Insulation securement system and associated methods

Information

  • Patent Grant
  • 12031676
  • Patent Number
    12,031,676
  • Date Filed
    Tuesday, March 24, 2020
    4 years ago
  • Date Issued
    Tuesday, July 9, 2024
    4 months ago
Abstract
Systems and methods for insulating vessels are disclosed. In one or more embodiments, the disclosure provides a vessel insulation system (e.g., for use with a reactor or pressure vessel), which includes a floating ring sized to circumscribe a top nozzle of a vessel; a plurality of straps connected to the floating ring, the plurality of straps extending downward from the floating ring and being positioned to run along a length of the outer shell of the vessel; and a plurality of segmented rings positioned to circumscribe the outer shell of the vessel and connected to the plurality of straps. The plurality of segmented rings is configured to support an insulation material circumscribing the outer shell of the vessel, which can provide effective securement of the insulation material around the outer shell without welding components on the vessel to secure the insulation material.
Description
FIELD OF THE DISCLOSURE

The disclosure herein relates to systems and methods for insulating reactor and/or pressure vessels, such as catalytic reactors, and one or more embodiments of an apparatus and methods suitable for use in supporting and securing insulation materials to such vessels.


BACKGROUND

Reactor vessels and pressure vessels are used for various applications in research, development, and production. The size and shape of such vessels can vary widely, but certain features are consistent among most vessels. The outer shells of reactor and pressure vessels are typically welded at various positions during construction/formation of the vessels. For example, since reactor vessels are typically very large, various sections of material forming the outer shell must be individually welded together during construction of the vessel. The materials used for producing such outer shells (e.g., metals and alloys) often require post-weld heat treatment (PWHT) to relieve residual stress associated with the shell after welding. PWHT can serve to reduce stress associated with weldments down to acceptable levels approximating the adjacent base metal capabilities, but such treatment generally reduces the strength of the material at/around the site at which PWHT is applied.


Reactor vessels and pressure vessels may be insulated to ensure thermal continuity within the vessel (and throughout the contents of the vessel). As will be referenced further herein below, the weight associated with insulation materials can be substantial, particularly with respect to reactors of significant height. Common industry practice for installation of insulation materials on reactor vessels is to weld brackets or lugs to the vessel shell to support the vertical weight of the insulation materials when installed thereon. The welding of such brackets/lugs onto vessel shells is quite expensive (e.g., due to high energy costs and maintenance-related delays) as the entire reactor vessel must be subjected to an additional PWHT process following the welding. Such PWHT process relieves residual welding stress from the vessel prior to installing the insulation material and placing the reactor vessel into operation. Some alternative insulation methods use tightly banded straps around the vessel shell to hold layers of insulation in place mechanically via friction. Such friction methods for banding insulation to vessels without brackets typically do not hold up well over time. Therefore, even these friction methods commonly utilize brackets that are installed by welding as part of shop fabrication or installation in the field. In either event, further PWHT is generally necessary to relieve residual stress in the reactor vessel that is caused due to the welding treatment used to secure the brackets or lugs to the vessel shell, which support the insulation material. As noted above, PWHT commonly reduces the strength of the material at and around the treatment site. Further, PWHT can negatively impact vessels made of materials that are susceptible to cracking. For instance, potential detrimental effects of PWHT include reactor distortion, temper embrittlement, over-softening, reheat cracking, and the like.


Certain industry practices do not require PWHT; such approaches include using a friction banding method with multiple banded straps (e.g., such as ratchet tightening straps) positioned at different points vertically along the exterior of the reactor vessel that can be tightened to hold the insulation layers in place via friction. Example banding systems for use with insulation applications, as will be understood by those skilled in the art, are described in U.S. Pat. No. 9,068,582 to Wolbert et al. However, such a banding approach (without further securement, e.g., via welding) suffers from various drawbacks. For example, the life span of such insulation configurations is shorter than configurations employing welding and the banded straps are particularly susceptible to sagging over time as the reactor vessel circumferentially expands and contracts during use. Further, such configurations are less effective for sealing out moisture and protecting the insulation from deterioration due to exposure to moisture.


Therefore, it would be advantageous to develop methods and systems for insulating reactor/pressure vessels that minimize the amount of welding required to secure insulation, and thus reduce the amount of post-weld heat treatment.


SUMMARY OF THE DISCLOSURE

The disclosure herein provides one or more embodiments of systems and methods to secure insulation, e.g., on the vessel shell of a reactor vessel or pressure vessel. Such systems and methods advantageously do not rely on welding and thus can eliminate the need for PWHT of the vessel for insulation securement. These systems and methods can provide for extended lifespan of the vessel and can further offer resistance to deterioration of the insulation as a result of sagging, water penetration, and/or other external factors or contaminants.


In one aspect, the disclosure provides a vessel insulation system comprising a floating ring sized to circumscribe a top nozzle (e.g., a discharge nozzle) of a vessel (e.g., a reactor vessel or a pressure vessel), a plurality of straps connected to the floating ring, the plurality of straps extending downward from the floating ring and being positioned to run along a length of the outer shell of the vessel; a plurality of segmented rings positioned to circumscribe the outer shell of the vessel and connected to the plurality of straps, wherein the plurality of segmented rings is configured to support an insulation material circumscribing the outer shell of the vessel. In a further aspect, the disclosure provides a vessel insulation system, comprising: a floating ring circumscribing a top nozzle of a vessel; a plurality of straps connected to the floating ring that extend downward from the floating ring a length along an outer shell of the vessel; and a plurality of segmented rings for circumscribing the outer shell of the vessel and connected to the plurality of straps, wherein the plurality of segmented rings is configured to support an insulation material circumscribing the outer shell of the vessel. A further aspect of the disclosure provides an insulated vessel, comprising a vessel, an insulation material, and a vessel insulation system as described herein. In various embodiments provided herein, the vessel is a reactor vessel or a pressure vessel.


In some embodiments, the floating ring, the plurality of straps, and the plurality of segmented rings independently comprise a material selected from the group consisting of metals, metal alloys, or any combination thereof. In some embodiments, the floating ring, the plurality of straps, and the plurality of segmented rings comprise a stainless steel material. In some embodiments, the plurality of straps is substantially perpendicular to the plurality of segmented rings. In some embodiments, the floating ring, the plurality of straps, and the plurality of segmented rings have not been welded to the outer shell of the vessel. In some embodiments, the plurality of segmented rings is supported by the plurality of straps. In some embodiments, the insulation material is a plurality of insulation segments, each insulation segment being individually supported by a corresponding segment of the plurality of segmented rings. In some embodiments, each insulation segment is configured to be individually removable and/or replaceable, without disturbing any of the remaining insulation segments.


In some embodiments, the insulation material comprises a first layer of insulation, a second layer of insulation, and an outer jacket surrounding the first and second insulation layers. In some embodiments, the outer jacket comprises a corrugated metal jacketing material and a plurality of springs. In some embodiments, the vessel insulation system may further comprise a skirt portion positioned proximate a base portion of the vessel. In some embodiments, the skirt portion comprises a plurality of springs connected to the plurality of straps, and wherein the plurality of springs is configured to allow for vertical expansion of the vessel insulation system during operation of the vessel.


Some aspects of the disclosure provide methods of insulating vessels (e.g., reactor vessels or pressure vessels). For instance, such methods may comprise installing an embodiment of the vessel insulation system disclosed herein and installing one or more layers of an insulation material circumscribing an outer shell of the vessel. In some embodiments, the method of insulating a vessel may further comprise installing an outer jacket surrounding the one or more layers of insulation material. In some embodiments, the one or more layers of insulation material are installed in individual insulation segments. In some embodiments, each insulation segment is configured to be individually removable and/or replaceable, without disturbing any of the remaining insulation segments.


In some embodiments, a method of insulating a vessel without welding any insulation support structure to the vessel is disclosed. In such embodiments, for example, the method may comprise: (i) positioning a floating ring proximate to and circumscribing a top nozzle of a vessel, (ii) attaching a plurality of straps to the floating ring extending downward from the floating ring a length along an outer shell of the vessel, (iii) selectively positioning a plurality of segmented rings along the length of the outer shell, wherein the segmented rings are attached to and supported by the plurality of straps, and (iv) installing an insulation material that circumscribes the outer shell of the vessel, the insulation material being supported by the segmented rings. In some embodiments, the method may further comprise installing the insulation material in individual insulation segments. In some embodiments, none of the above method steps (i)-(iii) comprise welding any material to the outer shell of the vessel.


Other aspects of the disclosure are directed to a method of maintenance and repair of an insulated vessel. In one such embodiment, the method includes providing a vessel having an embodiment of the vessel insulation system disclosed herein and selectively removing and replacing individual insulation segments based on a pre-determined level of deterioration without disturbing any of the remaining insulation segments.


The disclosure thus includes, without limitation, the following embodiments:


A vessel insulation system, comprising: a floating ring sized to circumscribe a top nozzle of a vessel; a plurality of straps connected to the floating ring, the plurality of straps extending downward from the floating ring and being positioned to run along a length of the outer shell of the vessel; and a plurality of segmented rings positioned to circumscribe the outer shell of the vessel and connected to the plurality of straps, wherein the plurality of segmented rings is configured to support an insulation material circumscribing the outer shell of the vessel.


A vessel insulation system as disclosed above, wherein the floating ring, the plurality of straps, and the plurality of segmented rings each independently comprise a material selected from the group consisting of metals, metal alloys, or any combination thereof.


A vessel insulation system as disclosed above, wherein the floating ring, the plurality of straps, and the plurality of segmented rings each comprise a stainless steel material.


A vessel insulation system as disclosed above, wherein the plurality of straps is substantially perpendicular to the plurality of segmented rings.


A vessel insulation system as disclosed above, wherein the floating ring, the plurality of straps, and the plurality of segmented rings have not been welded to the outer shell of the vessel.


A vessel insulation system as disclosed above, wherein the plurality of segmented rings is supported by the plurality of straps.


An insulated vessel, comprising: a reactor vessel; an insulation material; and the reactor vessel insulation system as disclosed above.


An insulated vessel as disclosed above, wherein the insulation material is a plurality of insulation segments, each insulation segment being individually supported by a corresponding segment of the plurality of segmented rings.


An insulated vessel as disclosed above, wherein each insulation segment is configured to be individually removable and/or replaceable, without disturbing any of the remaining insulation segments.


An insulated vessel as disclosed above, wherein the insulation material comprises a first layer of insulation, a second layer of insulation, and an outer jacket surrounding the first and second insulation layers.


An insulated vessel as disclosed above, wherein the outer jacket comprises a corrugated metal jacketing material and a plurality of springs.


An insulated vessel as disclosed above, further comprising a skirt portion positioned proximate a base portion of the vessel.


An insulated vessel as disclosed above, wherein the skirt portion comprises a plurality of springs connected to the plurality of straps, and wherein the plurality of springs is configured to allow for vertical expansion of the vessel insulation system during operation.


A method of insulating a vessel, the method comprising: providing a vessel and the vessel insulation system as disclosed above; and installing one or more layers of an insulation material circumscribing an outer shell of the vessel.


A method of insulating a vessel as disclosed above, further comprising installing an outer jacket surrounding the one or more layers of insulation material.


A method of insulating a vessel as disclosed above, wherein the one or more layers of insulation material are installed in individual insulation segments.


A method of insulating a vessel as disclosed above, wherein each insulation segment is configured to be individually removable and/or replaceable, without disturbing any of the remaining insulation segments.


A method of insulating a vessel without welding any insulation support structure to the vessel, the method comprising: (i) positioning a floating ring proximate to and circumscribing a top nozzle of a vessel; (ii) attaching a plurality of straps to the floating ring extending downward from the floating ring a length along an outer shell of the vessel; (iii) selectively positioning a plurality of segmented rings along the length of the outer shell, wherein the segmented rings are attached to and supported by the plurality of straps; and (iv) installing an insulation material that circumscribes the outer shell of the vessel, the insulation material being supported by the segmented rings.


A method of insulating a vessel without welding to the vessel as disclosed above, further comprising installing the insulation material in individual insulation segments.


A method of insulating a vessel without welding to the vessel as disclosed above, wherein none of steps (i)-(iii) comprise welding any material to the outer shell of the vessel.


A method of maintenance and repair of an insulated vessel, the method comprising: providing an insulated vessel as disclosed above, and selectively removing and replacing individual insulation segments based on a pre-determined level of deterioration without disturbing any of the remaining insulation segments.


These and other features, aspects, and advantages of the disclosure will be apparent from a reading of the following detailed description together with the accompanying drawings, which are briefly described below. The disclosure includes any combination of two, three, four, or more features or elements set forth in this disclosure or recited in any one or more of the claims, regardless of whether such features or elements are expressly combined or otherwise recited in a specific embodiment description or claim herein. This disclosure is intended to be read holistically such that any separable features or elements of the disclosure, in any of its aspects and embodiments, should be viewed as intended to be combinable, unless the context of the disclosure clearly dictates otherwise.





