Not Applicable
Not Applicable
Not Applicable
This invention relates generally to the field of the manufacture of hydrocarbon fuels and more specifically to a composition of matter comprising of the creation of a low molecular weight hydrocarbon fluid exhibiting mainly oligomerized pentenes mainly comprised of 2-Methyl-2-Butene subunits as well as related plant isoprenoids composed of other isoprene derived 2-Methyl-1-Butene subunits and other hydrocarbons from Euphorbia tirucalli biomass and a process for the extraction and refinement in making the same composition through the creation of solvent permeable batting mat and a multi-phase solvent extraction methodology.
Hydrocarbons are the source of many fuel and chemical feedstocks used for industry and commerce in the world. Petroleum is the predominant source of these hydrocarbons. This petroleum is sourced from geological deposits located beneath the earth. These hydrocarbons are then refined and reformed and used as source chemicals for fuels and feedstocks. Traditionally these hydrocarbons are sourced from geological resources. However, hydrocarbons can be found in most living organisms. As hydrocarbons are produced by living organisms, these organisms can be cultivated and processed for use as source hydrocarbons. The ideal organisms for use as petroleum substitutes use the power of the Sun to fully reduce carbon dioxide into source hydrocarbons.
Higher plants produce hydrocarbon compounds composed primarily of isoprenoids. These are often in the form of terpenes made from pentene subunits. Most plants produce these isoprenoid terpenes in small amounts and utilize them to form more complex biochemicals. But some plants produce terpenes as a major metabolic product that can form a plurality of total dry biomass. A prominent example is Euphorbia tirucalli. The biochemicals in this species are very low in molecular weight and are mainly hydrocarbon. Plants that isolate and concentrate large amounts of hydrocarbons can be found often in the Pinaceae, Myrtaceae, Styraceae and Euphorbiaceae families. These are more commonly known as the pine, myrtle, styrax and spurge families. Pines from antiquity to early modern times had their hydrocarbons used as tar for naval stores, or terpentine for cleaning solvents. Myrtles and styraxes generally yield more oxygenated and pleasant smelling hydrocarbons that are used in cough drops and vapor rubs containing Eucalyptus. Spurges are so named because their hydrocarbon products are often poisonous and cause the body to purge itself of “toxins” that were thought to cause disease before the discovery of bacteria. Euphorbia tirucalli itself is sometimes utilized as an herbal remedy in it's native ranges of Africa and the subject of modern cancer research.
Some members of the family Euphorbiaceae, Pinaceae, and Myrtlaceae in particular have very high levels of hydrocarbon present within tissues. Higher plants, such as Euphorbia tirucalli, produce hydrocarbons primarily from isoprene derived pentenes, 2-Methyl-2-Butene, and 2-Methyl-1-Butene. These pentenes are then constructed via cellular metabolism into other chemicals such as hormones, energy stores, or defense chemicals. Another unique isoprene derived class of molecules are rubbers. Rubbers are diene polymers composed of long poly-isoprene chains and can have a wide range of molecular weights depending on the number of isoprene monomers. Euphorbia tirucalli has a relatively low molecular weight group of oligomerized pentene metabolites, made of a few monomers, and the invention actually facilitates and selects for lower molecular weight hydrocarbons via batt solvent action. Herbaceous hydrocarbon bearing plants that produce large amounts of liquid terpenes are ideal for use in this invention. This invention focuses on Euphorbia tirucalli as the preferred plant for use in this invention due to its unique botanical structure and agronomic characteristics.
Attempts in the prior art have focused on enzyme and pyrolysis based assistance in elevating levels of hydrocarbon recovered per unit biomass of other plants with similar botanical and hydrocarbon bearing characteristics. The prior art suffered from inefficiencies due to the energy costs required to achieve pyrolysis, the heat generated in the process, and the costs to derive the enzymes required for processing the biomass and extracting hydrocarbons. The prior art also suffered from inefficient and unpredictable yields of hydrocarbons from the raw biomass feedstocks. These early inventions existed in an environment of low oil prices coupled with less knowledge of plant agronomy and biochemistry. Today oil prices are much higher, making the benefit of these inventions per unit of biomass less economically attractive.
