 seconds, about 60 seconds, about 90 seconds, or about 120 seconds, to a high of about 2 minutes, about 3 minutes, about 5 minutes, or about 10 minutes. In one or more embodiments, the weight ratio of the hydrogen gas flow to the hydrocarbon flow can range from a low of about 0.1:1, about 0.5:1, or about 1:1 to a high of about 2:1, about 3:1, about 5:1, or about 10:1.
In one or more embodiments, the hydrocarbon in line 305 can be introduced to the hydrogenation system at an elevated temperature. In one or more embodiments, the temperature of the hydrocarbon in line 305 can range from a low of about 20° C., about 75° C., about 150° C., or about 200° C. to a high of about 450° C., about 500° C., about 550° C., or about 600° C.
In one or more embodiments, the hydrocarbon in line 105 can be selectively separated within the two-stage separator/solvent extraction system 100 to provide the asphaltene product via line 133 and the DAO product via line 163, as discussed and described above with reference to
In one or more embodiments, a hydrocarbon via line 305 and hydrogen via line 1205 can be introduced to the one or more visbreakers 1210. In one or more embodiments, the hydrocarbon in line 305 can be as discussed and described above with reference to
In one or more embodiments, the hydrogen in line 1205 can contain a mixture of hydrogen, carbon monoxide, carbon dioxide, or any combination thereof, for example a syngas provided from one or more gasifiers. In one or more embodiments, the hydrogen in line 1205 can have a hydrogen concentration of about 5% mol or more, about 10% mol or more, about 25% mol or more, about 50% mol or more, about 75% mol or more, about 90% mol or more, about 95% mol or more. In one or more embodiments, the hydrogen in line 605 can have a carbon monoxide concentration of about 5% mol or more, about 10% mol or more, about 25% mol or more, about 50% mol or more, about 75% mol or more, about 90% mol or more, about 95% mol or more. In one or more embodiments, the hydrogen in line 1205 can have a carbon dioxide concentration of about 5% mol or more, about 10% mol or more, about 25% mol or more, about 50% mol or more, about 75% mol or more, about 90% mol or more, about 95% mol or more. In one or more embodiments, the hydrogen in line 1205 can contain purified hydrogen, having a hydrogen concentration of about 90% mol or more, about 95% mol or more, about 99% mol or more, or about 99.9% mol or more.
In one or more embodiments, the hydrogen in line 1205 can have a pressure of from about 650 kPa, to about 10,000 kPa, about 1,000 kPa to about 7,000 kPa, or about 1,400 kPa to about 5,500 kPa. The severity in visbreakers can be measured in “equivalent seconds” at some reference temperature, for example 90 seconds at 469° C. In one or more embodiments, the cracking severity within the one or more visbreakers 1210 (at about 469° C.) can be about 30 equivalent seconds to about 120 equivalent seconds, about 40 equivalent seconds to about 105 equivalent seconds, or about 60 equivalent seconds to about 90 equivalent seconds.
The cracked hydrocarbons recovered via line 1215 from the one or more visbreakers 1210 can be introduced to the one or more heat exchangers 1230. Within the one or more heat exchangers 1230, the temperature of the cracked hydrocarbons can be reduced to provide a cooled hydrocarbon via line 1235. In one or more embodiments, the cooled hydrocarbon in line 1235 can have a temperature of from about 170° C. to about 250° C., about 180° C. to about 240° C., or about 190° C. to about 230° C.
In one or more embodiments, at least a portion of the cooled hydrocarbons in line 1235 can be introduced to one or more separators 1250 wherein at least a portion of the lighter hydrocarbons can vaporize or flash, to provide one or more vaporized hydrocarbons via line 1255 and one or more non-vaporized hydrocarbons via line 105. In one or more embodiments, the hydrocarbon in line 105 can be similar to the hydrocarbon in line 105 discussed and described above with reference to
In one or more embodiments, the hydrocarbon in line 105 can be selectively separated within the two-stage separator/solvent extraction system 100 to provide the asphaltene product via line 133 and the DAO product via line 163, as discussed and described above with reference to
In one or more embodiments, the hydrocarbon in line 305 and solvent in line 1305 can be mixed or otherwise combined using the mixer 1310 to provide a mixture. In one or more embodiments, the hydrocarbon in line 305 can be as discussed and described above with reference to
The mixture in line 1315 can be introduced to one or more heaters 1330 to provide a heated mixture via line 1335. The temperature of the heated mixture in line 1335 can range from a low of about 35° C., about 40° C., about 45° C., or about 50° C. to a high of about 80° C., about 85° C., about 90° C., or about 95° C. Heating the mixture above about 40° C. can promote the separation of the mixture into two or more phases.