BRIEF DESCRIPTION OF THE DRAWINGS

Having thus described the disclosure in general terms, reference will now be made to the accompanying drawings, which are not necessarily drawn to scale, and wherein:



FIG. 1 illustrates a perspective view of a horizontally-positioned reactor vessel having a reactor vessel insulation system comprising a floating ring circumscribing a top nozzle of the reactor vessel, a plurality of straps attached to the floating ring, and a plurality of segmented rings attached to the straps, installed thereon according to an embodiment of the disclosure;



FIG. 2 illustrates a two-dimensional view of the top of a reactor vessel having a reactor vessel insulation system installed thereon, according to an embodiment of the disclosure;



FIG. 3 shows a cut-away view of detail A as shown in FIG. 2, wherein detail A illustrates the physical connection between one of a plurality of straps and a floating ring, according to an embodiment of the disclosure;



FIG. 4 shows a cut-away view of detail B as shown in FIG. 2, wherein detail B illustrates the physical connection between one of a plurality of straps and one of a plurality of segmented rings, according to an embodiment of the disclosure;



FIG. 5 illustrates a reactor vessel insulation system that is fully installed on a vertical reactor vessel including a first layer of insulation material and a skirt portion attached to a base portion of the reactor vessel, according to an embodiment of the disclosure;



FIG. 6 shows a cut-away view of detail C as shown in FIG. 5, wherein detail C illustrates the physical connection between one of a plurality of straps and a flange attached to a base portion of the reactor vessel, according to an embodiment of the disclosure;



FIG. 7 shows a cut-away view of detail C in one or more embodiments where the reactor vessel insulation system further comprises a second floating ring positioned at the base portion of the reactor vessel, wherein detail C illustrates the physical connection between one of a second plurality of straps and a second flange attached to a base portion of the reactor vessel, according to an embodiment of the disclosure;



FIG. 8 illustrates a reactor vessel insulation assembly that is fully installed on a vertical reactor vessel including a second layer of insulation material, according to an embodiment of the disclosure;



FIG. 9 illustrates an outer jacket surrounding a first layer of insulation material and a second layer of insulation material, according to an embodiment of the disclosure;



FIG. 10 shows a close up cross-sectional view of a first layer of insulation material, a second layer of insulation material, and an outer jacket surrounding the first and second layers of insulation material being supported by a reactor vessel insulation system according to an embodiment of the disclosure; and



FIG. 11 illustrates a perspective view of the horizontally-positioned reactor vessel and the reactor vessel insulation system as depicted in FIG. 1, wherein the reactor vessel and the reactor vessel insulation system have been completely encased by one or more layers of insulation material and an outer jacket, according to an embodiment of the disclosure.





DETAILED DESCRIPTION OF THE DISCLOSURE

The disclosure now will be described more fully hereinafter with reference to specific embodiments and particularly to the various drawings provided herewith. Indeed, the disclosure may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will satisfy applicable legal requirements. As used in the specification, and in the appended claims, the singular forms “a,” “an,” “the,” include plural referents unless the context clearly dictates otherwise.


The disclosure provides materials and methods suitable for use in insulating vessels (e.g., including, but not limited to, pressurized vessels, reactor vessels, and catalytic reactor vessels). In particular, as will be provided in further detail herein below, the materials and methods relate to an insulation securement system (referred to herein also as an “insulation system” and/or a “reactor vessel insulation system”) that does not require any welding to secure insulation to the shell of a vessel. Such an approach is advantageous, because minimizing the amount of welding to the exterior of a reactor vessel shell (and thus minimizing the subsequent PWHT applied thereto), can reduce potential damage to the outer shell of the vessel and provide efficiency and cost savings.


The types of catalytic reactors for which one or more embodiments of the disclosed insulation systems are relevant may vary and generally may include any type of vessels that are advantageously insulated. Various embodiments of the reactor vessel insulation systems according to the disclosure will be discussed herein in more detail regarding their specific application to gasoil hydrotreater (GOHT) catalytic reactor vessels, which is discussed by way of example only and is not meant to be construed as limiting with respect to the particular application of the disclosed embodiments of the systems and methods herein.


As is known in the art, vessels such as catalytic reactor vessels may be formed of various types of metals and/or metal alloys. For instance, traditional reactor vessels are commonly formed of carbon steel materials. Generally, these reactor vessels, as constructed, have been pre-treated to relieve stress imparted on the metal and/or metal alloy materials used in forming the reactor vessel. The sizes and shapes of vessels can vary widely, e.g., from small-scale, laboratory-based systems to very large, industrial vessels. In some embodiments, vessels for which the disclosed materials and methods are applicable can have heights, e.g., of at least about 100 feet, at least about 125 feet, at least about 150 feet, or at least about 175 feet.


Reactor vessels typically must be insulated in order to minimize heat loss and maintain thermal conductivity within the reactor vessel during use. The types of insulation materials used for this purpose can vary and typically include, but are not limited to, inorganic insulation materials (e.g., fibrous materials, such as mineral wool, glass wool, rock wool, and glass fiber felts; cellular materials, such as calcium silicate and cellular glass; and the like), organic insulation materials (e.g., petrochemical materials, such as expanded polystyrene (EPS), extruded polystyrene (XPS), polyurethane (PUR), phenolic foam, and polisocyanurate foam (PIR); renewable materials, such as cellulose, cork, wood fiber, hemp fiber, flax wool, sheep wool, and cotton insulation; and the like), and various other insulation materials (e.g., such as aerogels, vacuum panels, metallic foils, and/or reflective metallic insulation (RMI)). Such types of insulation materials may be used in various combinations, layers, and amounts as typically known in the art. For example, high temperature industrial insulation materials are commercially available from Aspen Aerogels, Inc.™ (see, e.g., Pyrogel HPS, Pyrogel XTE, and Pyrogel XTF insulation materials). According to the present disclosure, the types of insulation secured by the system provided herein are not particularly limited and include all materials that might be used for this purpose.


As depicted in FIG. 1, one embodiment of a vessel insulation system according to the disclosure comprises a floating ring 10 circumscribing a top nozzle 4 of a reactor vessel 2 and a plurality of straps 12 connected or attached to floating ring 10, which extend along a length L of an outer shell 6 of the reactor vessel 2. A plurality of segmented rings 14 circumscribe the outer shell 6 and connected or attached to the plurality of straps 12, wherein the plurality of segmented rings 14 is configured to support an insulation material circumscribing the outer shell 6 of the reactor vessel 2. It should be noted that the reactor vessel and the reactor vessel insulation system are depicted in a horizontal configuration as presented in FIG. 1; however, the reactor vessel, and likewise the reactor vessel insulation system, is typically in an upright, vertical configuration during use (e.g., as depicted in FIGS. 5-9 and as detailed further herein), such that the reactor vessel insulation system essentially hangs from the top of the reactor vessel via the floating ring (e.g., like a bird cage or an umbrella-type configuration) and substantially surrounds at least a portion of the outer shell of the reactor vessel.


A “floating ring” as used herein is a ring (typically constructed of metal, but not limited thereto), circumscribing a component at the top of the reactor, e.g., a discharge nozzle (as shown in FIG. 1). The floating ring may be in contact with the outer shell of the vessel, but it is not otherwise connected or attached to the outer surface of reactor vessel in any form other than via physical contact (e.g., it is not attached mechanically via welding, heat treating, clamping, etc.). Generally, the term “floating” as used in the industry can be used in reference to a floating ring bearing, a floating disc, and the like. Such terminology generally indicates that the ring material circumscribes some other component and may, or may not, necessarily come into physical contact with that other component. In vehicle applications using floating ring bearings, for example, a fluid barrier or pressurized air might come at least partially between the floating ring bearing and a cylindrical shaft such that at certain points, the floating ring bearing may contact the shaft, whereas at other points along the inner circumference of the floating ring bearing, the floating ring bearing may not contact the shaft. Likewise, it should be noted that a “floating ring” as used herein may or may not be in contact, fully or partially, with the outer shell of the reactor vessel at various times during operation of the reactor vessel. The floating ring may be constructed of a variety of different materials, for example, metals and/or alloys of metal. In some embodiments, the floating ring may be formed of a stainless steel material in particular. In some embodiments, for example, the floating ring may be formed of a stainless steel material such as S.S. TP 304. Relevant standards and specifications for such materials (and certain other materials referenced herein) are provided in ASTM A312 TP 304/304L (Standard Specifications for Stainless Steel Seamless Pipes and Tubes). The type and/or grade of stainless steel material may vary and such materials are commercially available from suppliers, such as, e.g., U.S. Metals, Inc.


A “plurality of straps” as used herein, refers to two or more elongated straps that are designed to extend along at least a portion of the length of the outer shell of the reactor vessel. In some embodiments, a plurality of straps may refer to at least 3 straps, at least 4 straps, at least 5 straps, at least 6 straps, at least 7 straps, at least 8 straps, or more. Generally, the length of the plurality of straps may be sized to extend at least a majority of the length of the reactor vessel (so as to extend a substantial portion of the length of the reactor, including embodiments wherein the straps extend the full length of the reactor, although not limited thereto). Typically, all straps are substantially the same length. The plurality of straps may be constructed of a variety of different materials, for example, metals and/or alloys of metal. In some embodiments, for example, the plurality of straps may be formed of a stainless steel material, e.g., such as SA 240 TP 304. Again, relevant standards and specifications for such materials are provided in ASTM A240 TP 304/304L (Standard Specifications for Stainless Steel Sheets and Plates). The type and/or grade of stainless steel material may vary and such materials are commercially available from suppliers, such as, e.g., U.S. Metals, Inc. The straps typically comprise the same material as one another, although the system is not limited thereto, and one strap may comprise a different material than another.


A “plurality of segmented rings” as used herein, refers to two or more rings (typically substantially circular rings) that are at least partially disconnected or detached at various points along the circumference of each ring, forming discrete segments in each ring. The discrete segments are connected or attached perpendicular or nearly perpendicular to the straps to form the segmented rings, which are circumferentially positioned around the vessel. Thus, the rings are typically positioned horizontally (with respect to the plurality of straps, which are described as being positioned “vertically”). Again, it is understood that such references are relevant to configurations wherein the vessel is upright, rather than on its side (as shown in FIG. 1). In some embodiments, the plurality of segmented rings may refer to at least 3 segmented rings, at least 4 segmented rings, at least 5 segmented rings, at least 6 segmented rings, at least 7 segmented rings, at least 8 segmented rings or more. In some embodiments, the number of discrete segments in each individual segmented ring may vary, for example, each segmented ring may comprise at least 2 discrete segments, at least 4 discrete segments, at least 6 discrete segments, at least 8 discrete segments, or more that are at least partially detached from each other, but that are connected or attached to the straps to form a segmented ring circumscribing the vessel. Generally, the diameter of the segmented rings may be sized appropriately based on the diameter of the reactor vessel. Typically, where the vessel has substantially the same diameter along its length, the segmented rings can have substantially the same diameter as one another (sufficient to circumscribe the exterior shell of the vessel). However, depending at least in part upon the construction/shape of the reactor and the longitudinal placement of the rings along the vessel, the diameters of the rings may vary from one another in order to accommodate the varying circumference of the vessel along its longitudinal axis. The plurality of segmented rings may be constructed of a variety of different materials, for example, metals and/or alloys of metal. In some embodiments, for example, the plurality of segmented rings may be formed of a stainless steel material, e.g., such as SA 516 GR.70N. Relevant standards and specifications for such materials are provided in ASTM A516 GR.70N (Standard Specifications for Steel Plates). The type and/or grade of stainless steel material may vary and such materials are commercially available from suppliers, such as, e.g., U.S. Metals, Inc. The rings typically comprise the same material as one another, although the system is not limited thereto, and one ring may comprise a different material than another in some embodiments as will be understood by those skilled in the art.


An insulation system as provided herein generally has at least two such segmented rings (as noted above) circumscribing the vessel, at various positions along the length thereof. Typically, it includes significantly more than two. In some embodiments, for example, the insulation system may comprise at least 4 segmented rings, at least 8 segmented rings, at least 12 segmented rings, at least 16 segmented rings, at least 20 segmented rings, at least 24 segmented rings, or more (e.g., such as about 4 to about 40 individual segmented rings, about 6 to about 20 individual segmented rings, or about 8 to about 12 individual segmented rings). Generally, the number of segmented rings provided in the insulation system may vary based on the particular height of the insulation vessel (e.g., the taller the vessel, the more segmented rings generally required) and the operating temperature of the vessel (e.g., the higher the temperature of the vessel, the more segmented rings generally required, e.g., in order to maintain outer jacketing screws in place). The number of segmented rings provided in the insulation system may further vary based on the weight of the particular type of insulation material being used, the standard size of the insulation material being installed thereon, the number of exterior components on the reactor vessel requiring clearance (e.g., exterior valves and/or piping that cannot be covered or completely encased by the insulation materials), and combinations thereof. In general, the overall configuration of the segmented rings positioned along the longitudinal axis or length of the reactor vessel (e.g., including the number and the characteristics thereof) can be adjusted to accommodate any size or type of reactor vessel and/or to support any size or type of insulation material connected or attached thereto, such as those described herein above. In some embodiments, the number of segmented rings may be adjusted to allow for a maximum level of expansion of the vessel so as to allow for expansion and/or contraction of the vessel. For example, in some embodiments, the number of segmented rings is configured to allow for a maximum level of expansion of less than about 0.5 inches over a 15-ft span, less than about 0.35 inches over a 15-ft span, or less than about 0.25 inches over a 15-ft span. Where the system comprises an outer jacket (as will be described in further detail herein below), the number of segmented rings can, in some embodiments, be selected such that screws in the outer jacket will not be pulled apart with expansion associated with temperature cycles.