The use of plant hydrocarbons is not new, but a novelty of this invention deals with a process isolating and selecting for petroleum-like hydrocarbons from hydrocarbon bearing plants—particularly Euphorbia tirucalli—for the creation of a composition of matter to be used as a petroleum substitute. The nature of this invention includes a process for preparing and executing a low temperature solvent extraction of plant hydrocarbon. This invention develops a simpler and more economic way of yielding a composition of matter suitable as a petroleum substitute, Phytoleum, from plant biomass in a continuous process focusing on Euphorbia tirucalli as the preferred plant for use.
The primary object of the invention is to provide for the creation of a new hydrocarbon fluid fuel source to be called Phytoleum.
Another object of the invention is to provide for the creation of a renewable hydrocarbon fluid fuel source that is carbon neutral.
A further object of the invention is to provide for the creation of a hydrocarbon fluid fuel source that is compatible with existing means of distribution and augmentation of existing petroleum-based fuels.
Still yet another object of the invention is to provide for the creation of a plant based source for hydrocarbon fluid fuel that is sufficiently high yielding to be economically viable.
Another object of the invention is to provide a process for the efficient extraction and refinement of naturally occurring hydrocarbon elements in plant based organic material.
Another object of the invention is to provide a process for the utilization of solvents in the extraction and refinement of naturally occurring hydrocarbon elements in plant based organic material.
A further object of the invention is to identify Euphorbia tirucalli biomass in the process of the extraction and refinement of a new hydrocarbon fluid fuel source.
Other objects and advantages of the present invention will become apparent from the following descriptions, taken in connection with the accompanying drawings, wherein, by way of illustration and example, an embodiment of the present invention is disclosed.
In accordance with a preferred embodiment of the invention, there is disclosed the creation of a composition of matter comprising of a low molecular weight hydrocarbon fluid comprised mainly of oligomerized pentenes chief among those being 2-Methyl-2-Butene subunits as well as related plant isoprenoids composed of 2-Methyl-1-Butene subunits and other hydrocarbons from Euphorbia tirucalli biomass and a process for the extraction and refinement in making the same composition through the creation of solvent permeable batting mat and a multi-phase solvent extraction.
In accordance with a preferred embodiment of the invention, there is disclosed a process for producing Phytoleum—a composition of matter comprising of the creation of a low molecular weight hydrocarbon fluid comprised mainly of oligomerized pentenes chief among those being 2-Methyl-2-Butene subunits as well as related plant isoprenoids composed of 2-Methyl-1-Butene subunits and other hydrocarbons from Euphorbia tirucalli biomass through the process of the extraction and refinement in making the same composition through the creation of a solvent permeable batting mat and a multi-phase solvent extraction comprising the steps of subjecting Euphorbia tirucalli biomass to compressive and shear forces forms a solvent permeable mat of biomass, producing from Euphorbia tirucalli biomass a fibrous solvent permeable batting mat, subjecting the batting mat to a multiple phased solvent wash system, and refining the end product for isolation of the Phytoleum end product.
The drawings constitute a part of this specification and include exemplary embodiments to the invention, which may be embodied in various forms. It is to be understood that in some instances various aspects of the invention may be shown exaggerated or enlarged to facilitate an understanding of the invention.
Detailed descriptions of the preferred embodiment are provided herein. It is to be understood, however, that the present invention may be embodied in various forms. Therefore, specific details disclosed herein are not to be interpreted as limiting, but rather as a basis for the claims and as a representative basis for teaching one skilled in the art to employ the present invention in virtually any appropriately detailed system, structure or manner.
The invention relates to a process by which a composition of matter being a liquid hydrocarbon mixture is extracted from Euphorbia tirucalli biomass via pulverization of said biomass then a multiple phased solvent wash and recovery is employed to purify the material and recover the solvent from the plant hydrocarbon. The composition of matter yielded as a hydrocarbon material is suitable for use as a fuel or chemical feedstock.
A schematic representation of the overall process is shown in
The first step in the process is the formation of a fibrous batting mat from the fresh biomass of Euphorbia tirucalli (see
The material is then amalgonated into a batting. The individual layers of the biomass mat are layered one atop another to create a fairly uniform biomass layer from the raw biomass, which necessary for efficient processing due to its biological origins in the field raw biomass has a high degree of physical variability. This batt making is key for creating a biomass product of fairly uniform mechanical properties for the solvent wash machinery. A schematic of the batt maker overall process is shown in both
The batt maker takes the material from the pulverization unit and arranges it into multiple layers. This is done by moving the pulverized material into separate streams via a manifold and reorienting the layers one on top of another vertically to form a continuous batt of material with a similar consistency for the solvent wash (see
In the dry milling of this biomass, meaning no additional process water is added during milling, an aqueous solution will also be produced. This aqueous portion arising from the milling will be recovered and added into the solvent extraction stream or juice as shown in
The overall resulting product from this first series of steps is a solvent permeable fibrous mat of material suitable for solvent extraction (see
The next step is to subject the batt material to a phased multi-wash solvent system. The solvent of preferable use in the methodology is hexane however other non-polar solvent solutions can be used in this process. The multi-wash solvent system also is conducive to multiple types of solvent solutions if a sequentially selected removal of hydrocarbon oil constituents is desired.