The heated mixture in line 1335 can be introduced to the one or more separators 1350. Within the one or more separators 1350, the mixture can separate into two or more phases, with hydrocarbons collecting on the top of an upper phase and within the interface region between the upper phase and a lower phase. In one or more embodiments, the upper phase can have a butoxy-ethanol concentration of about 50% wt or more, about 55% wt or more, about 60% wt or more, about 65% wt or more, about 70% wt or more with the balance water. In one or more embodiments, the lower phase can have a butoxy-ethanol concentration of less than about 20% wt, about 15% wt, about 10% wt, about 5% wt with the balance water.
The surface and interface hydrocarbons can be withdrawn from the separator via line 105. The butoxy-ethanol rich upper layer can be withdrawn via line 1355. In one or more embodiments, all or a portion of the butoxy-ethanol rich upper layer in line 1355 can be withdrawn from the separator 1350 and recycled for reuse or recovery. The water-rich lower layer can be withdrawn from the separator 1350 via line 1360. In one or more embodiments, the water-rich lower layer can be treated prior to disposal or recycle.
In one or more embodiments, the hydrocarbon via line 105, which can be as discussed and described above with reference to
In one or more embodiments a hydrocarbon via line 305 and solvent via line 1405 can be mixed or otherwise combined using the one or more mixers 1410. The hydrocarbon in line 305 can be as discussed and described above with reference to
In one or more embodiments, mixing of the solvent with the hydrocarbon within the one or more mixers 1410 can sufficiently reduce the viscosity of the hydrocarbon to permit the selective separation of the solids present in the hydrocarbon. The mixture can exit the one or more mixers 1410 via line 1420. In one or more embodiments, the solvent/hydrocarbon mixture in line 1420 can have a temperature of from about 50° C. to about 370° C., about 55° C. to about 300° C., or about 60° C. to about 200° C.
In one or more embodiments, the mixture in line 1420 can be introduced to one or more separation units 1430. Within the one or more separation units 1430, all or a portion of the solids present in the mixture can be selectively separated. A slurry containing the recovered solids can be withdrawn from the separation unit 1430 via line 1435, while the mixture can be withdrawn via line 105. In one or more embodiments, the solids recovered from the hydrocarbon can include, but are not limited to silica, alumina, iron, clays, suspended catalyst fines, entrained catalyst fines, or any combination thereof. In one or more embodiments, the filter can remove solids of about 25 microns and larger, about 50 microns and larger, about 100 microns and larger, about 200 microns and larger, about 400 microns and larger, about 800 microns and larger, or about 1,000 microns and larger.
In one or more embodiments, the mixture can contain less than about 50% wt solids, less than about 30% wt solids, less than about 20% wt solids, less than about 10% wt solids, less than about 5% wt solids, less than about 3% wt solids, or less than about 1% wt solids.
In one or more embodiments, the one or more separation units 1430 can be any system, device, or any combination of systems and/or devices suitable for separating at least a portion of the solids from the mixture. In one or more embodiments, the one or more separation units 1430 can include a filter, a gravity separator, a centrifuge, a cyclone, or combinations thereof. In one or more embodiments, the one or more separation units 1430 can include a ceramic filter that can be similar to the filter described in U.S. Pat. No. 5,785,860. In one or more embodiments, the solids can be separated by other suitable methods in lieu of the filter 1430 or in addition to the filter 1430. Another method may be an electrodynamic method in which a strong electric field is imposed to collect solids, as described in U.S. Pat. No. 5,843,301. Another method can include a magnetic method in which a strong magnetic field is imposed to collect solids, as described in U.S. Pat. No. 5,607,575.
In one or more embodiments, the hydrocarbon in line 105 can be selectively separated within the two-stage separator/solvent extraction system 100 to provide the asphaltene product via line 133 and the DAO product via line 163, as discussed and described above with reference to
In one or more embodiments, the hydrocarbon in line 305 and an additive via line 1515 can be introduced to one or more mixers 1510. In one or more embodiments, the hydrocarbon in line 305 can be as discussed and described above with reference to
When mixed or otherwise combined with the hydrocarbon in the mixer 1510, the additive can combine with the metals present in the hydrocarbon in line 305, including, but not limited to organo-metallic compounds, such as organo-nickel, organo-vanadium, organo-iron, heteroatoms, derivatives thereof, or any combination thereof. The metal-complexing additive can combine with all or a portion of the metals present in the hydrocarbon in line 305, forming one or more insoluble organo-metallic complexes.
