By Isomerization Patents (Class 585/734)
  • Publication number: 20040192979
    Abstract: The invention relates to a novel and completely synthetic microcrystalline paraffin, said paraffin being obtained in a simple manner and with a high yield by the catalytic hydromerisation of paraffin FT comprising 20 to 105 carbon atoms. Said paraffins can be pasty to solid at room temperature and have a higher percentage of iso-paraffins than n-paraffins. Since they do not contain aromatic compounds they are particularly suitable for use in the pharmaceutical, cosmetic and food industries.
    Type: Application
    Filed: May 17, 2004
    Publication date: September 30, 2004
    Inventors: Michael Matthai, Gunter Hidebrand, Helmuth Schulze-Trautmann, Thorsten Butz
  • Patent number: 6784328
    Abstract: The invention relates to a method of selectively producing adamantanes in a production apparatus made of an inexpensive material, not having any negative influence on the natural environment. The method for producing adamantanes includes isomerizing a tricyclic saturated hydrocarbon having at least 10 carbon atoms in the presence of a metal-carrying solid acid catalyst, wherein an unsaturated bond-having compound is made to coexist along with the catalyst during the isomerization.
    Type: Grant
    Filed: March 4, 2003
    Date of Patent: August 31, 2004
    Assignee: Idemitsu Petrochemical Co., Ltd.
    Inventors: Akio Kojima, Masao Saito
  • Publication number: 20040147795
    Abstract: A process of contacting at least one isoparaffin and at least one C5 olefin in the presence of a catalyst composition under conversion conditions to provide for converting the at least one isoparaffin and the at least one C5 olefin is provided. The catalyst composition contains a heteropoly acid, zinc, and a support component.
    Type: Application
    Filed: January 24, 2003
    Publication date: July 29, 2004
    Applicant: Phillips Petroleum Company
    Inventor: Bruce B. Randolph
  • Patent number: 6759563
    Abstract: A combination isomerization and liquid phase adsorptive separation process has been developed. In this arrangement, a C5+ naphtha stream is split into a heavy hydrocarbon stream comprising normal heptane and higher boiling hydrocarbons, an isomerization and adsorption zone feed stream comprising pentanes and lower boiling hydrocarbons, and a desorbent stream containing hexanes. The isomerization and adsorption zone feed stream is combined with an isomerization section effluent to form a combined feed to an adsorptive separation section. In the adsorption separation section, normal pentanes are selectively adsorbed on an adsorbent material, and a raffinate stream comprising hexanes and isoparaffins is recovered and passed to a deisohexanizer column. A desorbent stream containing normal hexane is recovered as a sidecut from the deisohexanizer column and is combined with the desorbent stream containing the hexanes from the naphtha splitter to supply the desorbent for the adsorptive separation section.
    Type: Grant
    Filed: October 9, 2001
    Date of Patent: July 6, 2004
    Assignee: UOP LLC
    Inventor: Frederick M. Hibbs
  • Publication number: 20040077914
    Abstract: A catalyst composition and process for the conversion of linear and/or branched paraffin hydrocarbons based on the use of an ionic liquid catalyst in combination with a Brønsted Acid, which provides a catalytic composition with an increased activity compared with said ionic liquid. Under suitable reaction conditions this conversion is leading to paraffin hydrocarbon fraction with higher octane number.
    Type: Application
    Filed: September 16, 2003
    Publication date: April 22, 2004
    Inventors: John Zavilla, Konrad Herbst, Jindrich Houzvicka, Sven Ivar Hommeltoft
  • Patent number: 6717024
    Abstract: A slurry Fischer-Tropsch hydrocarbon synthesis process for synthesizing liquid hydrocarbons from synthesis gas in a synthesis reactor also hydroisomerizes the synthesized hydrocarbon liquid, which comprises the slurry liquid, in one or more lift reactors immersed in the slurry body in the synthesis reactor. A monolithic catalyst is preferably used for the hydroisomerization, and slurry circulation up through the lift reactors from the surrounding slurry body, is achieved at least in part by the lift action of the hydroisomerization treat gas. Preferably, catalyst particles are also removed before the slurry contacts the catalyst. Hydroisomerization occurs while the synthesis reactor is producing hydrocarbons, without interfering with the synthesis reaction. A gas bubble reducing downcomer may be used to produce and feed the gas bubble reduced slurry into the lift reactor, thereby providing a hydraulic head assist in the slurry circulation up through and out of the lift reactor.
