Hydrogen Donor Diluent Cyclic Processes Patents (Class 208/56)
  • Patent number: 10487269
    Abstract: Plants and methods are presented for crude feed pre-processing before feeding the crude feed into a crude unit or vacuum unit. Pre-processing is preferably achieved with a combination of a preflash drum and a preflash column that allows for high-temperature treatment of the liquids and separate vapor phase handling, which advantageously enables retrofitting existing plants to accommodate lighter crude feeds.
    Type: Grant
    Filed: August 2, 2018
    Date of Patent: November 26, 2019
    Assignee: Fluor Technologies Corporation
    Inventor: Chilkunda K. Venkatesh
  • Patent number: 10160920
    Abstract: A sequential cracking process for the thermal cracking of a hydrocarbon feedstock in a cascade of cracking units wherein said hydrocarbon feedstock is heated in a furnace to a predetermined maximum temperature and thermally cracked in the cascade of cracking, such that the formation of coke is reduced.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: December 25, 2018
    Assignees: SAUDI BASIC INDUSTRIES CORPORATION, SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Vijayanand Rajagopalan, Ravichander Narayanaswamy, Arno Johannes Maria Oprins
  • Patent number: 9023298
    Abstract: An apparatus for reforming a hydrocarbon stream is presented. The apparatus involves changing the design of reformers and associated equipment to allow for increasing the processing temperatures in the reformers and heaters. The reformers are operated under different conditions to utilize advantages in the equilibriums, but require modifications to prevent increasing thermal cracking and to prevent increases in coking.
    Type: Grant
    Filed: April 5, 2012
    Date of Patent: May 5, 2015
    Assignee: UOP LLC
    Inventors: Mark D. Moser, Clayton C. Sadler, Mark P. Lapinski, Kurt M. VandenBussche
  • Patent number: 8435400
    Abstract: Systems and methods for hydroprocessing heavy oil feedstock is disclosed. The process employs a plurality of contacting zones and at least a separation zone to convert at least a portion of the heavy oil feedstock to lower boiling hydrocarbons, forming upgraded products. In one embodiment, water and/or steam being injected into at least a contacting zone. The contacting zones operate under hydrocracking conditions, employing at least a slurry catalyst. In one embodiment, at least a portion of the non-volatile fractions recovered from at least one of the separation zones is recycled back to at least a contacting zone (“recycled mode”). In one embodiment, the number of separation zones is less than the number of contacting zones in the system. In the separation zones, upgraded products are removed overhead and optionally treated in an in-line hydrotreater; and the bottom stream is optionally further treated in a fractionator.
    Type: Grant
    Filed: May 9, 2011
    Date of Patent: May 7, 2013
    Assignee: Chevron U.S.A.
    Inventors: Bo Kou, Shuwu Yang, Bruce Reynolds, Julie Chabot
  • Publication number: 20120152801
    Abstract: Biofuel compositions obtained by the simultaneous hydroprocessing of at least two distinct hydroprocessing feedstocks, either or both of which are derived from biomass, are disclosed. The co-processing of these feedstocks can result in an upgraded product having suitable characteristics, in terms of composition (e.g., quantities of compounds such as aromatic hydrocarbons, present in relatively large amounts) and in terms of quality (e.g., quantities of compounds such as oxygenates, present in relatively small amounts) for use as a hydroprocessed biofuel such as hydroprocessed aviation biofuel.
    Type: Application
    Filed: December 15, 2010
    Publication date: June 21, 2012
    Applicant: UOP LLC
    Inventors: ANDREA G. BOZZANO, CHRISTOPHER DAVID GOSLING, TOM N. KALNES
  • Publication number: 20120024750
    Abstract: Processes for the hydrodechlorination of one or more hydrocarbon products derived from ionic liquid catalyzed hydrocarbon conversion reactions provide a dechlorinated product and an HCl-containing off-gas. The dechlorinated product provides liquid fuel or lubricating base oil, and the HCl may be recovered from the off-gas for recycling to the ionic liquid catalyzed hydrocarbon conversion reaction as a catalyst promoter.
    Type: Application
    Filed: July 30, 2010
    Publication date: February 2, 2012
    Inventors: Bi-Zeng Zhan, Hye Kyung Timken, Zunqing He, Russell Cooper
  • Publication number: 20110198265
    Abstract: The described invention discloses an innovative solvent deasphalter and hydroconversion-processing configuration for converting bitumen or heavy oils to produce a transportable synthetic crude oil (SCO). The innovative processing scheme disclosed herein maximizes the synthetic crude oil yield at a minimal investment compared to currently known methods.
    Type: Application
    Filed: February 12, 2010
    Publication date: August 18, 2011
    Inventors: James J. Colvar, Lawrence I. Wisdom
  • Patent number: 7892500
    Abstract: A system and method for recycling plastics. The system and method recover materials such as hydrocarbon gases, liquid hydrocarbon distillates, various polymers and/or monomers used to produce the original plastics. The system and method allow about one unit of input of energy input to the plastic recycler to be used to create one or more gaseous components and one or more liquid distillate components from a plastic that is being recycled. The one or more gaseous components and one or more liquid distillate components produce about one corresponding unit of useable output energy recovered from the recycling of the plastic.