In one or more embodiments, a hydrocarbon mixture that can include the insoluble organo-metallic complexes can be recovered via line 105 from the mixer 1510. In one or more embodiments, the hydrocarbon in line 105 can be selectively separated within the two-stage separator/solvent extraction system 100 to provide the asphaltene product via line 133 and the DAO product via line 163, as discussed and described above with reference to
In one or more embodiments, the diluent introduced via line 1605 can include a solvent, including, but not limited to light naphthas, heavy naphthas, whole naphthas, paraffinic hydrocarbons, alkane hydrocarbons, mixtures thereof, derivatives thereof, or any combination thereof. In one or more embodiments, the hydrocarbon in line 305 can be mixed or otherwise combined with the solvent in line 1605 and, optionally, one or more recycled hydrocarbons via line 1655 to provide a diluted hydrocarbon in line 1607. The addition of the solvent to the hydrocarbon can reduce the viscosity of the hydrocarbon, permitting the settling of any solids present in the hydrocarbon.
The diluted hydrocarbon in line 1607 can be introduced to one or more primary separators 1610 where at least a portion of any solids present in the hydrocarbon can settle. The settled solids can be recovered via line 1615 from the primary separator 1610. The hydrocarbons can be recovered via line 105 from the primary separator 1610. In one or more embodiments, the settled solids in line 1615 can have a solids concentration of about 10% wt or more, about 20% wt or more, about 30% wt or more, about 40% wt or more, about 50% wt or more.
In one or more embodiments, the solids in line 1615 can be introduced to the one or more secondary separators 1650 to provide further separate additional hydrocarbons from the solids. In one or more embodiments, the one or more secondary separators 1650 can include one or more centrifugal separators, for example one or more cyclones. The solids can be recovered via line 1660 from the secondary separator 1650. The separated hydrocarbons can be recovered via line 1655 from the secondary separator 1650. In one or more embodiments, the solids in line 1660 can have a solids concentration of about 10% wt or more, about 20% wt or more, about 30% wt or more, about 40% wt or more, about 50% wt or more. In one or more embodiments, the recovered hydrocarbons in line 1655 can have a solids concentration of about 20% wt or less, about 15% wt or less, about 10% wt or less, about 5% wt or less, about 3% wt or less, about 1% wt or less, about 0.5% wt or less.
In one or more embodiments, at least a portion of the recovered hydrocarbons can be recycled via line 1655 to the hydrocarbon in line 305. In one or more embodiments, at least a portion of the recovered hydrocarbons via line 1655 can be introduced to the separated hydrocarbons in line 105.
In one or more embodiments, the hydrocarbon in line 105 can be selectively separated within the two-stage separator/solvent extraction system 100 to provide the asphaltene product via line 133 and the DAO product via line 163, as discussed and described above with reference to
The ERA can include one or more metal oxides suspended in a hydrocarbon carrier. In one or more embodiments, the one or more metal oxides can include one or more transition metal oxides, including but not limited to zinc oxide, copper oxide, iron oxide, aluminum oxide, or any combination thereof. In one or more embodiments, the ERA can be in the form of a powder, flake or granule. In one or more embodiments, the ERA can be dispersed, suspended, emulsified, or otherwise mixed in a diluent hydrocarbon having a flash point less than the flash point of the hydrocarbon in line 305, for example mineral oil, Sunpave 125, Hydrolene, light flux oils or the like. Where the diluent hydrocarbon has a flash point less than the hydrocarbon in line 305, the ERA concentration in the diluent hydrocarbon can be about 5% wt or more, about 10% wt or more, about 15% wt or more, about 20% wt or more, about 25% wt or more, about 30% wt or more, 50% wt or more, or about 60% wt or more.
In one or more embodiments, one or more additives, in addition to the ERA, such as sulfonating agents and/or crosslinking agents can be introduced via line 1705. The cross-linking agents can be activators, e.g., zinc oxide, accelerators, such as sulfur compounds, e.g., mercaptobenzothizole (MBT) or both accelerators and activators, such as a zinc salt of MBT, for example. In one embodiment, the cross-linking agent can be a metal oxide. Although the metal oxide can be the same or a different metal oxide than the ERA, such cross-linking metal oxide can be added in addition to the metal oxide ERA, when used. In another embodiment, the cross-linking agent can be a sulfur containing compound. The additives can further include unsaturated functional monomers, unsaturated carboxylic acids, unsaturated dicarboxylic acids, unsaturated anhydrides, unsaturated esters and/or unsaturated amides, for example.