In some embodiments, for example, the number of segmented rings positioned circumferentially about the vessel along its longitudinal axis may be affected by the specific load capacity of each individual segmented ring and/or the load capacity of each individual segment within those segmented rings. In some embodiments, one or more dimensions (e.g., such as the width) of the segmented rings may be altered so as to increase the load capacity of those rings. Typically, each of the segmented rings have substantially the same dimensions and/or substantially the same load capacity. However, such a configuration is not meant to be limiting and generally any and/or all of the individual segmented rings may have different dimensions and/or load capacities. In some embodiments, each individual segmented ring may be configured to support at least 100 lbs of insulation material, at least 1,000 lbs of insulation material, at least 10,000 lbs of insulation material, or more weight of insulation material. In some embodiments, the plurality of segmented rings may be evenly or non-evenly spaced circumferentially along the longitudinal axis or length of the reactor vessel. In some embodiments, the plurality of segmented rings may be closely spaced apart, for example, such that none of the individual rings are more than 20 feet apart, more than 15 feet apart, more than 10 feet apart, or more than 5 feet apart. In other words, the plurality of segmented rings may be closely spaced apart from each other such that each ring is less than 5 feet apart, less than 10 feet apart, less than 15 feet apart or even less than 20 feet apart. In some embodiments, the plurality of segmented rings may be widely spaced apart, for example, such that substantially all of the individual rings are spaced at least 20 feet apart, at least 25 feet apart, at least 30 feet apart, at least 35 feet apart, or at least 40 feet apart.



FIG. 2 depicts a two-dimensional view looking down from above at the top of the reactor vessel equipped with an insulation system according to an embodiment of the disclosure. In the embodiment depicted in FIG. 2, the floating ring 10 is connected or attached to the plurality of straps 12 as highlighted by detail A (which will be described in more detail in relation to FIG. 3) and the plurality of straps 12 is connected or attached to the plurality of segmented rings 14 as highlighted by detail B (which will be described in more detail in relation to FIG. 4). As noted above, each segmented ring may comprise any number of discrete segments therein that are at least partially detached from each other. For example, the detachment and/or disconnection point 14a of these discrete segments, either fully or partially, is depicted in FIG. 2. In some embodiments, the segmented rings may comprise one or more intermediate supports 24 connected or attached to the segmented rings 14 that provide, e.g., added strength and/or durability to the segmented rings. The number and/or positioning of these intermediate supports 24 may be varied, for example, based on the size of the reactor vessel, the type of insulation being used, and the like.


As noted above, the plurality of straps is generally physically connected or attached to the floating ring. The mechanism for connecting or attaching the plurality of straps may vary and generally may include any mechanism configured to maintain a secure connection or attachment between the floating ring and the plurality of straps before and during use of the reactor vessel. For example, FIG. 3 illustrates the physical connection or attachment of the plurality of straps and the floating ring according to an example embodiment of the present disclosure. As shown in FIG. 3, one of the plurality of straps 12 may be connected or attached to the floating ring 10 (a cross-sectional view of the floating ring 10 is depicted in FIG. 3) via a clamping mechanism 26. In some embodiments, the clamping mechanism 26 may comprise one or more clamping plates 28 that can be tightened by nut 30 and bolt 32 configurations. In some embodiments, the straps 12 may be doubled-over and/or folded within the clamping plates 28 prior to tightening in order to ensure a secure and permanent connection or attachment between the plurality of straps 12 and the floating ring 10, suitable for supporting the segmented rings (not shown) that are connected or attached thereto.


As noted above, the plurality of segmented rings 14 may be connected or attached to, and supported by the plurality of straps 12 at varying positions along the length of the straps 12. Generally, the plurality of straps 12 may be substantially parallel to the outer shell of the reactor vessel (e.g., such that the straps hang substantially flush to the outer shell of the vessel) and substantially perpendicular to the plurality of segmented rings 14 (e.g., forming an approximate 90° angle with the segmented rings). In some embodiments, the “plurality of straps” may be referred to herein as being “vertical” in nature and the “plurality of segmented rings” may be referred to herein as being “horizontal” in nature (although it is to be understood that when the reactor is on its side, such terms are not to be indicative of overall configuration and, rather, are used largely in reference to the direction of the longitudinal axis or length of the reactor, e.g., “vertical” generally refers to the direction along the length of the outer shell of the vessel, which is typically vertical while in use).


The mechanism for connecting or attaching the plurality of segmented rings to the plurality of straps may vary and generally may include any mechanism configured to maintain a secure connection or attachment between the plurality of straps and the plurality of segmented rings. For example, FIG. 4 illustrates the physical connection or attachment of the plurality of straps and the plurality of segmented rings according to one embodiment of the disclosure. As shown in FIG. 4, one of the plurality of segmented rings 14 (a cross-sectional view of one of the segmented rings is depicted in FIG. 4) may be attached to one of the plurality of straps 12 (which are substantially parallel to the outer shell 6 and substantially perpendicular to the segmented rings 14) via at least two curved metal plates 34 and at least one rivet 36 per plate. While the plurality of straps and the plurality of segmented rings are shown as being substantially perpendicular in the depicted embodiments, it should be noted that such a configuration is not required. For example, in some embodiments one or more of the segmented rings and the plurality of straps may form an angle that is less than about 90° or greater than about 90°. In some embodiments, the plurality of segmented rings may be connected or attached to the plurality of straps via various methods (e.g., such as welding, that does not contact the outer shell of the reactor vessel, or some alternative clamping mechanism) so long as the connection or attachment therebetween is sufficient to connect the rings and straps and support the weight of the insulation material.



FIG. 5 illustrates a reactor vessel insulation system according to an embodiment of the disclosure (e.g., including a floating ring 10, a plurality of straps 12, and a plurality of segmented rings 14) that has been installed on a reactor vessel 2 including a first layer of insulation material 18 and a skirt portion 36 attached to a base 38 of the reactor vessel 2. The skirt portion 36 (where present) may comprise various materials, e.g., such as a metal, metal alloy, and the like. In some embodiments, the skirt portion may comprise the same material as the reactor vessel and/or may comprise one or more different materials. In some embodiments, the skirt portion may be attached to the base 38 of the reactor vessel 2 such that the bottom head of the reactor vessel is covered by the skirt portion. One such embodiment is highlighted by detail C in FIG. 5. As depicted in FIG. 5, the reactor vessel is generally oriented in a vertical configuration once installed and operating and thus, in some embodiments, the skirt portion may be substantially perpendicular to the ground so as to provide a stable base for securing the reactor vessel in place. In some embodiments, for example, the skirt portion may be substantially cylindrical in shape; however, the shape of the skirt portion is not limited thereto. Generally, any type of skirt portion commonly used in the art may be suitable for use as described herein above. In some embodiments, the skirt portion may provide a support function for the reactor vessel and/or may be connected to or may surround a separate base support structure configured to provide foundational support to the reactor vessel. In some embodiments, the skirt portion 36 may comprise a plurality of springs (not pictured) connected to the plurality of straps 12 of the reactor vessel insulation system. In such embodiments, the springs may allow the reactor vessel insulation system to expand and/or contract as necessary during operation of the reactor vessel, e.g., allowing for the expansion and/or contraction of the reactor vessel during operation.



FIG. 6 shows a cut-away view of detail C as shown in FIG. 5, according to another embodiment of the present disclosure (labeled C′), wherein detail C′ illustrates a physical connection between one of the plurality of straps 12 and a flange 16 attached to the base portion 38 of the reactor vessel. In some embodiments, the plurality of straps 12 may be connected to the flange 16 via a clamping mechanism 40, for example, which may be the same type of clamping mechanism as described herein above with regard to the connection or attachment between the plurality of straps 12 and the floating ring 10 (see, e.g., FIG. 3). In some embodiments, a plurality of springs (not pictured) may be disposed between one of the plurality of straps 12 and the flange 16 to allow the vessel insulation system to expand and/or contract as necessary during operation of the vessel. In some embodiments, a skirt portion 36 may be connected or attached between the base 38 of the vessel and the ground, as noted above. It should be noted that the mechanism for connecting or attaching the plurality of straps to the base portion of the reactor may vary and generally may include any mechanism configured to maintain a secure connection or attachment between the flange and the plurality of straps during operation of the reactor vessel.


In some embodiments, reactor vessel insulation systems of the disclosure may comprise a second floating ring positioned proximate to a bottom head (e.g., commonly a hemispherical head) 42 of the reactor vessel and circumscribing a bottom component (e.g., a bottom nozzle 44) of the reactor vessel. In such embodiments, it should be noted that the second floating ring generally functions in a similar manner as floating ring 10 described herein above, with respect to FIG. 2 (e.g., comprising a second floating ring, a second plurality of straps, and at least one segmented ring), with exception to the fact that the second plurality of straps do not extend upward along the length of the outer shell of the reactor vessel but instead are only present on the bottom hemispherical head 42 of the reactor vessel. Generally, such a configuration provides support for one or more insulation materials installed proximate to the bottom head 42 of the reactor vessel. FIG. 7 shows a cut-away view, labelled C2, according to another embodiment where the reactor vessel insulation system further comprises a second floating ring (not pictured) positioned proximate to the bottom hemispherical head 42 of the reactor vessel and circumscribing a bottom nozzle 44 of the reactor vessel. In the embodiment depicted in FIG. 7, cut-away view labeled C2 illustrates the bottom connection of the plurality of straps 12, the connection of one of the second plurality of straps 48, and part of the skirt portion 36 attached to the base portion 38 of the reactor vessel. FIG. 7 depicts the physical connection between one of the plurality of straps 12 and the flange 16 (e.g., via clamping mechanism 40), the flange 16 being connected or attached to the base portion 38 of the reactor vessel, and the physical connection between one of a second plurality of straps 48 and a second flange 46 (e.g., via clamping mechanism 50) the second flange 46 being connected or attached to the base portion 38 of the reactor vessel. It should be noted that, in the depicted embodiment, the strap labeled 48 represents just one of a second plurality of straps 48 that connect or attach to the second floating ring circumscribing the bottom nozzle 44.



FIG. 8 illustrates a reactor vessel insulation system according to an embodiment of the disclosure (e.g., including a floating ring 10, a plurality of straps 12, and a plurality of segmented rings 14) that has been installed on a reactor vessel including a first layer of insulation material (not pictured) and a second layer of insulation material 20 surrounding the first layer of insulation material and circumscribing the reactor vessel. Generally, the types of insulation material used may be varied as desired and any insulation material as discussed herein above may be suitable for use in such embodiments. In some embodiments, the reactor vessel insulation system may include an outer jacket 22 (as depicted in FIG. 9), wherein the outer jacket 22 surrounds the first layer of insulation material 18 and the second layer of insulation material 20.


An “outer jacket” as used herein, refers to an outer covering that is wrapped around one or more insulation layers thereby surrounding the one or more insulation layers and circumscribing the reactor vessel to shield the insulation from external forces (e.g., moisture, wear, and mechanical damage). In some embodiments, the outer jacket may comprise a corrugated metal jacketing material and a plurality of springs. In some embodiments, the outer jacket may comprise a corrugated metal material, e.g., such as aluminum, stainless steel, zinc galvanized steel, polyvinyl chloride (PVC), fiberglass cloth and/or fabric materials, combinations thereof, and the like. Generally, the types of material used for the outer jacket may vary and may be selected based on mechanical, chemical, thermal, and/or moisture properties as well as based on the cost and desired aesthetics for the installation. In some embodiments, the outer jacket may comprise a plurality of springs (in addition to a metal “jacket” material). The plurality of springs may be characterized as compression and/or expansion springs, which allow for compression and/or expansion of the reactor vessel, the reactor vessel insulation system, and/or the one or more layers of insulation during operation of the reactor vessel. Such springs are generally constructed of metal.


In some embodiments, the insulation material (e.g., including the first layer of insulation material 18 and the second layer of insulation material 20) and/or the outer jacket 20 may comprise a plurality of insulation segments 48, each insulation segment being individually supported by a corresponding segment of the plurality of segmented rings 14. FIG. 10 depicts a close up cross-sectional view of a first layer of insulation material 18, a second layer of insulation material 20, and an outer jacket 22 surrounding the first and second layers of insulation material, each being supported by one of the plurality of segmented rings 14 of the reactor vessel insulation system. Generally, as noted herein above, the weight of the plurality of segmented rings is supported by the plurality of straps attached to the floating ring and the weight of the insulation materials and the outer jacket is supported by the plurality of segmented rings. It should be noted that the number of individual insulation segments 52 may vary based on the type of insulation used, the type of outer jacket, the number of vertical straps, the number of segmented horizontal rings, the number of segments in each horizontal ring, the number of outlet and/or inlet valves on the exterior of the reactor vessel, the size of the reactor vessel, and various other parameters. In some embodiments, for example, the number of individual insulation segments may be at least 4 individual segments, at least 8 individual segments, at least 16 individual segments, at least 32 individual segments, or more (e.g., about 4 to about 50 individual segments, such as about 8 to about 32 individual segments).