The multi phase wash system is defined by a continuous system of washing solvent through the mat to where a gradient of solvent/oil mixture is achieved. The preferable method would be to use gravity, however other systems using pressure and mechanical forces could be used to achieve a similar effect. The solvent/oil gradient is crucial to this aspect of the invention as this allows for the most economical level of solvent to be used to extract the oil. This correlates with lower volumes of solvent needed to extract the hydrocarbon oil to minimize solvent loss and decrease the per unit energy needed to recover the solvent after extraction. The schematic representation of the overall unit is shown in
Once the solvent has flowed through the mat it is collected at the loading end of the unit as washer outflow as shown in
After the mat has transited though all solvent wash units, it would move to a solvent recovery unit to recover the solvent remaining in the mat for collection and reuse. The mat would be heated to drive off solvent until the levels remaining in the mat are suitable for system discharge.
In this manner, the waste biomass bagasse mat would be brought into an evaporator/boiler chamber as shown in
The solution decanted from the washer units will consist of a mixture of water, water solubles, and a solvent/Phytoleum mixture. The press water or juice from the matting step would also be added to the stream as the juice will contain some oil solubles in its raw state. This stream of liquids and solubles would be subjected to a clarification process to remove any dirt or foreign objects that may still be in the liquids from the washer units. Water and oil solubles need to be separated from the stream and this is best achieved via centrifugation. The schematic representations for these steps for separation of the oils and water are shown in
The mixture to be centrifuged exists in two phases—One lipophyllic, the solvent/Phytoleum solution, and one hydrophillic, the juice. After centrifugation, the solvent/Phytoleum oil mixture would head to an evaporator or distillation column to remove the solvent as shown in
The Phytoleum itself has fairly unique characteristics compared to vegetable oils, fats, and other more well known lipophyllic biological derivatives. In particular the Euphorbia tirucalli Phytoleum is comprised of terpenes, chlorophyll, carotenes, as well as some other until now less defined and less well known materials. These metabolites which make up a plurality of the Euphorbia tirucalli Phytoleum are primarily of oligomerized pentenes. These metabolites that comprise the Phytoleum oil have large portions of 2-Methyl-2-Butene subunits. These are low molecular weight hydrocarbons with very desirable properties for the petroleum industry. They are sometimes manufactured as gasoline additives and plastic polymer precursors. They can be directly distilled and utilized as a fuel or in combination with the other Phytoleum constituents be refined into a suite of light petrochemical products. The Building Blocks of the composition are shown in
In the preferred exercise of the invention the process yields a composition of matter, Phytoleum (see
The lightest and ideally most abundant fraction is the Phytoleum naphtha fraction (C10, rarer C5, C15) as shown in
While the invention has been described in connection with a preferred embodiment, it is not intended to limit the scope of the invention to the particular form set forth, but on the contrary, it is intended to cover such alternatives, modifications, and equivalents as may be included within the spirit and scope of the invention as defined by the appended claims. Although the present invention has been described in considerable detail with reference to certain preferred versions thereof, other versions are possible. Therefore, the spirit and scope of the appended claims should not be limited to the description of the preferred versions contained therein. Any element in a claim that does not explicitly state “means for” performing a specified function, or “step for” performing a specified function, is not to be interpreted as a “means” or “step” clause as specified in 35 U.S.C. Section 112 Paragraph 6. In particular, the use of the “step of” in the claims is not intended to invoke the provisions of 35 U.S.C. Section 112 Paragraph 6.
The reader's attention is directed to all papers and documents which are filed concurrently with this specification and which are open to public inspection with this specification, and the contents of all such papers and documents are incorporated herein by reference. All features disclosed in this specification (including any accompanying claims, abstract, and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. Unless expressly stated otherwise, each feature disclosed is one example only of a generic series of equivalent or similar features.