    Type: Grant
    Filed: November 6, 2001
    Date of Patent: April 6, 2004
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Robert Jay Wittenbrink, Charles John Mart, Janet Renee Clark, Jennifer Schaefer Feeley
  • Patent number: 6695965
    Abstract: A wax blending process is disclosed which retains the desirable properties of a Fischer-Tropsch wax, while adjusting the hardness of the wax to within to a desired range. The invention utilizes a synergistic effect between hard virgin Fischer-Tropsch wax and softer mildly isomerized Fischer-Tropsch wax in a blending process which allows the artisan to adjust the hardness of a wax product to within desired ranges. The process involves passing a Fischer-Tropsch wax over a hydroisomerization catalyst under predetermined conditions including relatively mild temperatures such that chemical conversions (e.g., hydrogenation and mild isomerization) take place while less than 10% boiling point conversion (hydrocracking) occurs, thus preserving overall isomerized wax yield.
    Type: Grant
    Filed: April 4, 2000
    Date of Patent: February 24, 2004
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Robert J. Wittenbrink, Daniel Francis Ryan
  • Publication number: 20040020827
    Abstract: The present invention relates to new crystalline molecular sieve SSZ-64 prepared using a N-cyclobutylmethyl-N-ethylhexamethyleneiminium cation or N-cyclobutylmethyl-N-ethylheptamethyleneiminium cation structure directing agent, and processes employing SSZ-64 in a catalyst.
    Type: Application
    Filed: August 1, 2002
    Publication date: February 5, 2004
    Inventor: Saleh Elomari
  • Patent number: 6679986
    Abstract: A catalytic support includes a substantial quantity of at least one SVI group Periodic Table metal oxide in which is incorporated silica. The mass ratio between the quantity of SVI group metal oxide and the quantity of silica it contains ranges between 5 and 70, the SVI group metal oxide is in crystalline form, and the specific surface of the support is greater than or equal to 160 m2/g.
    Type: Grant
    Filed: May 16, 2000
    Date of Patent: January 20, 2004
    Assignee: Total Raffinage Distribution S.A.
    Inventors: Pedro Da Silva, Marc Bisson, Alain Milan, Sebastien Decker, Joeri Denayer
  • Publication number: 20040010175
    Abstract: A process of contacting at least one feed hydrocarbon, containing three to about seven carbon atoms per molecule, and ethylene in a hydrocarbon-containing fluid in the presence of a catalyst composition to provide at least one product hydrocarbon isomer containing about four to about nine carbon atoms per molecule is provided. The at least one feed hydrocarbon can be selected from paraffins, isoparaffins, and the like and combinations thereof. The catalyst composition contains a hydrogen halide component, a sulfone component, and a metal halide component.
    Type: Application
    Filed: July 11, 2002
    Publication date: January 15, 2004
    Inventors: Bruce B. Randolph, James B. Kimble, Marvin M. Johnson
  • Patent number: 6652738
    Abstract: The invention pertains to a process for the hydroprocessing of a hydrocarbon feedstock wherein said feedstock is contacted at hydroprocessing conditions with a catalyst composition which comprises bulk catalyst particles which comprise at least one Group VIII non-noble metal and at least two Group VIB metals. The Group VIII and Group VIB metals comprise from about 50 wt. % to about 100 wt. %, calculated as oxides, of the total weight of the bulk catalyst particles. The metals are present in the catalyst composition in their oxidic and/or sulfidic state. The catalyst composition has an X-ray diffraction pattern in which the characteristic full width at half maximum does not exceed 2.5° when the Group VIB metals are molybdenum, tungsten, and, optionally, chromium, or does not exceed 4.0° when the Group VIB metals are molybdenum and chromium or tungsten and chromium.
    Type: Grant
    Filed: January 16, 2003
    Date of Patent: November 25, 2003
    Assignee: Akzo Nobel N.V.
    Inventors: Sonja Eijsbouts, Bob Gerardus Oogjen, Harmannus Willem Homan Free, Marinus Bruce Cerfontain, Kenneth Lloyd Riley, Stuart Leon Soled, Sabato Miseo
  • Patent number: 6652735
    Abstract: A process for isomerization dewaxing of a hydrocarbon feed which includes contacting the hydrocarbon feed with a large pore size, small crystal size, crystalline molecular sieve and an intermediate pore size, small crystal size, crystalline molecular sieve to produce a dewaxed product with a reduced pour point and a reduced cloud point. In a preferred embodiment, the feed is contacted with the molecular sieves sequentially, first with the large pore sieve followed by the intermediate pore sieve.