The ERA/diluent hydrocarbon solution and/or one or more additional additives in line 1750 and the hydrocarbon in line 305 can be mixed or otherwise combined to provide one or more reduced emissions hydrocarbons via line 105. In one or more embodiments, the reduced emissions hydrocarbons in line 105 can have an ERA concentration of from about 0.05% wt to about 2% wt, about 0.07% wt to about 1% wt, or about 0.05% wt to about 0.09% wt, or about 0.1% wt to about 0.2% wt. In one or more embodiments, the one or more mixers 1710 can have an operating temperature of from about 100° C. to about 300° C., about 150° C. to about 250° C., or about 175° C. to about 225° C.
In one or more embodiments, the hydrocarbon in line 105 can be selectively separated within the two-stage separator/solvent extraction system 100 to provide the asphaltene product via line 133 and the DAO product via line 163, as discussed and described above with reference to
In one or more embodiments, a hydrocarbon in line 305, which can be as discussed and described above with reference to
The heated hydrocarbon in line 1815 can be introduced to one or more atmospheric distillation units 1830, where at least a portion of the hydrocarbons can vaporize to provide a vaporized hydrocarbon mixture via line 1840. In one or more embodiments, the vaporized hydrocarbon mixture in line 1840 can be selectively separated or otherwise fractionated to provide one or more finished hydrocarbon products including, but not limited to light naphthas, full-range naphthas, C6 and lighter alkanes, or any combination thereof. In one or more embodiments, non-vaporized, residual hydrocarbons can be recovered via line 1835 from the one or more ADUs 1830. In one or more embodiments the operating pressure of the one or more ADUs 1830 can range from a low of about 100 kPa, about 150 kPa, about 200 kPa, or about 250 kPa, to a high of about 300 kPa, about 350 kPa, about 400 kPa, or about 450 kPa.
In one or more embodiments the temperature of the residual hydrocarbons in line 1835 can be increased using the one or more heat exchangers 1850 to provide heated residual hydrocarbons via line 1855. In one or more embodiments, the temperature of the heated residual hydrocarbons in line 1855 can be about 100° C. or more, about 150° C. or more, about 200° C. or more, about 300° C. or more, or about 400° C. or more.
In one or more embodiments, the heated residual hydrocarbons via line 1855 can be introduced to one or more VDUs 1870 where at least a portion of the hydrocarbons can vaporize to provide a vaporized hydrocarbon mixture via line 1880. In one or more embodiments, non-vaporized, residual hydrocarbons (“resid”) can be recovered via line 105 from the one or more VDUs 1870. In one or more embodiments the operating pressure of the one or more VDU 1870 can range from a low of about 0 kPa, about 10 kPa, about 20 kPa, or about 25 kPa, to a high of about 80 kPa, about 85 kPa, about 90 kPa, or about 95 kPa.
In one or more embodiments, the hydrocarbon in line 105 can be selectively separated within the two-stage separator/solvent extraction system 100 to provide the asphaltene product via line 133 and the DAO product via line 163, as discussed and described above with reference to
In one or more embodiments, a hydrocarbon in line 305, which can be as discussed and described above with reference to
In one or more embodiments, the hydrocarbon feed in line 305 can contain one or more hydrophobic asphaltenic hydrocarbons. To reduce the wetting tendency of the hydrophobic asphaltenes in the hydrocarbon in line 305, a solution containing one or more hydrophilic asphaltenic hydrocarbons in line 1905 can be mixed or otherwise combined with the hydrocarbon in line 305 to provide an asphaltenic hydrocarbon mixture having reduced wetting tendencies via line 105.
In one or more embodiments, the hydrocarbon in line 105 can be selectively separated within the two-stage separator/solvent extraction system 100 to provide the asphaltene product via line 133 and the DAO product via line 163, as discussed and described above with reference to
In one or more embodiments, a hydrocarbon in line 305, which can be as discussed and described above with reference to
In one or more embodiments, all or a portion of the vaporized hydrocarbons in line 2035 can be heated using the one or more heat exchangers 2050 to provide a heated vaporized hydrocarbon in line 2055. In one or more embodiments, the temperature of the vaporized hydrocarbons in line 2055 can be about 100° C. or more, about 150° C. or more, about 200° C. or more, about 300° C. or more, or about 400° C. or more.
In one or more embodiments, all or a portion of the heated hydrocarbon in line 2055 and hydrogen via line 2065 can be introduced to the one or more hydrorefiners 2070. The hydrogen introduced via line 2065 to the one or more hydrorefiners 2070 can have a hydrogen concentration of about 40% wt or more, about 50% wt or more, about 60% wt or more, about 70% wt or more, about 80% wt or more, about 90% wt or more, about 95% wt or more, about 99% wt or more.