    Type: Grant
    Filed: November 18, 2009
    Date of Patent: February 22, 2011
    Inventor: William E. Carner
  • Patent number: 7740751
    Abstract: One exemplary embodiment of the present invention can be a hydrocarbon conversion process. The process may include passing a hydrocarbon stream through at least one heater including at least one burner, a radiant section, and a convection section. Generally, the stream passes through the radiant section and then through the convection section before exiting the heater. Desirably, the hydrocarbon stream includes, in percent or parts by weight based on the total weight of hydrocarbons in the stream: C4 or less: less than about 0.5%, sulfur or sulfur containing compounds: less than about 1 ppm, and nitrogen or nitrogen containing compounds: less than about 1 ppm. Preferably, the sulfur or sulfur containing compounds and the nitrogen or nitrogen containing compounds are measured as, respectively, elemental sulfur or nitrogen.
    Type: Grant
    Filed: November 9, 2006
    Date of Patent: June 22, 2010
    Assignee: UOP LLC
    Inventor: Kenneth D. Peters
  • Patent number: 7626062
    Abstract: A system and method for recycling plastics. The system and method recover materials such as hydrocarbon gases, liquid hydrocarbon distillates, various polymers and/or monomers used to produce the original plastics. The system and method allow about one unit of input of energy input to the plastic recycler to be used to create one or more gaseous components and one or more liquid distillate components from a plastic that is being recycled. The one or more gaseous components and one or more liquid distillate components produce about one corresponding unit of useable output energy recovered from the recycling of the plastic.
    Type: Grant
    Filed: July 31, 2007
    Date of Patent: December 1, 2009
    Inventor: William E. Carner
  • Patent number: 7594990
    Abstract: A process derived hydrogen donor solvent is used to increase the maximum resid conversion and conversion rate in an ebullated bed resid hydrocracker. The hydrogen donor solvent precursor is produced by hydroreforming reactions within the resid hydrocracker, recovered as the resin fraction from a solvent deasphalting unit, regenerated in a separate hydrotreater reactor, and recycled to the ebullated bed resid hydrocracker. The major advantage of this invention relative to earlier processes is that hydrogen is more efficiently transferred to the resin residual oil in the separate hydrotreater and the hydrogen donor solvent effectively retards the formation of coke precursors at higher ebullated bed resid hydrocracker operating temperatures and resid cracking rates.
    Type: Grant
    Filed: August 7, 2006
    Date of Patent: September 29, 2009
    Assignee: The BOC Group, Inc.
    Inventor: Donald Prentice Satchell, Jr.
  • Publication number: 20090229174
    Abstract: A process has been developed for producing diesel fuel from renewable feedstocks such as plant oils and greases. The process involves treating a renewable feedstock by hydrogenating and deoxygenating i.e. decarboxylating and/or hydrodeoxygenating to provide a hydrocarbon fraction useful as a diesel fuel. If desired, the hydrocarbon fraction can be isomerized to improve cold flow properties. A portion of the hydrogenated and deoxygenated feedstock is selectively separated and then recycled to the treatment zone to increase the hydrogen solubility of the reaction mixture. A diesel range stream or a naphtha range stream, or a mixture of the two streams is used as a rectification agent in the selective hot high pressure hydrogen stripper to decrease the amount of product carried in the overhead.
    Type: Application
    Filed: March 13, 2009
    Publication date: September 17, 2009
    Inventors: John P Brady, Tom N. Kalnes, Terry L. Marker
  • Publication number: 20090101540
    Abstract: Process for the conversion of heavy charges such as heavy crude oils, tars from oil sands and distillation residues, by the combined use of the following three process units: hydroconversion with catalysts in slurry phase (HT), distillation or flash (D), deasphalting (SDA), characterized in that the three units operate on mixed streams consisting of fresh charge and recycled streams, by the use of the following steps: sending at least one fraction of the heavy charge to a deasphalting section (SDA) in the presence of hydrocarbon solvents obtaining two streams, one consisting of deasphalted oil (DAO), the other of asphalts; mixing the asphalt with a suitable hydrogenation catalyst and optionally with the remaining fraction of heavy charge not sent to the deasphalting section and sending the mixture obtained to a hydro-treatment reactor (HT) into which hydrogen or a mixture of hydrogen and H2S is charged; sending the stream containing the hydro-treatment reaction product and the catalyst in dispersed phase t
    Type: Application
    Filed: October 9, 2008
    Publication date: April 23, 2009
    Applicants: ENI S.P. A., SNAMPROGETTI S.p.A., ENITECNOLOGIE S.p.A.