    Type: Grant
    Filed: April 26, 2001
    Date of Patent: November 25, 2003
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Thomas F. Degnan, Philip J. Angevine
  • Patent number: 6649803
    Abstract: A slurry Fischer-Tropsch hydrocarbon synthesis process for synthesizing liquid hydrocarbons from synthesis gas in a synthesis reactor also hydroisomerizes the synthesized hydrocarbons in one or more external lift reactor hydroisomerizing loops outside of the reactor, but which are a part of the reactor. A monolithic catalyst is used for the hydroisomerization and slurry circulation between the synthesis reactor and one or more loops is achieved, at least in part, by the lift action of a hydrogen treat gas injected into each loop.
    Type: Grant
    Filed: November 6, 2001
    Date of Patent: November 18, 2003
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Charles John Mart, Robert Jay Wittenbrink, Janet Renee Clark, Jennifer Schaefer Feeley
  • Publication number: 20030187316
    Abstract: A process for the production of triptane, said process comprising: isomerising a hydrocarbon feedstock by containing said feedstock with an isomerisation catalyst at a reaction temperature of −50 to 25° C., and a contact time of 0.01 to 150 hours, such that the triptane selectivety of the isomerisation reaction is at least 5% as a proportion of said hydrocarbon feedstock.
    Type: Application
    Filed: May 29, 2003
    Publication date: October 2, 2003
    Inventors: Willem Marco Boesveld, Paul Greenough
  • Patent number: 6620312
    Abstract: A method for producing a lube basestock from a waxy feed is disclosed in which a feed containing to 50 wt % or more of wax is hydrotreated and stripped to lower the nitrogen and sulfur content of the feed. The feed is then hydroisomerized under conditions to 370° C. hydrocatalytically dewaxed with a catalyst comprising a mixture of a catalytically active metal on a zeolite dewaxing catalyst and an amorphous catalyst, or alternatively is solvent dewaxed and then hydrocatalytically dewaxed with the just described catalyst.
    Type: Grant
    Filed: October 25, 2000
    Date of Patent: September 16, 2003
    Assignee: Exxon Research and Engineering Company
    Inventors: William John Murphy, Ian Alfred Cody, Bernard George Silbernagel
  • Patent number: 6602402
    Abstract: An improved process for producing very high quality base stock and for simultaneous production of high quality middle distallates, comprising successive hydroisomerisation and catalystic dewaxing steps wherein hydroisomerisation is carried out in the presence of a catalyst containing at least one noble metal deposited on an amorphous acidic support, the dispersion of the metal being less than 20%. The support is preferably an amorphous silica-alumina. Catalytic dewaxing is carried out in the presence of a catalyst containing at least one hydrodehydrogenating element (group VIII) and at least one molecular sieve (preferably zeolite). The sieve is preferable selected from NU-10, EU-1, EU-13, zeolite and ferrierite.
    Type: Grant
    Filed: May 1, 2000
    Date of Patent: August 5, 2003
    Assignee: Institut Francais du Petrole
    Inventors: Eric Benazzi, Nathalie Marchal-George, Tivadar Cseri, Pierre Marion, Christophe Gueret, Slavik Kasztelan
  • Publication number: 20030130554
    Abstract: Process for the hydroisomerization of long-chain n-paraffins which comprises isomerizing n-paraffins having a number of carbon atoms higher than 15 in the presence of hydrogen and a hydroisomerization catalyst which comprises:
    Type: Application
    Filed: October 9, 1998
    Publication date: July 10, 2003
    Inventors: CRISTINA FLEGO, VINCENZO CALEMMA
  • Patent number: 6583330
    Abstract: New catalysts that contain heteropolyanions of the 12-tungstophosphoric acid or the 12-tungstomolybdic acid, and, for some of these, at least one metal of group VIII, and that are deposited on substrates that develop a specific surface area and a high pore volume, such as zirconium oxide (ZrO2), silicas, silica-aluminas or aluminas, are used in particular in isomerization of paraffinic fractions that contain in large part n-paraffins that have, for example, 4 to 8 carbon atoms per molecule and in aliphatic alkylation of isoparaffins (for example isobutane and/or isopentane) by at least one olefin that comprises, for example, 2 to 6 carbon atoms per molecule (C2 to C6).