In general, it should be noted that the individual insulation segments 52 may be defined by the area between two of the plurality of straps 12 (e.g., which are adjacent to one another) and two of the plurality of segmented rings 14 (e.g., which are adjacent to one another), so as to form a four-sided rectangular shape in embodiments wherein the “vertical” straps and the “horizontal” rings are substantially perpendicular to one another). Such a configuration is not intended to be limiting, and in some embodiments, the individual insulation segments may be defined by one or more other shapes and/or may be irregularly shaped and/or may not be sized in accordance with the embodiments above. In some embodiments, each individual insulation segment may be independently, sized or shaped, based on the specifications of the reactor vessel.


The plurality of insulation segments 52 may advantageously be installed individually (e.g., one segment at a time) to allow for an easier, piece-by-piece installation process. In some embodiments, each insulation segment may be configured to be individually removable and/or replaceable for the purposes of maintenance and repair of the reactor vessel and/or maintenance and repair of the insulation material. In such embodiments, each insulation segment may advantageously be removed and repaired, without disturbing any of the remaining insulation segments. Generally, this ability to remove and repair individual insulation segments is a significant advantage over traditional insulation securement systems, because it can provide increased maintenance efficiency and cost reduction. Such cost reduction may be achieved by maintaining the integrity of the insulation material and the outer jacket material over time, for example, by replacing the typical wear and tear of such materials.



FIG. 11 illustrates a perspective view of the horizontally-positioned reactor vessel and the reactor vessel insulation system of the embodiment as depicted in FIG. 1 in a fully assembled configuration prior to transportation of the reactor vessel insulation system to the operation site. As shown, the reactor vessel and the reactor vessel insulation system have been completely encased by one or more layers of insulation material and an outer jacket.


The disclosure, in addition to providing insulation securement systems and reactor vessels insulated via such systems, provides corresponding methods of insulating a reactor vessel. In some embodiments, a method of insulating a vessel includes installing a reactor vessel insulation system according to an embodiment of the disclosure, and installing one or more layers of an insulation material circumscribing an outer shell of the reactor vessel. In some embodiments, the disclosure provides a method that includes providing a reactor vessel, associating a reactor vessel insulation system therewith, and installing one or more layers of an insulation material circumscribing an outer shell of the reactor vessel. In some embodiments, the method may further include installing an outer jacket surrounding the one or more layers of insulation material, e.g., an outer jacket as described herein above. As noted above, the one or more layers of insulation material and/or the outer jacket may be installed in individual insulation segments. In such embodiments, the methods disclosed herein provide that each insulation segment can be configured to be individually removable and/or replaceable, without disturbing any of the remaining insulation segments.


Advantageously, the disclosed systems and methods can provide, in some embodiments, for insulating a reactor vessel without welding any insulation support structure to the reactor vessel, e.g., such that post-weld heat treatment of the reactor vessel (following any PWHT associated with construction of the outer shell of the vessel itself) is not required. “Insulation support structure” as used herein refers to any structure, or component of that structure, used to support the weight of one or more insulation materials installed on a reactor vessel as described herein (e.g., such as a vessel insulation system as described herein, or any component thereof, including, but not limited to a floating ring, a plurality of straps, a plurality of segmented rings, a skirt portion, and the like). In one or more embodiments, such methods include positioning a floating ring on or near a top component of the vessel (e.g., proximate to and circumscribing a top nozzle of the vessel); attaching a plurality of straps to the floating ring extending downward from the floating ring a length along an outer shell of the vessel; selectively positioning a plurality of segmented rings along the length of the outer shell of vessel, wherein the segmented rings are attached to and supported by the plurality of straps; and installing an insulation material that circumscribes the outer shell of the vessel, the insulation material being supported by the segmented rings. In some embodiments, the method may further include installing the insulation material in individual insulation segments. Although the method for installing insulation and the securement system are described as sequential, the method steps can be conducted in varying order. Thus, in some embodiments, the plurality of straps can be attached to the floating ring prior to the positioning of the floating ring around the top nozzle. In some embodiments, one or more of the plurality of segmented rings may be connected or attached to the plurality of straps prior to connecting or attaching the plurality of straps to the floating ring.


As noted above, typical methods for insulating reactor vessel typically require post-weld heat treatment of the reactor vessel because support brackets commonly used must be welded to the exterior of the reactor vessel in order to support the weight of the insulation materials installed thereon. Such typical methods are generally not cost effective and can damage the integrity of the reactor vessel due to the amount of additional stress applied to the reactor vessel. By contrast, the insulation methods provided according to the disclosure herein alleviate this post-weld heat treatment process. Thus, in some embodiments, none of the above method steps include welding any material to the outer shell of the vessel. Instead, as noted above, the floating ring and the plurality of straps support the plurality of segmented rings forming the reactor vessel insulation system, and generally the weight of the insulation materials and the outer jacket are entirely supported by the reactor vessel insulation system provided herein.


Some aspects of the disclosure relate specifically to a method of maintenance and repair of an insulated reactor vessel. In one or more embodiments, a method of maintaining and repairing an insulate vessel includes providing a reactor vessel and a reactor vessel insulation system according to an embodiment of the disclosure, and selectively removing and replacing individual insulation segments based on a pre-determined level of deterioration and without disturbing any of the remaining insulation segments. The pre-determined level of deterioration may be based at least in part on an amount of deterioration that is expected before the next turnaround or maintenance period for the vessel.