    Inventors: Mario MARCHIONNA, Alberto Delbianco, Nicoletta Panariti, Romolo Montanari, Sergio Rosi, Sebastiano Correra
  • Publication number: 20090057193
    Abstract: The instant invention is directed to a new residuum full hydroconversion slurry reactor system that allows the catalyst, unconverted oil and converted oil to circulate in a continuous mixture throughout an entire reactor with no confinement of the mixture. The mixture is partially separated in between the reactors to remove only the products and hydrogen, while permitting the unconverted oil and the slurry catalyst to continue on into the next sequential reactor where a portion of the unconverted oil is converted to lower boiling point hydrocarbons, once again creating a mixture of unconverted oil, converted oil, and slurry catalyst. Further hydroprocessing may occur in additional reactors, fully converting the oil. The oil may alternately be partially converted, leaving a highly concentrated catalyst in unconverted oil which can be recycled directly to the first reactor.
    Type: Application
    Filed: September 17, 2008
    Publication date: March 5, 2009
    Inventors: Darush Farshid, Bruce Reynolds
  • Publication number: 20090057194
    Abstract: Applicants have developed a new residuum full hydroconversion slurry reactor system that allows the catalyst, unconverted oil, hydrogen, and converted oil to circulate in a continuous mixture throughout an entire reactor with no confinement of the mixture. The mixture is separated internally, within one of more of the reactors, to separate only the converted oil and hydrogen into a vapor product while permitting the unconverted oil and the slurry catalyst to continue on into the next sequential reactor as a liquid product. A portion of the unconverted oil is then converted to lower boiling point hydrocarbons in the next reactor, once again creating a mixture of unconverted oil, hydrogen, converted oil, and slurry catalyst. Further hydroprocessing may occur in additional reactors, fully converting the oil. The oil may alternately be partially converted, leaving a concentrated catalyst in unconverted oil which can be recycled directly to the first reactor.
    Type: Application
    Filed: September 17, 2008
    Publication date: March 5, 2009
    Inventors: Darush Farshid, James Murphy, Bruce Reynolds
  • Publication number: 20090045099
    Abstract: Processes for maximizing low aromatics LCO yield and/or propylene yield in fluid catalytic cracking are disclosed. The processes employ catalytic compositions that comprise a predominantly basic material and little to no large pore zeolite.
    Type: Application
    Filed: June 9, 2008
    Publication date: February 19, 2009
    Applicant: ALBEMARLE NETHERLANDS B.V.
    Inventors: King Yen Yung, Elbert Arjan De Graaf, Raymond Paul Fletcher, Erja Paivi Helena Rautiainen
  • Publication number: 20080110800
    Abstract: One exemplary embodiment of the present invention can be a hydrocarbon conversion process. The process may include passing a hydrocarbon stream through at least one heater including at least one burner, a radiant section, and a convection section. Generally, the stream passes through the radiant section and then through the convection section before exiting the heater. Desirably, the hydrocarbon stream includes, in percent or parts by weight based on the total weight of hydrocarbons in the stream: C4 or less: less than about 0.5%, sulfur or sulfur containing compounds: less than about 1 ppm, and nitrogen or nitrogen containing compounds: less than about 1 ppm. Preferably, the sulfur or sulfur containing compounds and the nitrogen or nitrogen containing compounds are measured as, respectively, elemental sulfur or nitrogen.
    Type: Application
    Filed: November 9, 2006
    Publication date: May 15, 2008
    Inventor: Kenneth D. Peters
  • Patent number: 7247232
    Abstract: An alternative fuel source, preferably for use in a boiler, is provided. The fuel source is comprised of a partially hydrogenated vegetable oil and diesel fuel. Preferably, the partially hydrogenated vegetable oil has a Iodine Value (IV) ranging from approximately 50 to approximately 120.
    Type: Grant
    Filed: June 10, 2004
    Date of Patent: July 24, 2007
    Assignee: Bunge North America, Inc.
    Inventors: Wilbur J. Stewart, Jr., Billy R. Cole, Sarah Michalek, Susan Gleissner
  • Patent number: 7201837
    Abstract: An alternative fuel source, preferably for use in a boiler, is provided. The fuel source is comprised of a partially hydrogenated vegetable oil and diesel fuel. Preferably, the partially hydrogenated vegetable oil has a Iodine Value (IV) ranging from approximately 50 to approximately 120.
    Type: Grant
    Filed: March 19, 2002
    Date of Patent: April 10, 2007
    Assignee: Bunge North America, Inc.
    Inventors: Wilbur J. Stewart, Jr., Billy R. Cole, Sarah Michalek, Susan Gleissner
  • Patent number: 7067053
    Abstract: A process for upgrading a heavy crude oil includes the steps of providing a heavy crude oil; and exposing the heavy crude oil to residue conversion conditions in the presence of a free radical generator and a hydrogen donor, whereby the free radical generator enhances reactions to form distillates, and the hydrogen donor inhibits reactions to form coke.