    Type: Grant
    Filed: June 26, 2000
    Date of Patent: June 24, 2003
    Assignee: Institut Francais du Petrole
    Inventors: Christine Travers, Maryline Delage, Eric Benazzi, Jean-François Joly
  • Publication number: 20030109767
    Abstract: A process for the conversion of paraffin hydrocarbon feed stock via skeletal isomerisation by contacting this feed with a catalyst comprised of an ionic liquid formed from an N-containing heterocyclic and/or N-containing aliphatic organic cation and an inorganic anion derived from metal halides.
    Type: Application
    Filed: November 8, 2002
    Publication date: June 12, 2003
    Inventors: Tamara Vladimirovna Vasina, Leonid Modestovich Kustov, Vladislav Anatol?apos;evich Ksenofontov, Yurii Egorovich Zubarev, Jindrich Houzvicka, John Zavilla
  • Patent number: 6573417
    Abstract: The fractional distillation performed as part of the isomerization of C5-C6 paraffins is heat integrated. A portion of a sidedraw recycle stream is employed to cool the feed to a deisohexanizer column and then returned to a lower portion of the column. This reduces the reflux demand of the column and the operating cost of the process.
    Type: Grant
    Filed: November 5, 2001
    Date of Patent: June 3, 2003
    Assignee: UOP LLC
    Inventor: Lynn H. Rice
  • Patent number: 6570047
    Abstract: A slurry Fischer-Tropsch hydrocarbon synthesis process for synthesizing liquid hydrocarbons from synthesis gas, in a hydrocarbon synthesis reactor, also hydroisomerizes the synthesized hydrocarbons in one or more external downcomer reactor hydroisomerizing loops outside of the reactor, but which are a part of the synthesis reactor. A monolithic catalyst is used for the hydroisomerization, and slurry circulation between the synthesis reactor and the one or more hydroisomerization loops is achieved, at least in part, by density-difference driven hydraulics created by removing gas bubbles from the slurry passed into the loop. Preferably, catalyst particles are also removed before the slurry contacts the monolithic hydroisomerization catalyst.
    Type: Grant
    Filed: November 6, 2001
    Date of Patent: May 27, 2003
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Charles John Mart, Robert Jay Wittenbrink, Janet Renee Clark, Jennifer Schaefer Feeley
  • Patent number: 6566569
    Abstract: A process for preparing a C4- product stream and a C6+ product stream is disclosed. The process involves contacting a C5 containing paraffinic feedstock with a catalyst that includes a hydrogenation/dehydrogenation catalyst and an olefin metathesis catalyst under conditions which dehydrogenate the paraffins to olefins. The olefins are then metathesized and rehydrogenated to provide a product stream. A C4- fraction and a C6+ fraction can each be isolated from the product stream. The C4- fraction can be used, for example, in an alkylation reaction to provide compounds useful in gasoline compositions. Unconverted C5 paraffins can be recycled. The C6+ fraction can be used, for example, as solvents. Alternatively, they can be isomerized to form gasoline additives, or can be converted to aromatic compounds via reforming, for example, using conventional reforming techniques, preferably using the AROMAX™ process or traditional rheniforming conditions.
    Type: Grant
    Filed: June 23, 2000
    Date of Patent: May 20, 2003
    Assignee: Chevron U.S.A. Inc.
    Inventors: Cong-Yan Chen, Dennis J. O'Rear, Scott R. Brundage
  • Publication number: 20030088138
    Abstract: A slurry Fischer-Tropsch hydrocarbon synthesis process for synthesizing liquid hydrocarbons from synthesis gas in a synthesis reactor also hydroisomerizes the synthesized hydrocarbons in one or more external lift reactor hydroisomerizing loops outside of the reactor, but which are a part of the reactor. A monolithic catalyst is used for the hydroisomerization and slurry circulation between the synthesis reactor and one or more loops is achieved, at least in part, by the lift action of a hydrogen treat gas injected into each loop.
    Type: Application
    Filed: November 6, 2001
    Publication date: May 8, 2003
    Inventors: Charles John Mart, Robert Jay Wittenbrink, Janet Renee Clark, Jennifer Schaefer Feeley
  • Publication number: 20030088137
    Abstract: A slurry Fischer-Tropsch hydrocarbon synthesis process for synthesizing liquid hydrocarbons from synthesis gas, in a hydrocarbon synthesis reactor, also hydroisomerizes the synthesized hydrocarbons in one or more external downcomer reactor hydroisomerizing loops outside of the reactor, but which are a part of the synthesis reactor. A monolithic catalyst is used for the hydroisomerization, and slurry circulation between the synthesis reactor and the one or more hydroisomerization loops is achieved, at least in part, by density-difference driven hydraulics created by removing gas bubbles from the slurry passed into the loop. Preferably, catalyst particles are also removed before the slurry contacts the monolithic hydroisomerization catalyst.