Having the benefit of the teachings presented in the foregoing descriptions, many modifications and other embodiments of the disclosure set forth herein will come to mind to those skilled in the art to which these disclosures pertain. Therefore, it is to be understood that the disclosure is not to be limited to the specific embodiments disclosed and that modifications and other embodiments are intended to be included within the scope of the appended claims. Although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims
  • 1. A vessel insulation system, the system comprising: a floating ring sized to circumscribe a top nozzle of a vessel;a plurality of straps connected to the floating ring, the plurality of straps extending downward from the floating ring and positioned to run along a length of the outer shell of the vessel; anda plurality of segmented rings connected to the plurality of straps and positioned to circumscribe the outer shell of the vessel, each of the plurality of segmented rings having a ledge configured to vertically support an insulation material when circumscribing the outer shell of the vessel.
  • 2. The vessel insulation system of claim 1, wherein the floating ring, the plurality of straps, and the plurality of segmented rings each independently comprises a material selected from the group consisting of metals, metal alloys, or any combination thereof.
  • 3. The vessel insulation system of claim 1, wherein the floating ring, the plurality of straps, and the plurality of segmented rings each comprises a stainless steel material.
  • 4. The vessel insulation system of claim 1, wherein the plurality of straps is positioned substantially perpendicular to the ledge of the plurality of segmented rings.
  • 5. The vessel insulation system of claim 1, wherein the floating ring, the plurality of straps, and the plurality of segmented rings have not been welded to the outer shell of the vessel.
  • 6. The vessel insulation system of claim 1, wherein the plurality of segmented rings is supported by the plurality of straps.
  • 7. An insulated vessel comprising: a vessel;a vessel insulation system comprising: a floating ring sized to circumscribe a top nozzle of the vessel,a plurality of straps connected to the floating ring, the plurality of straps extending from the floating ring and positioned to run along a length of the outer shell of the vessel, anda plurality of segmented rings connected to the plurality of straps and positioned to circumscribe the outer shell of the vessel, each of the plurality of segmented rings having a ledge circumscribing the outer shell of the vessel; andan insulation material comprising a plurality of insulation segments, each insulation segment individually and vertically supported by the ledge of a corresponding segment of the plurality of segmented rings.
  • 8. The insulated vessel of claim 7, wherein each insulation segment is configured to be individually removable or replaceable, without disturbing any remaining insulation segments when being removed or replaced.
  • 9. The insulated vessel of claim 7, wherein the insulation material comprises a first layer of insulation, a second layer of insulation, and an outer jacket surrounding the first and second layers of insulation.
  • 10. The insulated vessel of claim 9, wherein the outer jacket comprises a corrugated metal jacketing material and a plurality of springs.
  • 11. The insulated vessel of claim 7, further comprising a skirt portion positioned proximate a base portion of the vessel.
  • 12. The insulated vessel of claim 11, wherein the skirt portion comprises a plurality of springs connected to the plurality of straps, and wherein the plurality of springs is configured to allow for vertical expansion of the vessel insulation system during operation.
  • 13. A vessel insulation system comprising: a floating ring sized to circumscribe a top nozzle of a vessel;a plurality of straps connected to the floating ring, the plurality of straps extending from the floating ring and positioned to run along a length of an outer shell of the vessel; anda plurality of segmented rings connected to the plurality of straps and positioned to circumscribe the outer shell of the vessel, each of the plurality of segmented rings having a vertically facing support surface to vertically support a weight of a segment of insulation material when positioned thereon and along the outer shell.
  • 14. The vessel insulation system of claim 13, wherein the vertically facing support surface extends outward from the outer shell of the vessel.
  • 15. The vessel insulation system of claim 14, wherein the vertically facing support surface of each of the plurality of segmented rings is positioned substantially perpendicular to the plurality of straps.
  • 16. The vessel insulation system of claim 14, wherein the vertically facing support surface of each of the plurality of segmented rings further is positioned to extend radially outward from the outer shell relative to a longitudinal axis of the vessel.
  • 17. The vessel insulation system of claim 13, wherein each of the plurality of segmented rings is fastened to one or more of the plurality of straps via one or more curved plates.
  • 18. The vessel insulation system of claim 13, wherein the plurality of segmented rings is suspended by the plurality of straps.
US Referenced Citations (808)
Number Name Date Kind
981434 Lander Jan 1911 A
1526301 Stevens Feb 1925 A
1572922 Govers et al. Feb 1926 A
1867143 Fohl Jul 1932 A
2401570 Koehler Jun 1946 A
2498442 Morey Feb 1950 A
2516097 Woodham et al. Jul 1950 A
2686728 Wallace Aug 1954 A
2691621 Gagle Oct 1954 A
2691773 Lichtenberger Oct 1954 A
2731282 Mcmanus et al. Jan 1956 A
2740616 Walden Apr 1956 A
2792908 Glanzer May 1957 A
2804165 Blomgren Aug 1957 A
2867913 Faucher Jan 1959 A
2888239 Slemmons May 1959 A
2909482 Williams et al. Oct 1959 A
2925144 Kroll Feb 1960 A
2963423 Birchfield Dec 1960 A
3063681 Duguid Nov 1962 A
3070990 Stanley Jan 1963 A
3109481 Yahnke Nov 1963 A
3167305 Backx et al. Jan 1965 A
3188184 Rice et al. Jun 1965 A
3199876 Magos et al. Aug 1965 A
3203460 Kuhne Aug 1965 A
3279441 Lippert et al. Oct 1966 A
3307574 Anderson Mar 1967 A
3364134 Hamblin Jan 1968 A
3400049 Wolfe Sep 1968 A
3545411 Vollradt Dec 1970 A
3660057 Ilnyckyj May 1972 A
3719027 Salka Mar 1973 A
3720601 Coonradt Mar 1973 A
3771638 Schneider et al. Nov 1973 A
3775294 Peterson Nov 1973 A
3795607 Adams Mar 1974 A
3838036 Stine et al. Sep 1974 A
3839484 Zimmerman, Jr. Oct 1974 A
3840209 James Oct 1974 A
3841144 Baldwin Oct 1974 A
3854843 Penny Dec 1974 A
3874399 Ishihara Apr 1975 A
3901951 Nishizaki Aug 1975 A
3906780 Baldwin Sep 1975 A
3912307 Totman Oct 1975 A
3928172 Davis et al. Dec 1975 A
3937660 Yates et al. Feb 1976 A
4006075 Luckenbach Feb 1977 A
4017214 Smith Apr 1977 A
4066425 Nett Jan 1978 A
4085078 McDonald Apr 1978 A
4144759 Slowik Mar 1979 A
4149756 Tackett Apr 1979 A
4151003 Smith et al. Apr 1979 A
4167492 Varady Sep 1979 A
4176052 Bruce et al. Nov 1979 A
4217116 Seever Aug 1980 A
4260068 McCarthy et al. Apr 1981 A
4299687 Myers et al. Nov 1981 A
4302324 Chen et al. Nov 1981 A
4308968 Thiltgen et al. Jan 1982 A
4328947 Reimpell et al. May 1982 A
4332671 Boyer Jun 1982 A
4340204 Heard Jul 1982 A
4353812 Lomas et al. Oct 1982 A
4357603 Roach et al. Nov 1982 A
4392870 Chieffo et al. Jul 1983 A
4404095 Haddad et al. Sep 1983 A
4422925 Williams et al. Dec 1983 A
4434044 Busch et al. Feb 1984 A
4439533 Lomas et al. Mar 1984 A
4468975 Sayles et al. Sep 1984 A
4482451 Kemp Nov 1984 A
4495063 Walters et al. Jan 1985 A
4539012 Ohzeki et al. Sep 1985 A
4554313 Hagenbach et al. Nov 1985 A
4554799 Pallanch Nov 1985 A
4570942 Diehl et al. Feb 1986 A
4601303 Jensen Jul 1986 A
4615792 Greenwood Oct 1986 A
4621062 Stewart et al. Nov 1986 A
4622210 Hirschberg et al. Nov 1986 A
4624771 Lane et al. Nov 1986 A
4647313 Clementoni Mar 1987 A
4654748 Rees Mar 1987 A
4661241 Dabkowski et al. Apr 1987 A
4673490 Subramanian et al. Jun 1987 A
4674337 Jonas Jun 1987 A
4684759 Lam Aug 1987 A
4686027 Bonilla et al. Aug 1987 A
4728348 Nelson et al. Mar 1988 A
4733888 Toelke Mar 1988 A
4741819 Robinson et al. May 1988 A
4764347 Milligan Aug 1988 A
4765631 Kohnen et al. Aug 1988 A
4771176 Scheifer et al. Sep 1988 A
4816137 Swint et al. Mar 1989 A
4820404 Owen Apr 1989 A
4824016 Cody et al. Apr 1989 A
4844133 von Meyerinck et al. Jul 1989 A
4844927 Morris et al. Jul 1989 A
4849182 Luetzelschwab Jul 1989 A
4854855 Rajewski Aug 1989 A
4875994 Haddad et al. Oct 1989 A
4877513 Haire et al. Oct 1989 A
4798463 Koshi Nov 1989 A
4901751 Story et al. Feb 1990 A
4914249 Benedict Apr 1990 A
4916938 Aikin et al. Apr 1990 A
4917790 Owen Apr 1990 A
4923834 Lomas May 1990 A
4940900 Lambert Jul 1990 A
4957511 Ljusberg-Wahren Sep 1990 A
4960503 Haun et al. Oct 1990 A
4963745 Maggard Oct 1990 A
4972867 Ruesch Nov 1990 A
5000841 Owen Mar 1991 A
5002459 Swearingen et al. Mar 1991 A
5008653 Kidd et al. Apr 1991 A
5009768 Galiasso et al. Apr 1991 A
5013537 Patarin et al. May 1991 A
5022266 Cody et al. Jun 1991 A
5032154 Wright Jul 1991 A
5034115 Avidan Jul 1991 A
5045177 Cooper et al. Sep 1991 A
5050603 Stokes et al. Sep 1991 A
5053371 Williamson Oct 1991 A
5056758 Bramblet Oct 1991 A
5059305 Sapre Oct 1991 A
5061467 Johnson et al. Oct 1991 A
5066049 Staples Nov 1991 A
5076910 Rush Dec 1991 A
5082985 Crouzet et al. Jan 1992 A
5096566 Dawson et al. Mar 1992 A
5097677 Holtzapple Mar 1992 A
5111882 Tang et al. May 1992 A
5112357 Bjerklund May 1992 A
5114562 Haun et al. May 1992 A
5115686 Walker et al. May 1992 A
5121337 Brown Jun 1992 A
5128109 Owen Jul 1992 A
5128292 Lomas Jul 1992 A
5129624 Icenhower et al. Jul 1992 A
5138891 Johnson Aug 1992 A
5139649 Owen et al. Aug 1992 A
5145785 Maggard et al. Sep 1992 A
5149261 Suwa et al. Sep 1992 A
5154558 McCallion Oct 1992 A
5160426 Avidan Nov 1992 A
5170911 Della Riva Dec 1992 A
5174250 Lane Dec 1992 A
5174345 Kesterman et al. Dec 1992 A
5178363 Icenhower et al. Jan 1993 A
5196110 Swart et al. Mar 1993 A
5201850 Lenhardt et al. Apr 1993 A
5203370 Block et al. Apr 1993 A
5211838 Staubs et al. May 1993 A
5212129 Lomas May 1993 A
5221463 Kamienski et al. Jun 1993 A
5223714 Maggard Jun 1993 A
5225679 Clark et al. Jul 1993 A
5230498 Wood et al. Jul 1993 A
5235999 Lindquist et al. Aug 1993 A
5236765 Cordia et al. Aug 1993 A
5243546 Maggard Sep 1993 A
5246860 Hutchins et al. Sep 1993 A
5246868 Busch et al. Sep 1993 A
5248408 Owen Sep 1993 A
5250807 Sontvedt Oct 1993 A
5257530 Beattie et al. Nov 1993 A
5258115 Heck et al. Nov 1993 A
5258117 Kolstad et al. Nov 1993 A
5262645 Lambert et al. Nov 1993 A
5263682 Covert et al. Nov 1993 A
5301560 Anderson et al. Apr 1994 A
5302294 Schubert Apr 1994 A
5316448 Ziegler et al. May 1994 A
5320671 Schilling Jun 1994 A
5326074 Spock et al. Jul 1994 A
5328505 Schilling Jul 1994 A
5328591 Raterman Jul 1994 A
5332492 Maurer et al. Jul 1994 A
5338439 Owen et al. Aug 1994 A
5348645 Maggard et al. Sep 1994 A
5349188 Maggard Sep 1994 A
5349189 Maggard Sep 1994 A
5354451 Goldstein et al. Oct 1994 A
5354453 Bhatia Oct 1994 A
5361643 Boyd et al. Nov 1994 A
5362965 Maggard Nov 1994 A
5370146 King et al. Dec 1994 A
5370790 Maggard et al. Dec 1994 A
5372270 Rosenkrantz Dec 1994 A
5372352 Smith et al. Dec 1994 A
5381002 Morrow et al. Jan 1995 A
5388805 Bathrick et al. Feb 1995 A
5389232 Adewuyi et al. Feb 1995 A