    Type: Grant
    Filed: August 16, 2002
    Date of Patent: June 27, 2006
    Assignee: Intevep, S.A.
    Inventors: Edgar A Cotte, Ivan C. Machin
  • Patent number: 6919016
    Abstract: A process is disclosed for preparing a C4 stream for feeding to an alkylation process which reacts isobutane with butene to produce isooctane. The C4 stream is treated in a first distillation column reactor to remove dienes and mercaptans and separate out any C5's which might be present. The treated C4's are then fed to a second distillation column reactor that concurrently isomerizes 1-butene to 2-butene and splits the normal C4's from the iso C4's. The iso C4's are then fed to a third distillation column reactor where a portion of the isobutene is saturated to isobutane. The C4's from the isomerization/splitter are combined with the C4's from the hydrogenation unit and fed to a cold acid alkylation unit. The third distillation column may also oligomerize a portion of the isobutene to diisobutene in the upper end which is saturated in the bottom of the column to isooctane.
    Type: Grant
    Filed: August 5, 2004
    Date of Patent: July 19, 2005
    Assignee: Catalytic Distillation Technologies
    Inventors: Gary G. Podrebarac, Mario J. Maraschino
  • Publication number: 20030098262
    Abstract: A method and apparatus for the extraction of hydrocarbon products, alumina and soda ash from oil shales including various amounts of such chemicals, all based on solvent extraction of most of the hydrocarbons at temperatures around 400° C. Such enables the alumina and soda ash values to be leached out with aqueous sodium carbonate leaching at reduced temperatures of around 150° C. with a corresponding reduced pressure. The soda ash monohydrate values are precipitated from the leach liquor at around 100° C. with the alumina values precipitated using Co2. Alternatively recycled fine aluminum trihydrate at 65° C. is used to produce alumina. Aluminum hydroxide is converted to acid alumina by an acid recycle stream that dissolves the alumina so any silica contaminant can be filtered out. Basic aluminum sulfate is then precipitated at about 200° C. and 250 PSIG for subsequent calcination at around 900° C.
    Type: Application
    Filed: September 19, 2002
    Publication date: May 29, 2003
    Inventor: John S. Rendall
  • Patent number: 6147126
    Abstract: A gas conversion process including catalytic hydrocarbon synthesis from a synthesis gas comprising a mixture of H.sub.2 and CO, produces hydrogen from the synthesis gas and upgrades synthesized hydrocarbons by one or more hydroconversion operations which utilize this hydrogen. The hydroconversion also produces a hydrogen rich tail gas which is used in the process for at least one of (i) hydrocarbon synthesis catalyst rejuvenation, (ii) the hydrocarbon synthesis, and (iii) hydrogen production. In one embodiment the tail gas is used to hydrodesulfurize sulfur-containing hydrocarbon liquids recovered from the natural gas used to form the synthesis gas. The hydrogen production is accomplished by physical separation, such as PSA, with or without chemical means such as a water gas shift reaction.
    Type: Grant
    Filed: February 10, 1998
    Date of Patent: November 14, 2000
    Assignee: Exxon Research and Engineering Company
    Inventors: Charles W. DeGeorge, Robert J. Wittenbrink, Thomas M. Stark
  • Patent number: 6043288
    Abstract: A gas conversion process in which both hydrocarbons and hydrogen are produced from a synthesis gas feed which comprises a mixture of H.sub.2 and CO, uses hydrogen from a portion of the feed for one or more of (i) hydrocarbon synthesis catalyst rejuvenation and (ii) hydroconversion upgrading of at least a portion of the synthesized hydrocarbons. Hydrogen is produced from a slipstream of the synthesis gas fed into the hydrocarbon synthesis reactor by one or more of (i) physical separation means such as pressure swing adsorption and (ii) chemical means such as a water gas shift reactor. If a shift reactor is used due to insufficient capacity of the synthesis gas generator, physical separation means such as pressure swing adsorption will still be used to separate a pure stream of hydrogen from the shift reactor gas effluent.
    Type: Grant
    Filed: February 13, 1998
    Date of Patent: March 28, 2000
    Assignee: Exxon Research and Engineering Co.
    Inventors: Charles W. DeGeorge, Robert D. Denton
  • Patent number: 5460714
    Abstract: The invention involves the liquid phase hydroconversion of hydrocarbon charges containing heavy fractions, and more particularly their deep conversion, in which the charge is contacted with a dispersed catalyst in the presence of a polyaromatic additive. The catalyst is a sulfide of a hydrogenating metal (such as molybdenum, nickel or cobalt) generated in situ from a precursor. The additive has at least three aromatic cycles, has a boiling point exceeding 300.degree. C., and is added at a rate of 5 to 60% by weight based on the charge. Synergism between the catalyst and the additive makes it possible to reduce the catalyst quantity and/or improve the conversion and quality of the products.