    Type: Application
    Filed: November 6, 2001
    Publication date: May 8, 2003
    Inventors: Charles John Mart, Robert Jay Wittenbrink, Janet Renee Clark, Jennifer Schaefer Feeley
  • Patent number: 6555725
    Abstract: A slurry Fischer-Tropsch hydrocarbon synthesis process for synthesizing liquid hydrocarbons from synthesis gas in a hydrocarbon synthesis reactor also hydroisomerizes the synthesized hydrocarbon liquid, which comprises the slurry liquid, in one or more downcomer reactors immersed in the slurry body in the synthesis reactor. A monolithic catalyst is preferably used for the hydroisomerization, and slurry circulation down through the downcomer reactors from the surrounding slurry body, is achieved at least in part by density-difference driven hydraulics created by removing gas bubbles from the slurry passed into the downcomers. Preferably, catalyst particles are also removed before the slurry contacts the catalyst. Hydroisomerization occurs while the synthesis reactor is producing hydrocarbons, without interfering with the hydrocarbon synthesis reaction.
    Type: Grant
    Filed: November 6, 2001
    Date of Patent: April 29, 2003
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Robert Jay Wittenbrink, Charles John Mart, Janet Renee Clark, Jennifer Schaefer Feeley
  • Publication number: 20030075477
    Abstract: The present invention discloses a process for producing a low haze heavy base oil including the steps of: (a) providing a heavy waxy feed stream having an initial boiling point greater than 900° F. and having a paraffin content of at least 80%; (b) separating the heavy feed stream into a heavy fraction and a light fraction by a deep cut distillation; and (c) hydroisomerizing the light fraction to produce a low haze heavy base oil.
    Type: Application
    Filed: October 17, 2001
    Publication date: April 24, 2003
    Inventor: Stephen J. Miller
  • Publication number: 20030060673
    Abstract: A process for isomerising a feed comprising normal paraffins containing 5 to 8 carbon atoms per molecule as a major portion in the presence of hydrogen is characterized in that the sum of the amounts of normal paraffins containing 7 and 8 carbon atoms per molecule contained in the feed is in the range 2% to 90% by weight with respect to the feed, and in that said feed is treated in at least one reaction zone containing at least one catalyst in a fixed bed, said catalyst comprising a support, at least one halogen and at least one group VIII metal, the reaction being carried out at a temperature in the range 30° C. to 150° C.
    Type: Application
    Filed: November 4, 2002
    Publication date: March 27, 2003
    Applicant: Institute Francais du Petrole
    Inventors: Eric Benazzi, Herve Cauffriez, Olivier Clause, Jean-Francois Joly, Christine Travers
  • Publication number: 20030050523
    Abstract: A catalyst and process is disclosed to selectively upgrade a paraffinic feedstock to obtain an isoparaffin-rich product for blending into gasoline. The catalyst comprises a support of a sulfated oxide or hydroxide of a Group IVB (IUPAC 4) metal, a first component of at least one lanthanide element or yttrium component, which is preferably ytterbium, and at least one platinum-group metal component which is preferably platinum.
    Type: Application
    Filed: August 29, 2001
    Publication date: March 13, 2003
    Inventors: Ralph D. Gillespie, Michelle J. Cohn
  • Patent number: 6515033
    Abstract: An integrated process for producing a hydrocarbon stream including C5-20 normal and iso-paraffins is disclosed. The process involves isolating a non-sulfur containing methane stream and a sulfur-containing C5+ stream from a natural gas source. The methane stream is converted to syngas and further reacted to form a higher molecular weight hydrocarbon product stream. The C5-20 hydrocarbons in that product stream are hydroprocessed along with at least a portion of the C5+ stream from the natural gas source. The presence of sulfur in the C5+ stream minimizes the hydrogenolysis that would otherwise occur if the C5-20 hydrocarbons were hydroprocessed without added sulfur-containing compounds or other hydrocracking suppressants. The result is an improved yield of C5-20 hydrocarbons relative to when the hydroprocessing step does not include hydrocracking suppressants.
    Type: Grant
    Filed: May 11, 2001
    Date of Patent: February 4, 2003
    Assignee: Chevron U.S.A. Inc.