5404015 Chimenti et al. Apr 1995 A
5415025 Bartman et al. May 1995 A
5416323 Hoots et al. May 1995 A
5417843 Swart et al. May 1995 A
5417846 Renard May 1995 A
5423446 Johnson Jun 1995 A
5431067 Anderson et al. Jul 1995 A
5433120 Boyd et al. Jul 1995 A
5435436 Manley et al. Jul 1995 A
5443716 Anderson et al. Aug 1995 A
5446681 Gethner et al. Aug 1995 A
5452232 Espinosa et al. Sep 1995 A
RE35046 Hettinger et al. Oct 1995 E
5459677 Kowalski et al. Oct 1995 A
5472875 Monticello Dec 1995 A
5474607 Holleran Dec 1995 A
5475612 Espinosa et al. Dec 1995 A
5476117 Pakula Dec 1995 A
5490085 Lambert et al. Feb 1996 A
5492617 Trimble et al. Feb 1996 A
5494079 Tiedemann Feb 1996 A
5507326 Cadman et al. Apr 1996 A
5510265 Monticello Apr 1996 A
5516969 Krasznai et al. May 1996 A
5532487 Brearley et al. Jul 1996 A
5540893 English Jul 1996 A
5549814 Zinke Aug 1996 A
5556222 Chen Sep 1996 A
5559295 Sheryll Sep 1996 A
5560509 Laverman et al. Oct 1996 A
5569808 Cansell et al. Oct 1996 A
5573032 Lenz et al. Nov 1996 A
5584985 Lomas Dec 1996 A
5596196 Cooper et al. Jan 1997 A
5600134 Ashe et al. Feb 1997 A
5647961 Lofland Jul 1997 A
5652145 Cody et al. Jul 1997 A
5675071 Cody et al. Oct 1997 A
5684580 Cooper et al. Nov 1997 A
5699269 Ashe et al. Dec 1997 A
5699270 Ashe et al. Dec 1997 A
5712481 Welch et al. Jan 1998 A
5712797 Descales et al. Jan 1998 A
5713401 Weeks Feb 1998 A
5716055 Wilkinson et al. Feb 1998 A
5717209 Bigman et al. Feb 1998 A
5740073 Bages et al. Apr 1998 A
5744024 Sullivan, III et al. Apr 1998 A
5744702 Roussis et al. Apr 1998 A
5746906 McHenry et al. May 1998 A
5758514 Genung et al. Jun 1998 A
5763883 Descales et al. Jun 1998 A
5800697 Lengemann Sep 1998 A
5817517 Perry et al. Oct 1998 A
5822058 Adler-Golden et al. Oct 1998 A
5834539 Krivohlavek Nov 1998 A
5837130 Crossland Nov 1998 A
5853455 Gibson Dec 1998 A
5856869 Cooper et al. Jan 1999 A
5858207 Lomas Jan 1999 A
5858210 Richardson Jan 1999 A
5858212 Darcy Jan 1999 A
5861228 Descales et al. Jan 1999 A
5862060 Murray, Jr. Jan 1999 A
5865441 Orlowski Feb 1999 A
5883363 Motoyoshi et al. Mar 1999 A
5885439 Glover Mar 1999 A
5892228 Cooper et al. Apr 1999 A
5895506 Cook et al. Apr 1999 A
5916433 Tejada et al. Jun 1999 A
5919354 Bartek Jul 1999 A
5935415 Haizmann et al. Aug 1999 A
5940176 Knapp Aug 1999 A
5972171 Ross et al. Oct 1999 A
5979491 Gonsior Nov 1999 A
5997723 Wiehe et al. Dec 1999 A
6015440 Noureddini Jan 2000 A
6025305 Aldrich et al. Feb 2000 A
6026841 Kozik Feb 2000 A
6047602 Lynnworth Apr 2000 A
6056005 Piotrowski et al. May 2000 A
6062274 Pettesch May 2000 A
6063263 Palmas May 2000 A
6063265 Chiyoda et al. May 2000 A
6070128 Descales et al. May 2000 A
6072576 McDonald et al. Jun 2000 A
6076864 Levivier et al. Jun 2000 A
6087662 Wilt et al. Jul 2000 A
6093867 Ladwig et al. Jul 2000 A
6099607 Haslebacher Aug 2000 A
6099616 Jenne et al. Aug 2000 A
6102655 Kreitmeier Aug 2000 A
6105441 Conner et al. Aug 2000 A
6107631 He Aug 2000 A
6117812 Gao et al. Sep 2000 A
6130095 Shearer Oct 2000 A
6140647 Welch et al. Oct 2000 A
6153091 Sechrist et al. Nov 2000 A
6155294 Cornford et al. Dec 2000 A
6162644 Choi et al. Dec 2000 A
6165350 Lokhandwala et al. Dec 2000 A
6169218 Hearn Jan 2001 B1
6171052 Aschenbruck et al. Jan 2001 B1
6174501 Noureddini Jan 2001 B1
6190535 Kalnes et al. Feb 2001 B1
6203585 Majerczak Mar 2001 B1
6235104 Chattopadhyay et al. May 2001 B1
6258987 Schmidt et al. Jul 2001 B1
6271518 Boehm et al. Aug 2001 B1
6274785 Gore Aug 2001 B1
6284128 Glover et al. Sep 2001 B1
6296812 Gauthier et al. Oct 2001 B1
6312586 Kalnes et al. Nov 2001 B1
6315815 Spadaccini Nov 2001 B1
6324895 Chitnis et al. Dec 2001 B1
6328348 Cornford et al. Dec 2001 B1
6331436 Richardson et al. Dec 2001 B1
6348074 Wenzel Feb 2002 B2
6350371 Lokhandwala et al. Feb 2002 B1
6368495 Kocal et al. Apr 2002 B1
6382633 Hashiguchi et al. May 2002 B1
6390673 Camburn May 2002 B1
6395228 Maggard et al. May 2002 B1
6398518 Ingistov Jun 2002 B1
6399800 Haas et al. Jun 2002 B1
6420181 Novak Jul 2002 B1
6422035 Phillippe Jul 2002 B1
6435279 Howe et al. Aug 2002 B1
6446446 Cowans Sep 2002 B1
6446729 Bixenman et al. Sep 2002 B1
6451197 Kalnes Sep 2002 B1
6454935 Lesieur et al. Sep 2002 B1
6467303 Ross Oct 2002 B2
6482762 Ruffin et al. Nov 2002 B1
6503460 Miller et al. Jan 2003 B1
6528047 Arif et al. Mar 2003 B2
6540797 Scott et al. Apr 2003 B1
6558531 Steffens et al. May 2003 B2
6589323 Korin Jul 2003 B1
6609888 Ingistov Aug 2003 B1
6622490 Ingistov Sep 2003 B2
6644935 Ingistov Nov 2003 B2
6660895 Brunet et al. Dec 2003 B1
6672858 Benson et al. Jan 2004 B1
6733232 Ingistov et al. May 2004 B2
6733237 Ingistov May 2004 B2
6736961 Plummer et al. May 2004 B2
6740226 Mehra et al. May 2004 B2
6772581 Ojiro et al. Aug 2004 B2
6772741 Pittel et al. Aug 2004 B1
6814941 Naunheimer et al. Nov 2004 B1
6824673 Ellis et al. Nov 2004 B1
6827841 Kiser et al. Dec 2004 B2
6835223 Walker et al. Dec 2004 B2
6841133 Niewiedzial et al. Jan 2005 B2
6842702 Haaland et al. Jan 2005 B2
6854346 Nimberger Feb 2005 B2
6858128 Hoehn et al. Feb 2005 B1
6866771 Lomas et al. Mar 2005 B2
6869521 Lomas Mar 2005 B2
6897071 Sonbul May 2005 B2
6962484 Brandl et al. Nov 2005 B2
7013718 Ingistov et al. Mar 2006 B2
7035767 Archer et al. Apr 2006 B2
7048254 Laurent et al. May 2006 B2
7074321 Kalnes Jul 2006 B1
7078005 Smith et al. Jul 2006 B2
7087153 Kalnes Aug 2006 B1
7156123 Welker et al. Jan 2007 B2
7172686 Ji et al. Feb 2007 B1
7174715 Armitage et al. Feb 2007 B2
7194369 Lundstedt et al. Mar 2007 B2
7213413 Battiste et al. May 2007 B2
7225840 Craig et al. Jun 2007 B1
7228250 Naiman et al. Jun 2007 B2
7244350 Kar et al. Jul 2007 B2
7252755 Kiser et al. Aug 2007 B2
7255531 Ingistov Aug 2007 B2
7260499 Watzke et al. Aug 2007 B2
7291257 Ackerson et al. Nov 2007 B2
7332132 Hedrick et al. Feb 2008 B2
7404411 Welch et al. Jul 2008 B2
7419583 Nieskens et al. Sep 2008 B2
7445936 O'Connor et al. Nov 2008 B2
7459081 Koenig Dec 2008 B2
7485801 Pulter et al. Feb 2009 B1
7487955 Buercklin Feb 2009 B1
7501285 Triche et al. Mar 2009 B1
7551420 Cerqueira et al. Jun 2009 B2
7571765 Themig Aug 2009 B2
7637970 Fox et al. Dec 2009 B1
7669653 Craster et al. Mar 2010 B2
7682501 Soni et al. Mar 2010 B2
7686280 Lowery Mar 2010 B2
7857964 Mashiko et al. Dec 2010 B2
7866346 Walters Jan 2011 B1
7895011 Youssefi et al. Feb 2011 B2
7914601 Farr et al. Mar 2011 B2
7931803 Buchanan Apr 2011 B2
7932424 Fujimoto et al. Apr 2011 B2
7939335 Triche et al. May 2011 B1
7981361 Bacik Jul 2011 B2
7988753 Fox et al. Aug 2011 B1
7993514 Schlueter Aug 2011 B2
8007662 Lomas et al. Aug 2011 B2
8017910 Sharpe Sep 2011 B2
8029662 Varma et al. Oct 2011 B2
8037938 Jardim De Azevedo et al. Oct 2011 B2
8038774 Peng Oct 2011 B2
8064052 Feitisch et al. Nov 2011 B2
8066867 Dziabala Nov 2011 B2
8080426 Moore et al. Dec 2011 B1
8127845 Assal Mar 2012 B2
8193401 McGehee et al. Jun 2012 B2
8236566 Carpenter et al. Aug 2012 B2
8286673 Recker et al. Oct 2012 B1
8354065 Sexton Jan 2013 B1
8360118 Fleischer et al. Jan 2013 B2
8370082 De Peinder et al. Feb 2013 B2
8388830 Sohn et al. Mar 2013 B2
8389285 Carpenter et al. Mar 2013 B2
8397803 Crabb et al. Mar 2013 B2
8397820 Fehr et al. Mar 2013 B2
8404103 Dziabala Mar 2013 B2
8434800 LeBlanc May 2013 B1
8481942 Mertens Jul 2013 B2
8506656 Turocy Aug 2013 B1
8518131 Mattingly et al. Aug 2013 B2
8524180 Canari et al. Sep 2013 B2
8569068 Carpenter et al. Oct 2013 B2
8579139 Sablak Nov 2013 B1
8591814 Hodges Nov 2013 B2
8609048 Beadle Dec 2013 B1
8647415 De Haan et al. Feb 2014 B1
8670945 van Schie Mar 2014 B2
8685232 Mandal et al. Apr 2014 B2
8735820 Mertens May 2014 B2
8753502 Sexton et al. Jun 2014 B1
8764970 Moore et al. Jul 2014 B1
8778823 Oyekan et al. Jul 2014 B1
8781757 Farquharson et al. Jul 2014 B2
8829258 Gong et al. Sep 2014 B2
8916041 Van Den Berg et al. Dec 2014 B2
8932458 Gianzon et al. Jan 2015 B1
8986402 Kelly Mar 2015 B2
8987537 Droubi et al. Mar 2015 B1
8999011 Stern et al. Apr 2015 B2
8999012 Kelly et al. Apr 2015 B2
9011674 Milam et al. Apr 2015 B2
9057035 Kraus et al. Jun 2015 B1
9097423 Kraus et al. Aug 2015 B2
9109176 Stern et al. Aug 2015 B2
9109177 Freel et al. Aug 2015 B2
9138738 Glover et al. Sep 2015 B1
9216376 Liu et al. Dec 2015 B2
9272241 Königsson Mar 2016 B2
9273867 Buzinski et al. Mar 2016 B2
9279748 Hughes et al. Mar 2016 B1
9289715 Høy-Petersen et al. Mar 2016 B2
9315403 Laur et al. Apr 2016 B1
9371493 Oyekan Jun 2016 B1
9371494 Oyekan et al. Jun 2016 B2
9377340 Hägg Jun 2016 B2
9393520 Gomez Jul 2016 B2
9410102 Eaton et al. Aug 2016 B2
9428695 Narayanaswamy et al. Aug 2016 B2
9458396 Weiss et al. Oct 2016 B2
9487718 Kraus et al. Nov 2016 B2
9499758 Droubi et al. Nov 2016 B2
9500300 Daigle Nov 2016 B2
9506649 Rennie et al. Nov 2016 B2
9580662 Moore Feb 2017 B1
9624448 Joo et al. Apr 2017 B2
9650580 Merdrignac et al. May 2017 B2
9657241 Craig et al. May 2017 B2
9662597 Formoso May 2017 B1
9663729 Baird et al. May 2017 B2
9665693 Saeger et al. May 2017 B2
9709545 Mertens Jul 2017 B2
9757686 Peng Sep 2017 B2
9789290 Forsell Oct 2017 B2
9803152 Kar et al. Oct 2017 B2
9834731 Weiss et al. Dec 2017 B2
9840674 Weiss et al. Dec 2017 B2
9873080 Richardson Jan 2018 B2
9878300 Norling Jan 2018 B2
9890907 Highfield et al. Feb 2018 B1
9891198 Sutan Feb 2018 B2
9895649 Brown et al. Feb 2018 B2
9896630 Weiss et al. Feb 2018 B2
9914094 Jenkins et al. Mar 2018 B2
9920270 Robinson et al. Mar 2018 B2
9925486 Botti Mar 2018 B1
9982788 Maron May 2018 B1
10047299 Rubin-Pitel et al. Aug 2018 B2
10087397 Phillips et al. Oct 2018 B2
10099175 Takashashi et al. Oct 2018 B2
10150078 Komatsu et al. Dec 2018 B2
10228708 Lambert et al. Mar 2019 B2
10239034 Sexton Mar 2019 B1
10253269 Cantley et al. Apr 2019 B2
10266779 Weiss et al. Apr 2019 B2
10295521 Mertens May 2019 B2
10308884 Klussman Jun 2019 B2
10316263 Rubin-Pitel et al. Jun 2019 B2
10384157 Balcik Aug 2019 B2
10435339 Larsen et al. Oct 2019 B2
10435636 Johnson et al. Oct 2019 B2
10443000 Lomas Oct 2019 B2
10443006 Fruchey et al. Oct 2019 B1
10457881 Droubi et al. Oct 2019 B2
10479943 Liu et al. Nov 2019 B1
10494579 Wrigley et al. Dec 2019 B2
10495570 Owen et al. Dec 2019 B2
10501699 Robinson et al. Dec 2019 B2
10526547 Larsen et al. Jan 2020 B2
10533141 Moore et al. Jan 2020 B2
10563130 Narayanaswamy et al. Feb 2020 B2
10563132 Moore et al. Feb 2020 B2
10563133 Moore et al. Feb 2020 B2
10570078 Larsen et al. Feb 2020 B2
10577551 Kraus et al. Mar 2020 B2
10584287 Klussman et al. Mar 2020 B2
10604709 Moore et al. Mar 2020 B2
10640719 Freel et al. May 2020 B2
10655074 Moore et al. May 2020 B2
10696906 Cantley et al. Jun 2020 B2
10808184 Moore Oct 2020 B1
10836966 Moore et al. Nov 2020 B2
10876053 Klussman et al. Dec 2020 B2
10954456 Moore et al. Mar 2021 B2
10961468 Moore et al. Mar 2021 B2
10962259 Shah et al. Mar 2021 B2
10968403 Moore Apr 2021 B2
11021662 Moore et al. Jun 2021 B2
11098255 Larsen et al. Aug 2021 B2
11124714 Eller et al. Sep 2021 B2
11136513 Moore et al. Oct 2021 B2
11164406 Meroux et al. Nov 2021 B2
11168270 Moore Nov 2021 B1
11175039 Lochschmied et al. Nov 2021 B2
11203719 Cantley et al. Dec 2021 B2
11203722 Moore et al. Dec 2021 B2
11214741 Davdov et al. Jan 2022 B2
11306253 Timken et al. Apr 2022 B2
11319262 Wu et al. May 2022 B2
11352577 Woodchick et al. Jun 2022 B2
11352578 Eller et al. Jun 2022 B2
11384301 Eller et al. Jul 2022 B2
11421162 Pradeep et al. Aug 2022 B2
11460478 Sugiyama et al. Oct 2022 B2
11467172 Mitzel et al. Oct 2022 B1