    Type: Grant
    Filed: March 25, 1993
    Date of Patent: October 24, 1995
    Assignees: Institut Francais du Petrole, Elf Antar France
    Inventors: Bernard Fixari, Pierre Le Perchec, Jeanne Elmouchnino, Frederic Morel, Martine Boulinguiez
  • Patent number: 5395511
    Abstract: A process is provided for converting a heavy hydrocarbon oil into light hydrocarbon fuels by thermal cracking or hydrocracking, which comprises adding to about 100 parts by weight of the heavy hydrocarbon oil feedstock (A) about 0.1 to 50 parts by weight of a substance (B) which is a hydrogenated oil obtained by aromatic ring hydrogenation of about 430.degree.-600.degree. C. thermal-treated or cracked petroleum feedstock product oil boiling higher than about 200.degree. C. to hydrogenate abot 20 to 90% of the aromatic rings present.
    Type: Grant
    Filed: June 23, 1993
    Date of Patent: March 7, 1995
    Assignee: Nippon Oil Co., Ltd.
    Inventors: Junichi Kubo, Tadakazu Yamashita, Osamu Kato
  • Patent number: 5332489
    Abstract: This invention relates to a process for converting a carbonaceous material to a liquid product using a hydrogen donor solvent. More specifically, this invention relates to a process for hydroconverting carbonaceous material in which a 400.degree.-1000.degree. F. hydroconversion product fraction is further hydrocracked and a hydrocracked fraction is used as the hydrogen donor solvent. An increased quantity of liquid product is achieved by removing an ash residuum from the hydroconversion product fraction prior to the hydrocracking process.
    Type: Grant
    Filed: June 11, 1993
    Date of Patent: July 26, 1994
    Assignee: Exxon Research & Engineering Co.
    Inventor: Lavanga R. Veluswamy
  • Patent number: 4966679
    Abstract: A method for hydrocracking a heavy fraction oil which comprises cracking a heavy fraction oil in the coexistence of a catalyst and a hydrogen donating solvent such as tetralin while adding a hydrogen-containing gas to the cracking reactor thereby inhibiting the formation of carbonaceous substances and precursors thereof and then hydrogenating the reaction products in the presence of a solid catalyst while adding a hydrogen-containing gas to the hydrogenating reactor thereby to convert the toluene-insoluble carbonaceous substances and precursors thereof to toluene-soluble ones, thus causing no clogging in an apparatus used.
    Type: Grant
    Filed: December 30, 1988
    Date of Patent: October 30, 1990
    Assignee: Nippon Oil Co., Ltd.
    Inventors: Junichi Kubo, Kiyoshi Kato, Tadakazu Yamashita, Masaru Sato, Hiroshi Kato
  • Patent number: 4931165
    Abstract: A catalytic hydrocracking process which comprises: (a) contacting a hydrocarbonaceous feedstock having a propensity to form heavy polynuclear aromatic compounds and a liquid recycle stream in a hydrocracking zone to convert a substantial portion of the hydrocarbonaceous components in the feedstock to lower boiling products; (b) recovering a hydrocarbon effluent from the hydrocracking zone and partially condensing the hydrocarbon effluent from the hydrocracking zone and separating the same into a lower boiling hydrocarbon product stream and an unconverted hydrocarbon stream having at least a portion boiling above about 400.degree. F. (204.degree. C.
    Type: Grant
    Filed: May 4, 1989
    Date of Patent: June 5, 1990
    Assignee: UOP
    Inventor: Tom N. Kalnes
  • Patent number: 4892644
    Abstract: A solvent extract obtained from a conventional hydrocarbon oil solvent extraction process, e.g., one employing furfural as the extraction solvent, is cooled to a temperature providing, following a secondary decantation of the cooled extract, a pseudo raffinate containing most of the non-aromatics and a pseudo extract possessing a hydro-aromatic content of H.sub.alpha hydrogen of at least 20 percent of the total hydrogen content. The pseudo extract is ideally suited as a hydrogen-donor for a variety of refinery operations such as visbreaking. The pseudo raffinate is suitable as a co-feed for such catalytic cracking operations as fluidized catalytic cracking (FCC) and thermofor catalytic cracking (TCC) and can be recycled to the extraction unit to produce more lube oil.
    Type: Grant
    Filed: October 7, 1988
    Date of Patent: January 9, 1990
    Assignee: Mobil Oil Corporation
    Inventors: Byung Choi, Grant G. Karsner, Chang-Kuei Lee, Madhava Malladi, Donald Milstein
  • Patent number: 4857168
    Abstract: A method for hydrocracking a heavy fraction oil characterized by cracking a heavy fraction oil in the presence of a hydrogen donating solvent and hydrogen gas and circulating a fraction having a specific boiling range as the circulating solvent through the cracking reactor whereby the formation of carbonaceous substances is greatly inhibited, the supply of a makeup hydrogen donating solvent is disposed with and the concentration of tetralin in the circulating solvent is maintained at a fixed or higher level.