In one or more embodiments, the hydrogen in line 2065 can contain a mixture of hydrogen, carbon monoxide, carbon dioxide, or any combination thereof, for example a syngas provided from one or more gasifiers. In one or more embodiments, the hydrogen in line 2065 can have a hydrogen concentration of about 5% mol or more, about 10% mol or more, about 25% mol or more, about 50% mol or more, about 75% mol or more, about 90% mol or more, about 95% mol or more. In one or more embodiments, the hydrogen in line 2065 can have a carbon monoxide concentration of about 5% mol or more, about 10% mol or more, about 25% mol or more, about 50% mol or more, about 75% mol or more, about 90% mol or more, about 95% mol or more. In one or more embodiments, the hydrogen in line 605 can have a carbon dioxide concentration of about 5% mol or more, about 10% mol or more, about 25% mol or more, about 50% mol or more, about 75% mol or more, about 90% mol or more, about 95% mol or more. In one or more embodiments, the hydrogen in line 2065 can contain purified hydrogen, having a hydrogen concentration of about 90% mol or more, about 95% mol or more, about 99% mol or more, or about 99.9% mol or more.
The one or more hydrorefiners 2070 can include one or more catalysts suitable for hydrogenating unsaturated hydrocarbons. In one or more embodiments, the one or more hydrorefiners 2070 can use one or more fixed catalyst beds, one or more moving catalyst beds, or any combination thereof. In one or more embodiments, a hydrotreated hydrocarbon via line 2075 can be recovered from the one or more hydrorefiners 2070.
In one or more embodiments, the hydrocarbon in line 105 can be selectively separated within the two-stage separator/solvent extraction system 100 to provide the asphaltene product via line 133 and the DAO product via line 163, as discussed and described above with reference to
Referring to
In one or more embodiments, the coke provided from the one or more cokers can be fuel grade coke and/or anode grade coke. As used herein, the term “anode grade coke” is petroleum coke which has a sulfur content of less than 3% wt, a total metals content of less than 500 ppm, a nickel content of less than 200 ppm, a vanadium content less than 350 ppm, a bulk density of at least 800.9 kg/m3, a Hardgrove grindability index (“HGI”) greater than 70, and a volatile carbonaceous matter (“VCM”) content of less than 10-12% wt. Fuel grade coke is coke which does not meet one or more of the specifications required for anode grade coke.
In one or more embodiments, a portion of the hydrocarbon in line 105, the H-DAO product in line 205, and/or the DAO product in line 163 can be hydrotreated in a hydrotreater to provide a hydrotreated hydrocarbon and lighter hydrocarbon products. In one or more embodiments, at least a portion of the hydrotreated hydrocarbon can be introduced to the coker. In one or more embodiments, at least a portion of the hydrocarbon in line 105 can be hydrotreated in a hydrotreater before introducing the hydrocarbon to the two-state separator/solvent extraction system 100 and/or the three-stage separator/solvent extraction system 200. In one or more embodiments, at least a portion of the hydrocarbon in line 105 can be hydrotreated in a hydrotreater to provide a hydrotreated hydrocarbon which can then be introduced directly to the one or more delayed cokers.
In one or more embodiments, the one or more delayed cokers can include one or more systems, devices, or combination of systems and/or devices suitable for providing anode coke, fuel coke, or both. The one or more delayed cokers can be heated to a temperature ranging from about 425° C. to about 485° C. and can operate at a pressure ranging from about 100 kPa to about 225 kPa. In one or more embodiments, the hydrotreater can be operated at a temperature ranging from about 310° C. to about 375° C. and a pressure ranging from about 4,000 kPa to about 5,600 kPa. Typical, non-limiting, processes integrating solvent deasphalting, hydrotreating, and coking are disclosed in U.S. Pat. Nos. 4,940,529; 5,013,427; 5,124,027; 5,228,978; 5,242,578; 5,258,117; 5,312,543; and 6,332,975.
Certain embodiments and features have been described using a set of numerical upper limits and a set of numerical lower limits. It should be appreciated that ranges from any lower limit to any upper limit are contemplated unless otherwise indicated. Certain lower limits, upper limits and ranges appear in one or more claims below. All numerical values are “about” or “approximately” the indicated value, and take into account experimental error and variations that would be expected by a person having ordinary skill in the art.
Various terms have been defined above. To the extent a term used in a claim is not defined above, it should be given the broadest definition persons in the pertinent art have given that term as reflected in at least one printed publication or issued patent. Furthermore, all patents, test procedures, and other documents cited in this application are fully incorporated by reference to the extent such disclosure is not inconsistent with this application and for all jurisdictions in which such incorporation is permitted.
While the foregoing is directed to embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.