11542441 Larsen et al. Jan 2023 B2
11578638 Thobe Feb 2023 B2
11634647 Cantley et al. Apr 2023 B2
11667858 Eller et al. Jun 2023 B2
11692141 Larsen et al. Jul 2023 B2
11702600 Sexton et al. Jul 2023 B2
11715950 Miller et al. Aug 2023 B2
11720526 Miller et al. Aug 2023 B2
11802257 Short et al. Oct 2023 B2
11835450 Bledsoe, Jr. et al. Dec 2023 B2
11860069 Bledsoe, Jr. Jan 2024 B2
11891581 Cantley et al. Feb 2024 B2
11898109 Sexton et al. Feb 2024 B2
11905468 Sexton et al. Feb 2024 B2
11905479 Eller et al. Feb 2024 B2
11906423 Bledsoe, Jr. et al. Feb 2024 B2
11920096 Woodchick et al. Mar 2024 B2
11921035 Bledsoe, Jr. et al. Mar 2024 B2
11970664 Larsen Apr 2024 B2
20020014068 Mittricker et al. Feb 2002 A1
20020061633 Marsh May 2002 A1
20020170431 Chang et al. Nov 2002 A1
20030041518 Wallace et al. Mar 2003 A1
20030113598 Chow et al. Jun 2003 A1
20030188536 Mittricker Oct 2003 A1
20030194322 Brandl et al. Oct 2003 A1
20040010170 Vickers Jan 2004 A1
20040033617 Sonbul Feb 2004 A1
20040040201 Roos et al. Mar 2004 A1
20040079431 Kissell Apr 2004 A1
20040121472 Nemana et al. Jun 2004 A1
20040129605 Goldstein et al. Jul 2004 A1
20040139858 Entezarian Jul 2004 A1
20040154610 Hopp et al. Aug 2004 A1
20040232050 Martin et al. Nov 2004 A1
20040251170 Chiyoda et al. Dec 2004 A1
20050042151 Alward et al. Feb 2005 A1
20050088653 Coates et al. Apr 2005 A1
20050123466 Sullivan Jun 2005 A1
20050139516 Nieskens et al. Jun 2005 A1
20050143609 Wolf et al. Jun 2005 A1
20050150820 Guo Jul 2005 A1
20050229777 Brown Oct 2005 A1
20060037237 Copeland et al. Feb 2006 A1
20060042701 Jansen Mar 2006 A1
20060049082 Niccum et al. Mar 2006 A1
20060091059 Barbaro May 2006 A1
20060162243 Wolf Jul 2006 A1
20060169305 Jansen et al. Aug 2006 A1
20060210456 Bruggendick Sep 2006 A1
20060169064 Anschutz et al. Oct 2006 A1
20060220383 Erickson Oct 2006 A1
20070003450 Burdett et al. Jan 2007 A1
20070082407 Little, III Apr 2007 A1
20070112258 Soyemi et al. May 2007 A1
20070202027 Walker et al. Aug 2007 A1
20070212271 Kennedy et al. Sep 2007 A1
20070212790 Welch et al. Sep 2007 A1
20070215521 Havlik et al. Sep 2007 A1
20070243556 Wachs Oct 2007 A1
20070283812 Liu et al. Dec 2007 A1
20080078693 Sexton et al. Apr 2008 A1
20080078694 Sexton et al. Apr 2008 A1
20080078695 Sexton et al. Apr 2008 A1
20080081844 Shires et al. Apr 2008 A1
20080087592 Buchanan Apr 2008 A1
20080092436 Seames et al. Apr 2008 A1
20080109107 Stefani et al. May 2008 A1
20080149486 Greaney et al. Jun 2008 A1
20080156696 Niccum et al. Jul 2008 A1
20080207974 McCoy et al. Aug 2008 A1
20080211505 Trygstad et al. Sep 2008 A1
20080247942 Kandziora et al. Oct 2008 A1
20080253936 Abhari Oct 2008 A1
20090151250 Agrawal Jun 2009 A1
20090152454 Nelson et al. Jun 2009 A1
20090158824 Brown et al. Jun 2009 A1
20100127217 Lightowlers et al. May 2010 A1
20100131247 Carpenter et al. May 2010 A1
20100166602 Bacik Jul 2010 A1
20100243235 Caldwell et al. Sep 2010 A1
20100301044 Sprecher Dec 2010 A1
20100318118 Forsell Dec 2010 A1
20110147267 Kaul et al. Jun 2011 A1
20110155646 Karas et al. Jun 2011 A1
20110175032 Günther Jul 2011 A1
20110186307 Derby Aug 2011 A1
20110237856 Mak Sep 2011 A1
20110247835 Crabb Oct 2011 A1
20110277377 Novak et al. Nov 2011 A1
20110299076 Feitisch et al. Dec 2011 A1
20110319698 Sohn et al. Dec 2011 A1
20120012342 Wilkin et al. Jan 2012 A1
20120125813 Bridges et al. May 2012 A1
20120125814 Sanchez et al. May 2012 A1
20120131853 Thacker et al. May 2012 A1
20120222550 Ellis Sep 2012 A1
20120272715 Kriel et al. Nov 2012 A1
20130014431 Jin et al. Jan 2013 A1
20130109895 Novak et al. May 2013 A1
20130112313 Donnelly et al. May 2013 A1
20130125619 Wang May 2013 A1
20130186739 Trompiz Jul 2013 A1
20130192339 Kriel et al. Aug 2013 A1
20130225897 Candelon et al. Aug 2013 A1
20130288355 DeWitte et al. Oct 2013 A1
20130334027 Winter et al. Dec 2013 A1
20130342203 Trygstad et al. Dec 2013 A1
20140019052 Zaeper et al. Jan 2014 A1
20140024873 De Haan et al. Jan 2014 A1
20140041150 Sjoberg Feb 2014 A1
20140121428 Wang et al. May 2014 A1
20140229010 Farquharson et al. Aug 2014 A1
20140296057 Ho et al. Oct 2014 A1
20140299515 Weiss et al. Oct 2014 A1
20140311953 Chimenti et al. Oct 2014 A1
20140316176 Fjare et al. Oct 2014 A1
20140332444 Weiss et al. Nov 2014 A1
20140353138 Amale et al. Dec 2014 A1
20140374322 Venkatesh Dec 2014 A1
20150005547 Freel et al. Jan 2015 A1
20150005548 Freel et al. Jan 2015 A1
20150034570 Andreussi Feb 2015 A1
20150034599 Hunger et al. Feb 2015 A1
20150057477 Ellig et al. Feb 2015 A1
20150071028 Glanville Mar 2015 A1
20150122704 Kumar et al. May 2015 A1
20150166426 Wegerer et al. Jun 2015 A1
20150240167 Kulprathipanja et al. Aug 2015 A1
20150240174 Bru et al. Aug 2015 A1
20150337207 Chen et al. Nov 2015 A1
20150337225 Droubi et al. Nov 2015 A1
20150337226 Tardif et al. Nov 2015 A1
20150353851 Buchanan Dec 2015 A1
20160045918 Lapham Feb 2016 A1
20160090539 Frey et al. Mar 2016 A1
20160122662 Weiss et al. May 2016 A1
20160122666 Weiss et al. May 2016 A1
20160160139 Dawe et al. Jun 2016 A1
20160168481 Ray et al. Jun 2016 A1
20160175749 Suda Jun 2016 A1
20160244677 Froehle Aug 2016 A1
20160298851 Brickwood et al. Oct 2016 A1
20160312127 Frey et al. Oct 2016 A1
20160312130 Majcher et al. Oct 2016 A1
20170009163 Kraus et al. Jan 2017 A1
20170115190 Hall et al. Apr 2017 A1
20170131728 Lambert et al. May 2017 A1
20170151526 Cole Jun 2017 A1
20170183575 Rubin-Pitel et al. Jun 2017 A1
20170198910 Garg Jul 2017 A1
20170226434 Zimmerman Aug 2017 A1
20170233670 Feustel et al. Aug 2017 A1
20170269559 Trygstad Sep 2017 A1
20180017469 English et al. Jan 2018 A1
20180037308 Lee et al. Feb 2018 A1
20180080958 Marchese et al. Mar 2018 A1
20180119039 Tanaka et al. May 2018 A1
20180134974 Weiss et al. May 2018 A1
20180163144 Weiss et al. Jun 2018 A1
20180179457 Mukherjee et al. Jun 2018 A1
20180202607 Mcbride Jul 2018 A1
20180230389 Moore et al. Aug 2018 A1
20180246142 Glover Aug 2018 A1
20180355263 Moore et al. Dec 2018 A1
20180361312 Dutra e Mello et al. Dec 2018 A1
20180371325 Streiff et al. Dec 2018 A1
20190002772 Moore et al. Jan 2019 A1
20190010405 Moore et al. Jan 2019 A1
20190010408 Moore et al. Jan 2019 A1
20190016980 Kar et al. Jan 2019 A1
20190093026 Wohaibi et al. Mar 2019 A1
20190099706 Sampath Apr 2019 A1
20190100702 Cantley et al. Apr 2019 A1
20190127651 Kar et al. May 2019 A1
20190128160 Peng May 2019 A1
20190136144 Wohaibi et al. May 2019 A1
20190153340 Weiss et al. May 2019 A1
20190153942 Wohaibi et al. May 2019 A1
20190169509 Cantley et al. Jun 2019 A1
20190185772 Berkhous et al. Jun 2019 A1
20190201841 McClelland Jul 2019 A1
20190203130 Mukherjee Jul 2019 A1
20190218466 Slade et al. Jul 2019 A1
20190233741 Moore et al. Aug 2019 A1
20190292465 Mcbride Sep 2019 A1
20190338205 Ackerson et al. Nov 2019 A1
20190382668 Klussman et al. Dec 2019 A1
20190382672 Sorensen Dec 2019 A1
20200041481 Burgess Feb 2020 A1
20200049675 Ramirez Feb 2020 A1
20200080881 Langlois et al. Mar 2020 A1
20200095509 Moore et al. Mar 2020 A1
20200123458 Moore et al. Apr 2020 A1
20200181502 Paasikallio et al. Jun 2020 A1
20200199462 Klussman et al. Jun 2020 A1
20200208068 Hossain et al. Jul 2020 A1
20200246743 Sorensen Aug 2020 A1
20200291316 Robbins et al. Sep 2020 A1
20200312470 Craig et al. Oct 2020 A1
20200316513 Zhao Oct 2020 A1
20200332198 Yang et al. Oct 2020 A1
20200353456 Zalewski et al. Nov 2020 A1
20200378600 Craig et al. Dec 2020 A1
20200385644 Rogel et al. Dec 2020 A1
20210002559 Larsen et al. Jan 2021 A1
20210003502 Kirchmann et al. Jan 2021 A1
20210033631 Field et al. Feb 2021 A1
20210103304 Fogarty et al. Apr 2021 A1
20210115344 Perkins et al. Apr 2021 A1
20210181164 Shirkhan et al. Jun 2021 A1
20210213382 Cole Jul 2021 A1
20210238487 Moore et al. Aug 2021 A1
20210253964 Eller et al. Aug 2021 A1
20210253965 Woodchick et al. Aug 2021 A1
20210261874 Eller et al. Aug 2021 A1
20210284919 Moore et al. Sep 2021 A1
20210292661 Klussman et al. Sep 2021 A1
20210301210 Timken et al. Sep 2021 A1
20210396660 Zarrabian Dec 2021 A1
20210403819 Moore et al. Dec 2021 A1
20220040629 Edmoundson et al. Feb 2022 A1
20220041940 Pradeep et al. Feb 2022 A1
20220048019 Zalewski et al. Feb 2022 A1
20220268694 Bledsoe et al. Aug 2022 A1
20220298440 Woodchick et al. Sep 2022 A1
20220299170 Raynor et al. Sep 2022 A1
20220343229 Gruber et al. Oct 2022 A1
20220357303 Zhu et al. Nov 2022 A1
20230015077 Kim Jan 2023 A1
20230078852 Campbell et al. Mar 2023 A1
20230080192 Bledsoe et al. Mar 2023 A1
20230082189 Bledsoe et al. Mar 2023 A1
20230084329 Bledsoe et al. Mar 2023 A1
20230087063 Mitzel et al. Mar 2023 A1
20230089935 Bledsoe et al. Mar 2023 A1
20230111609 Sexton et al. Apr 2023 A1
20230113140 Larsen et al. Apr 2023 A1
20230118319 Sexton et al. Apr 2023 A1
20230220286 Cantley et al. Jul 2023 A1
20230241548 Holland et al. Aug 2023 A1
20230242837 Short et al. Aug 2023 A1
20230259080 Whikehart et al. Aug 2023 A1
20230259088 Borup et al. Aug 2023 A1
20230272290 Larsen et al. Aug 2023 A1
20230295528 Eller et al. Sep 2023 A1
20230332056 Larsen et al. Oct 2023 A1
20230332058 Larsen et al. Oct 2023 A1
20230357649 Sexton et al. Nov 2023 A1
20230400184 Craig Dec 2023 A1
20230416615 Larsen Dec 2023 A1
20230416638 Short Dec 2023 A1
20240011898 Bledsoe, Jr. et al. Jan 2024 A1
20240115996 Rudd Apr 2024 A1
20240117262 Eller Apr 2024 A1
20240118194 Bledsoe, Jr. Apr 2024 A1
20240124790 Sexton Apr 2024 A1
20240132786 Sexton Apr 2024 A1
Foreign Referenced Citations (159)
Number Date Country
11772 Apr 2011 AT
PI0701518 Nov 2008 BR
2949201 Nov 2015 CA
2822742 Dec 2016 CA
3009808 Jul 2017 CA
2904903 Aug 2020 CA
3077045 Sep 2020 CA
2947431 Mar 2021 CA
3004712 Jun 2021 CA
2980055 Dec 2021 CA
2879783 Jan 2022 CA
2991614 Jan 2022 CA
2980069 Nov 2022 CA
3109606 Dec 2022 CA
432129 Mar 1967 CH
2128346 Mar 1993 CN
201264907 Jul 2009 CN
201306736 Sep 2009 CN
201940168 Aug 2011 CN
102120138 Dec 2012 CN
203453713 Feb 2014 CN
203629938 Jun 2014 CN
203816490 Sep 2014 CN
104353357 Feb 2015 CN
204170623 Feb 2015 CN
103331093 Apr 2015 CN
204253221 Apr 2015 CN
204265565 Apr 2015 CN
105148728 Dec 2015 CN
204824775 Dec 2015 CN
103933845 Jan 2016 CN
105289241 Feb 2016 CN
105536486 May 2016 CN
105804900 Jul 2016 CN
103573430 Aug 2016 CN
205655095 Oct 2016 CN
104326604 Nov 2016 CN
104358627 Nov 2016 CN
106237802 Dec 2016 CN
205779365 Dec 2016 CN
106407648 Feb 2017 CN
105778987 Aug 2017 CN
207179722 Apr 2018 CN
207395575 May 2018 CN
108179022 Jun 2018 CN
108704478 Oct 2018 CN
109126458 Jan 2019 CN
109423345 Mar 2019 CN
109499365 Mar 2019 CN
109705939 May 2019 CN
109722303 May 2019 CN
110129103 Aug 2019 CN
110229686 Sep 2019 CN
209451617 Oct 2019 CN
110987862 Apr 2020 CN
111336612 Jun 2020 CN
213824075 Jul 2021 CN
215263512 Dec 2021 CN
215288592 Dec 2021 CN
113963818 Jan 2022 CN
114001278 Feb 2022 CN
217431673 Sep 2022 CN
218565442 Mar 2023 CN
10179 Jun 1912 DE
3721725 Jan 1989 DE
19619722 Nov 1997 DE
102010017563 Dec 2011 DE
102014009231 Jan 2016 DE
0142352 May 1985 EP
0527000 Feb 1993 EP
0783910 Jul 1997 EP
09049318 Oct 1999 EP
0783910 Dec 2000 EP
0801299 Mar 2004 EP
1413712 Apr 2004 EP
1600491 Nov 2005 EP
1870153 Dec 2007 EP
2047905 Apr 2009 EP
2955345 Dec 2015 EP
3130773 Feb 2017 EP
3139009 Mar 2017 EP
3239483 Nov 2017 EP
3085910 Aug 2018 EP
3355056 Aug 2018 EP
2998529 Feb 2019 EP
3441442 Feb 2019 EP
3569988 Nov 2019 EP
3878926 Sep 2021 EP
2357630 Feb 1978 FR
3004722 Mar 2016 FR
3027909 May 2016 FR