    Type: Grant
    Filed: January 20, 1988
    Date of Patent: August 15, 1989
    Assignee: Nippon Oil Co., Ltd.
    Inventors: Junichi Kubo, Kenji Suzuki
  • Patent number: 4836909
    Abstract: A process of thermally cracking a heavy petroleum oil wherein the heavy petroleum oil is treated successively in a cracking furnace and then in a perfect mixing type tank reactor. The thermal cracking in the cracking furnace is performed at a temperature at the outlet of the cracking furnace of 450.degree.-520.degree. C. with a conversion of at least 60-75% of the overall conversion rate while the thermal cracking in the tank reactor is performed at a temperature of 400.degree.-450.degree. C. a pressure of from ambient pressure to 1 kg/cm.sup.2 for a period of time of less than 30 minutes but not less than 10 minutes while feeding steam having a temperature of 435.degree.-700.degree. C. to the tank reactor in an amount of 8-20% by weight of the heavy petroleum oil fed to the cracking furnace.
    Type: Grant
    Filed: September 9, 1987
    Date of Patent: June 6, 1989
    Assignee: Research Association for Residual Oil Processing
    Inventors: Itaru Matsuo, Yuzo Takahashi, Hideo Hashimoto, Toru Takatsuka, Takeru Iimori, Hitoshi Maekawa, Tamotsu Ito, Yoshihiko Shohji, Ryuzo Watari, Hiroshi Aida
  • Patent number: 4814065
    Abstract: Disclosed is a method for accelerating the exchange of hydrogen between a hydrogen donor and a petroleum resid to be subjected to cracking, visbreaking, or coking. Acceleration is effected by incorporating an aqueous solution of ammoniun sulfide into the mixture of donor and resid and subjecting the mixture to a period of heat-soaking at an elevated temperature.
    Type: Grant
    Filed: September 25, 1987
    Date of Patent: March 21, 1989
    Assignee: Mobil Oil Company
    Inventor: Lillian A. Rankel
  • Patent number: 4661241
    Abstract: A delayed coking process having improved liquid yield and liquid product distribution relative to coke yield is characterized by the absence of heavy recycle. The coker feedstock is heated in the coker furnace and led to the coker drums where coking takes place and the vaporous effluence are passed to a fractionator from which the heavy gas oil fraction is removed as product. Process heat is conserved by indirect heat exchange of the feedstock with the coking products prior to the feedstock entering the coking furnace. A further improvement in liquid yield and selectivity is obtained by adding a solvent or diluent to the feedstock and this may be either a hydrocarbon fraction such as a coker distillate, a light gas oil or another fraction having an end point below 450.degree. C.; in addition, it may be used in conjunction with a reactive or nonreactive gas such as nitrogen, steam, hydrogen or hydrogen sulfide.
    Type: Grant
    Filed: April 1, 1985
    Date of Patent: April 28, 1987
    Assignee: Mobil Oil Corporation
    Inventors: Michael J. Dabkowski, Madhava Malladi
  • Patent number: 4640765
    Abstract: A method for cracking a heavy fraction oil is provided in which is solved a problem as to an increase in pressure loss due to coking in a cracking tower during the treatment of heavy fraction oils containing at least 1.0 wt. % of asphaltene. The cracking tower is vertically divided into at least two portions with a partition for housing a solid catalyst having a hydrogenation function, and the divided portions are communicated with each other at the upper and lower parts of the tower. A starting heavy fraction oil, a hydrogen donative solvent, and a hydrogen-containing gas are introduced into at least one of the divided portions at the lower part thereof, and further the fluid is circulated between the divided portions. Another method for cracking heavy fraction oils is provided in which a heavy hydrocarbon oil containing at least 1.0 wt.
    Type: Grant
    Filed: August 29, 1985
    Date of Patent: February 3, 1987
    Assignee: Nippon Oil Co., Ltd.
    Inventor: Junichi Kubo
  • Patent number: 4640762
    Abstract: A process is disclosed for converting a heavy hydrocarbon oil feedstock to produce a high yield of lower-boiling hydrocarbons, wherein a residuum fraction of the effluent from a hydrogen donor diluent hydrocracking reactor is deasphalted using a low-boiling solvent and at least the highest-boiling fraction of the deasphalted oil is recycled to the hydrogen diluent hydrocracking zone.
    Type: Grant
    Filed: July 8, 1985
    Date of Patent: February 3, 1987
    Assignee: Gulf Canada Corporation
    Inventors: H. John Woods, Frank Souhrada
  • Patent number: 4615791
    Abstract: Heavy petroleum oils such as resids are subjected to visbreaking in the presence of a hydroaromatic hydrogen donor solvent having an aromatic and alpha-to-aromatic proton content each of at least 20 percent of the total solvent hydrogen. The amount of donor solvent is from 0.1 to 50, preferably 0.1 to 20, weight percent of the heavy oil feed. The visbreaking may be carried out at relatively high severities as the use of the donor solvent reduces coke formation as well as producing a product of reduced viscosity, pour point and sedimentation characteristics. Reaction severity is usually in the range of 250 to 1500 seconds ERT at 800.degree. F. (427.degree. C.) but may range up to 15000 seconds ERT. Suitable solvents may be obtained from catalytic cracking process, for example, FCC cycle oils, slurry oils and main column bottoms.
    Type: Grant
    Filed: September 3, 1985
    Date of Patent: October 7, 1986
    Assignee: Mobil Oil Corporation
    Inventors: Byung C. Choi, Benjamin Gross, Madhava Malladi
  • Patent number: 4604186
    Abstract: A process for upgrading petroleum residuums by hydrogen diluent donor visbreaking employs coking of a higher boiling fraction of the visbreaker effluent wherein the hydrogen donor is also supplied to the coker feed either by excess feed to the visbreaker or by mixing a portion with the coker feed. Controlling the quantity of hydrogen donor in the visbreaker and coker feed proportionally controls the quantity of coke produced.
    Type: Grant
    Filed: November 6, 1985
    Date of Patent: August 5, 1986
    Assignee: DM International Inc.
    Inventors: Irvin H. Lutz, Thomas M. Wilson
  • Patent number: 4604185
    Abstract: Vacuum resid and cracked residuum such as decant oil or thermal tar are processed together to reduce the ultimate yield of coke, asphalt and fuel oil. The vacuum resid is donor cracked, and the donor cracker effluent is quenched with decant oil or thermal tar and then fractionated. Fractionator bottoms are vacuum distilled, and vacuum tower overheads are hydrogenated to produce donor for the donor cracker.
    Type: Grant
    Filed: July 2, 1985
    Date of Patent: August 5, 1986
    Assignee: Conoco Inc.
    Inventors: James R. McConaghy, Jr., Ardis L. Anderson
  • Patent number: 4592830
    Abstract: A hydrogen donor solvent selected from the group consisting of a full range crude oil and an atmospheric topped crude oil is used in a hydrovisbreaking process. The heavy fraction being processed is heated in the presence of hydrogen and the solvent under suitable hydrovisbreaking conditions. As a result, the amount of heavies in the feed to the hydrovisbreaking process is substantially reduced.
    Type: Grant
    Filed: March 22, 1985
    Date of Patent: June 3, 1986
    Assignee: Phillips Petroleum Company
    Inventors: Jerald A. Howell, Donald C. Tabler, Donald M. Haskell
  • Patent number: 4585545
    Abstract: An aromatic gasoline component is prepared in a multi-step petroleum refining process starting with a heavy carbometallic petroleum fraction which is catalytically cracked to yield a light catalytic cycle oil which, in turn, is mildly hydrogenated to produce a partially saturated bicyclic hydrocarbon fraction which itself is catalytically cracked to yield a monoaromatic hydrocarbon fraction from which is recovered a gasoline product. The bicyclic hydrocarbons are converted to monoaromatics by selective partial saturation and ring scission.
    Type: Grant
    Filed: December 7, 1984
    Date of Patent: April 29, 1986
    Assignee: Ashland Oil, Inc.
    Inventors: Robert E. Yancey, Jr., William P. Hettinger, Jr.
  • Patent number: 4514282
    Abstract: Heavy hydrocarbonaceous oil is cracked by hydrogen donor diluent cracking, and pitch from the donor cracking step is recycled. The pitch is catalytically hydrotreated before it is recycled. Hydrotreating the pitch enables complete conversion of the 950.degree. F.+ fraction of heavy hydrocarbonaceous oil to 950.degree. F.- distillate.
    Type: Grant
    Filed: July 21, 1983
    Date of Patent: April 30, 1985
    Assignee: Conoca Inc.
    Inventors: Paul C. Poynor, Joseph W. Burdett
  • Patent number: 4504378
    Abstract: A process for reducing the molecular weight of hydrocarbons using NaAlCl.sub.4 is provided wherein the hydrogen to carbon ratio of the product slate is approximately the same as the feed material, comprising contacting the feed material with a molten salt of NaAlCl.sub.4 having a ratio of aluminum chloride to sodium chloride of at least 1:1, preferably at a temperature of at least 660.degree. F., and at a pressure above atmospheric, preferably from about 50 psia to about 2000 psia, depending upon the product slate desired. According to the present invention, heavy hydrocarbons are converted to a liquid product slate wherein substantially all of the liquid components exhibit a molecular weight lower than the molecular weight range exhibited by the hydrocarbon feedstock.
    Type: Grant
    Filed: February 18, 1983
    Date of Patent: March 12, 1985
    Assignee: Marathon Oil Company
    Inventor: Mark A. Plummer
  • Patent number: 4500415
    Abstract: A process is disclosed for converting a non-distillable residue of a mixed-base or paraffin-base crude hydrocarbon oil to a distillable precursor for motor fuels and/or petrochemical products which comprises donor solvent hydrovisbreaking said residue in a hydrovisbreaking zone in the presence of a circulated hydrogen donor solvent at a temperature in the range of 380.degree. to 480.degree. C.