3067036 Dec 2018 FR
3067037 Dec 2018 FR
3072684 Apr 2019 FR
3075808 Jun 2019 FR
775273 May 1957 GB
933618 Aug 1963 GB
1207719 Oct 1970 GB
2144526 Mar 1985 GB
202111016535 Jul 2021 IN
59220609 Dec 1984 JP
2003129067 May 2003 JP
3160405 Jun 2010 JP
2015059220 Mar 2015 JP
2019014275 Jan 2019 JP
101751923 Jul 2017 KR
101823897 Mar 2018 KR
20180095303 Aug 2018 KR
20190004474 Jan 2019 KR
20190004475 Jan 2019 KR
2673558 Nov 2018 RU
2700705 Sep 2019 RU
2760879 Dec 2021 RU
320682 Nov 1997 TW
9408225 Apr 1994 WO
199640436 Dec 1996 WO
1997033678 Sep 1997 WO
199803249 Jan 1998 WO
1999041591 Aug 1999 WO
2001051588 Jul 2001 WO
2002038295 May 2002 WO
2006126978 Nov 2006 WO
2008088294 Jul 2008 WO
2010144191 Dec 2010 WO
2012026302 Mar 2012 WO
2012062924 May 2012 WO
2012089776 Jul 2012 WO
2012108584 Aug 2012 WO
2014053431 Apr 2014 WO
2014096703 Jun 2014 WO
2014096704 Jun 2014 WO
2014191004 Jul 2014 WO
2014177424 Nov 2014 WO
2014202815 Dec 2014 WO
2016167708 Oct 2016 WO
2017067088 Apr 2017 WO
2017207976 Dec 2017 WO
2018017664 Jan 2018 WO
2018073018 Apr 2018 WO
2018122274 Jul 2018 WO
2018148675 Aug 2018 WO
2018148681 Aug 2018 WO
2018231105 Dec 2018 WO
2019053323 Mar 2019 WO
2019104243 May 2019 WO
2019155183 Aug 2019 WO
2019178701 Sep 2019 WO
2020035797 Feb 2020 WO
2020160004 Aug 2020 WO
2021058289 Apr 2021 WO
2022133359 Jun 2022 WO
2022144495 Jul 2022 WO
2022149501 Jul 2022 WO
2022219234 Oct 2022 WO
2022220991 Oct 2022 WO
2023038579 Mar 2023 WO
2023137304 Jul 2023 WO
2023164683 Aug 2023 WO
2023242308 Dec 2023 WO
Non-Patent Literature Citations (65)
Entry
Lloyd's Register, Using technology to trace the carbon intensity of sustainable marine fuels, Feb. 15, 2023.
Bollas et al., “Modeling Small-Diameter FCC Riser Reactors. A Hydrodynamic and Kinetic Approach”, Industrial and Engineering Chemistry Research, 41(22), 5410-5419, 2002.
Voutetakis et al., “Computer Application and Software Development for the Automation of a Fluid Catalytic Cracking Pilot Plant—Experimental Results”, Computers & Chemical Engineering, vol. 20 Suppl., S1601-S1606, 1996.
“Development of Model Equations for Predicting Gasoline Blending Properties”, Odula et al., American Journal of Chemical Engineering, vol. 3, No. 2-1, 2015, pp. 9-17.
Swagelok, Grab Sampling Systems Application Guide, 53 pages.
Frank et al., “Fuel Tank and Charcoal Canister Fire Hazards during EVAP System Leak Testing”, SAE International, 2007 World Congress, Detroit, Michigan, Apr. 16-19, 2007, 11 pages.
Doolin et al., “Catalyst Regeneration and Continuous Reforming Issues”, Catalytic Naptha Reforming, 2004.
Platvoet et al., Process Burners 101, American Institute of Chemical Engineers, Aug. 2013.
Luyben, W. L., Process Modeling, Simulation, and Control for Chemical Engineers, Feedforward Control, pp. 431-433.
Cooper et al., Calibration transfer of near-IR partial least squares property models of fuels using standards, Wiley Online Library, Jul. 19, 2011.
ABB Measurement & Analytics, Using FT-NIR as a Multi-Stream Method for CDU Optimization, Nov. 8, 2018.
Modcon Systems LTD., On-Line NIR Analysis of Crude Distillation Unit, Jun. 2008.
ABB Measurement & Analytics, Crude distillation unit (CDU) optimization, 2017.
Guided Wave Inc., The Role of NIR Process Analyzers in Refineries to Process Crude Oil into Useable Petrochemical Products, 2021.
ABB Measurement & Analytics, Optimizing Refinery Catalytic Reforming Units with the use of Simple Robust On-Line Analyzer Technology, Nov. 27, 2017, https://www.azom.com/article.aspx?ArticleID=14840.
Bueno, Alexis et al., Characterization of Catalytic Reforming Streams by NIR Spectroscopy, Energy & Fuels 2009, 23, 3172-3177, Apr. 29, 2009.
Caricato, Enrico et al, Catalytic Naphtha Reforming—a Novel Control System for the Bench-Scale Evaluation of Commerical Continuous Catalytic Regeneration Catalysts, Industrial of Engineering Chemistry Research, ACS Publications, May 18, 2017.
Alves, J. C. L., et al., Diesel Oil Quality Parameter Determinations Using Support Vector Regression and Near Infrared Spectroscopy for Hydrotreationg Feedstock Monitoring, Journal of Near Infrared Spectroscopy, 20, 419-425 (2012), Jul. 23, 2012.
Rodriguez, Elena et al., Coke deposition and product distribution in the co-cracking of waste polyolefin derived streams and vacuum gas oil under FCC unit conditions, Fuel Processing Technology 192 (2019), 130-139.
Passamonti, Francisco J. et al., Recycling of waste plastics into fuels, PDPE conversion in FCC, Applied Catalysis B: Environmental 125 (2012), 499-506.
De Rezende Pinho, Andrea et al., Fast pyrolysis oil from pinewood chips co-processing with vacuum gas oil in an FCC unit for second generation fuel production, Fuel 188 (2017), 462-473.
Niaei et al., Computational Study of Pyrolysis Reactions and Coke Deposition in Industrial Naphtha Cracking, P.M.A. Sloot et al., Eds.: ICCS 2002, LNCS 2329, pp. 723-732, 2002.
Hanson et al., An atmospheric crude tower revamp, Digital Refining, Article, Jul. 2005.
Lopiccolo, Philip, Coke trap reduces FCC slurry exchanger fouling for Texas refiner, Oil & Gas Journal, Sep. 8, 2003.
Martino, Germain, Catalytic Reforming, Petroleum Refining Conversion Processes, vol. 3, Chapter 4, pp. 101-168, 2001.
Baukal et al., Natural-Draft Burners, Industrial Burners Handbook, CRC Press 2003.
Spekuljak et al., Fluid Distributors for Structured Packing Colums, AICHE, Nov. 1998.
Hemler et al., UOP Fluid Catalytic Cracking Process, Handbook of Petroleum Refining Processes, 3rd ed., McGraw Hill, 2004.
United States Department of Agriculture, NIR helps Turn Vegetable Oil into High-Quality Biofuel, Agricultural Research Service, Jun. 15, 1999.
NPRA, 2006 Cat Cracker Seminar Transcript, National Petrochemical & Refiners Association, Aug. 1-2, 2006.
Niccum, Phillip K. et al. KBR, CatCracking.com, More Production—Less Risk!, Twenty Questions: Identify Probably Cuase of High FCC Catalyst Loss, May 3-6, 2011.
NPRA, Cat-10-105 Troubleshooting FCC Catalyst Losses, National Petrochemical & Refiners Association, Aug. 24-25, 2010.
Fraser, Stuart, Distillation in Refining, Distillation Operation and Applications (2014), pp. 155-190 (Year: 2014).
Yasin et al., Quality and chemistry of crude oils, Journal of Petroleum Technology and Alternative Fuels, vol. 4(3), pp. 53-63, Mar. 2013.
Penn State, Cut Points, https://www.e-education.psu.edu/fsc432/content/cut-points, 2018.
The American Petroleum Institute, Petroleum HPV Testing Group, Heavy Fuel Oils Category Analysis and Hazard Characterization, Dec. 7, 2012.
Increase Gasoline Octane and Light Olefin Yeilds with ZSM-5, vol. 5, Issue 5, http://www.refiningonline.com/engelhardkb/crep/TCR4_35.htm.
Fluid Catalytic Cracking and Light Olefins Production, Hydrocarbon Publishing Company, 2011, http://www.hydrocarbonpublishing.com/store10/product.php?productid+b21104.
Zhang et al., Multifunctional two-stage riser fluid catalytic cracking process, Springer Applied Petrocchemical Research, Sep. 3, 2014.
Reid, William, Recent trends in fluid catalytic cracking patents, part V: reactor section, Dilworth IP, Sep. 3, 2014.
Akah et al., Maximizing propylene production via FCC technology, SpringerLink, Mar. 22, 2015.
Vogt et al., Fluid Catalytic Cracking: Recent Developments on the Grand Old Lady of Zeolite Catalysis, Royal Society of Chemistry, Sep. 18, 2015.
Zhou et al., Study on the Integration of Flue Gas Waste He Desulfuization and Dust Removal in Civilian Coalfired Heating Furnance, 2020 IOP Conf. Ser.: Earth Environ. Sci. 603 012018.
Vivek et al., Assessment of crude oil blends, refiner's assessment of the compatibility of opportunity crudes in blends aims to avoid the processing problems introduced by lower-quality feedstocks, www.digitalrefining.com/article/10000381, 2011.
International Standard, ISO 8217, Petroleum products—Fuels (class F)—Specifications of marine fuels, Sixth Edition, 2017.
International Standard, ISO 10307-1, Petroleum products—Total sediment in residual fuel oils—, Part 1: Determination by hot filtration, Second Edition, 2009.
International Standard, ISO 10307-2, Petroleum products—Total sediment in residual fuel oils—, Part 2: Determination using standard procedures for aging, Second Edition, 2009.
Ebner et al., Deactivatin and durability of the catalyst for Hotspot™ natural gas processing, OSTI, 2000, https://www.osti/gov/etdeweb/servlets/purl/20064378, (Year: 2000).
Morozov et al., Best Practices When Operating a Unit for Removing Hydrogen Sulfide from Residual Fuel Oil, Chemistry and Technology of Fuels and Oils, vol. 57, No. 4, Sep. 2001.
Calbry-Muzyka et al., Deep removal of sulfur and trace organic compounds from biogas to protect a catalytic methananation reactor, Chemical Engineering Joural 360, pp. 577-590, 2019.
Cheah et al., Review of Mid- to High-Tempearture Sulfur Sorbents for Desulfurization of Biomass- and Coal-derived Syngas, Energy Fuels 2009, 23, pp. 5291-5307, Oct. 16, 2019.
Mandal et al., Simultaneous absorption of carbon dioxide of hydrogen sulfide into aqueous blends of 2-amino-2-methyl-1 propanol and diethanolamine, Chemical Engineering Science 60, pp. 6438-6451, 2005.
Meng et al., In bed and downstream hot gas desulphurization during solid fuel gasification: A review, Fuel Processing Technology 91, pp. 964-981, 2010.
Okonkwo et al., Role of Amine Structure on Hydrogen Sulfide Capture from Dilute Gas Streams Using Solid Adsorbents, Energy Fuels, 32, pp. 6926-6933, 2018.
Okonkwo et al., Selective removal of hydrogen sulfide from simulated biogas streams using sterically hindered amine adsorbents, Chemical Engineering Journal 379, pp. 122-349, 2020.
Seo et al., Methanol absorption characteristics for the removal of H2S (hydrogen sulfide), COS (carbonyl sulfide) and CO2 (carbon dioxide) in a pilot-scale biomass-to-liquid process, Energy 66, pp. 56-62, 2014.
Pashikanti et al., “Predictive modeling of large-scale integrated refinery reaction and fractionation systems from plant data. Part 3: Continuous Catalyst Regeneration (CCR) Reforming Process,” Energy & Fuels 2011, 25, 5320-5344 (Year: 2011).
Lerh et al., Feature: IMO 2020 draws more participants into Singapore's bunkering pool., S&P Global Platts, www.spglobal.com, Sep. 3, 2019.
Cremer et al., Model Based Assessment of the Novel Use of Sour Water Stripper Vapor for NOx Control in CO Boilers, Industrial Combustion Symposium, American Flame Research Committee 2021, Nov. 19, 2021.
Frederick et al., Alternative Technology for Sour Water Stripping, University of Pennsylvania, Penn Libraries, Scholarly Commons, Apr. 20, 2018.
Da Vinci Laboratory Solutions B. V., DVLS Liquefied Gas Injector, Sampling and analysis of liquefied gases, https://www.davinci-ls.com/en/products/dvls-products/dvls-liquefied-gas-injector.
Wasson ECE Instrumentation, LPG Pressurization Station, https://wasson-ece.com/products/small-devices/ipg-pressurization-station.
Mechatest B. V., Gas & Liquefied Gas Sampling Systems, https://www.mechatest.com/products/gas-sampling-system/.
La Rivista dei Combustibili, The Fuel Magazine, vol. 66, File 2, 2012.
Zulkefi et al., Overview of H2S Removal Technologies from Biogas Production, International Journal of Applied Engineering Research ISSN 0973-4562, vol. 11, No. 20, pp. 10060-10066, © Research India Publications, 2016.
Related Publications (1)
Number Date Country
20200312470 A1 Oct 2020 US
Provisional Applications (1)
Number Date Country
62823156 Mar 2019 US