    Type: Grant
    Filed: January 27, 1983
    Date of Patent: February 19, 1985
    Assignee: Metallgesellschaft Aktiengesellschaft
    Inventors: Thomas Simo, Karl-Heniz Eisenlohr, Hans-Hermann Puxbaumer
  • Patent number: 4487687
    Abstract: Heavy hydrocarbon oil to be processed is subjected to a treatment at elevated temperature and superatmospheric pressure in the presence of dispersed solids and molecular hydrogen and recycled hydrogen donor oil. By this treatment, a certain part of the asphaltenes absorbed on the solids may be coked. The product of that donor solvent hydrovisbreaking (DSV) is distilled. The distillate or distillates is or are catalytically hydrogenated. The visbreaking residue is used for the production of hydrogen. The hydrogenated products are separated in hydrocarbon fractions and are then processed further to fuels and/or petrochemical products and a part of the hydrogenated products is recycled as inherent donor solvent.
    Type: Grant
    Filed: January 25, 1982
    Date of Patent: December 11, 1984
    Assignee: Metallgesellschaft AG
    Inventors: Thomas Simo, Karl-Heinz Eisenlohr
  • Patent number: 4485004
    Abstract: A process is disclosed in which a heavy hydrocarbon oil is converted to lighter products by hydrocracking in the presence of a hydrogen donor material boiling from 200.degree. C. to 300.degree. C. and a particulate hydrogenation catalyst comprising one of cobalt, molybdenum, nickel, tungsten and mixtures thereof.
    Type: Grant
    Filed: September 7, 1982
    Date of Patent: November 27, 1984
    Assignee: Gulf Canada Limited
    Inventors: Ian P. Fisher, Nicolas G. Samman
  • Patent number: 4465584
    Abstract: Coal, petroleum residuum and similar carbonaceous feed materials are subjected to hydroconversion in the presence of molecular hydrogen to produce a hydroconversion effluent which is then subjected to one or more separation steps to remove lower molecular weight liquids and produce a heavy bottoms stream containing high molecular weight liquids and unconverted carbonaceous material. The viscosity of the bottoms streams produced in the separation step or steps is prevented from increasing by treating the feed to the separation step or steps with hydrogen sulfide gas prior to or during the separation step or steps. The viscosity of the heavy bottoms stream produced in the final separation step is also controlled by treating these bottoms with hydrogen sulfide gas.
    Type: Grant
    Filed: March 14, 1983
    Date of Patent: August 14, 1984
    Assignee: Exxon Research & Engineering Co.
    Inventors: Edward Effron, Alexis A. Giese, Gerald A. Melin
  • Patent number: 4454024
    Abstract: A slurry hydroconversion process is provided wherein a heavy hydrocarbonaceous oil, in which is dispersed a metal-contaminated, partially deactivated zeolitic cracking catalyst, is converted to lower boiling products in the presence of a molecular hydrogen-containing gas, and a hydrogen donor diluent.
    Type: Grant
    Filed: November 1, 1982
    Date of Patent: June 12, 1984
    Assignee: Exxon Research and Engineering Co.
    Inventors: Gopal H. Singhal, Gordon F. Stuntz
  • Patent number: 4451354
    Abstract: A process for upgrading a heavy hydrocarbonaceous oil is provided in which the heavy oil is hydrorefined in the presence of a hydrorefining catalyst at conditions to convert a portion of the heavy constituents of the oil, followed by cracking the hydrorefined oil in the presence of the hydrogen donor diluent. The hydrorefining and cracking stages are conducted at a relatively low hydrogen partial pressure while obtaining a high level of conversion of the heavy constituents of the oil.
    Type: Grant
    Filed: January 3, 1983
    Date of Patent: May 29, 1984
    Assignee: Exxon Research and Engineering Co.
    Inventor: Gordon F. Stuntz
  • Patent number: RE38170
    Abstract: A gas conversion process in which both hydrocarbons and hydrogen are produced from a synthesis gas feed which comprises a mixture of H2 and CO, uses hydrogen from a portion of the feed for one or more of (i) hydrocarbon synthesis catalyst rejuvenation and (ii) hydroconversion upgrading of at least a portion of the synthesized hydrocarbons. Hydrogen is produced from a slipstream of the synthesis gas fed into the hydrocarbon synthesis reactor by one or more of (i) physical separation means such as pressure swing adsorption and (ii) chemical means such as a water gas shift reactor. If a shift reactor is used due to insufficient capacity of the synthesis gas generator, physical separation means such as pressure swing adsorption will still be used to separate a pure stream of hydrogen from the shift reactor gas effluent.
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: July 1, 2003
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Charles William DeGeorge, Robert Dean Denton