    Inventors: Richard O. Moore, Jr., Roger D. Van Gelder
  • Patent number: 6515034
    Abstract: An integrated process for producing a hydrocarbon stream, preferably including predominantly C5-20 normal and iso-paraffins, is disclosed. The process involves isolating a C4− stream and, optionally a C5+ stream (“natural gas condensate”) from a natural gas source. The C4− stream is converted to syngas, and the syngas used in a hydrocarbon synthesis process, for example, Fischer-Tropsch synthesis. In one embodiment, one or more fractions from the hydrocarbon synthesis are blended with one or more crude oil derived fractions, and, optionally, the natural gas condensate, such that the overall sulfur content of the blend is less than about 200 ppm. If necessary, the crude oil fractions and/or natural gas condensate can be treated to lower the sulfur content so that the blend has an acceptable sulfur level. The fraction from the hydrocarbon synthesis may include, for example, C5-20 hydrocarbons, C20+ hydrocarbons, or C5+ hydrocarbons.
    Type: Grant
    Filed: May 11, 2001
    Date of Patent: February 4, 2003
    Assignee: Chevron U.S.A. Inc.
    Inventors: Richard O. Moore, Jr., Roger D. Van Gelder
  • Patent number: 6515032
    Abstract: An integrated process for producing a hydrocarbon stream including C5-20 normal and iso-paraffins is disclosed. A de-sulfurized methane-rich stream and a natural gas condensate are isolated from the natural gas source. The methane-containing stream is converted into syngas, which is then subjected to a hydrocarbon synthesis process, for example, Fischer-Tropsch synthesis. One or more fractions from the hydrocarbon synthesis are blended with the natural gas condensate for co-hydroprocessing, where the blended stream includes less than about 200 ppm sulfur. Olefins and oxygenates are hydrotreated to form paraffins. Paraffins are subjected to hydroisomerization conditions to form isoparaffins. Hydrocarbons with chain lengths above a desired value, for example, C24, are hydrocracked. The hydrogenolysis that would otherwise form undesired C1-4 fractions is minimized by judicious selection of noble metal catalysts.
    Type: Grant
    Filed: May 11, 2001
    Date of Patent: February 4, 2003
    Assignee: Chevron U.S.A. Inc.
    Inventors: Richard O. Moore, Jr., Roger D. Van Gelder
  • Publication number: 20030010675
    Abstract: Light oil for reduced particulate emission which minimizes both the SOF and ISF of particulate matter emitted from a diesel engine is provided. The light oil for reduced particulate, (especially reduced SOF) emission comprises hydrocarbons, with the content of the distillation residue at 320° C. being 3% by volume or less in a distillation test according to ASTMD86-90. The light oil for reduced particulate (especially reduced soot) emission comprises straight chain paraffin, wherein when hydrocarbons except straight chain paraffin are mainly composed of branched chain paraffin and/or naphthene, their contents are 2% by volume or less, and when hydrocarbons except straight chain paraffin in the fuel are mainly composed of aromatics, their contents are 1% by volume or less.
    Type: Application
    Filed: November 6, 1998
    Publication date: January 16, 2003
    Inventors: TADAO OGAWA, MINORU YAMAMOTO, SHI-AKI HYODO, MASAMI YAMAMOTO, MASANORI OKADA, JUN-ICHI MATSUDAIRA, YOSHIO FUJIMOTO
  • Patent number: 6495028
    Abstract: A process for catalytic conversion of hydrocarbon feedstock to produce isobutane and isoparaffin-enriched gasoline which comprises two different reactions, the preheated feedstock is contacted with hot regenerated catalyst in the lower part of a reactor with the result that catalytic cracking reaction takes place, and the mixture of vapors and the coke deposited catalyst are up-flowed and enter into a suitable reaction environment with the result that isomerization and hydrogen transfer reaction take place. The produced LPG has an isobutane content of about 20 wt % to about 40 wt % and the produced gasoline contains isoparaffin content of about 30 wt % to about 45 wt % and olefin content of less than 30 wt %. RON and MON of the gasoline are 90˜93 and 80˜84 respectively.
    Type: Grant
    Filed: April 21, 2000
    Date of Patent: December 17, 2002
    Assignees: China Petroleum Corporation, Research Institute of Petroleum Processing
    Inventors: Youhao Xu, Jiushun Zhang, Yinan Yang, Jun Long, Xieqing Wang, Zaiting Li, Raichi Zhang
  • Patent number: 6455474
    Abstract: Discloses environmentally friendly, low temperature base oils and drilling fluids. The drilling fluid is constituted of one or more of weighting agents, emulsifiers, wetting agents, viscosifiers, fluid loss control agents, proppants, and other particulates such as used in a gravel pack, emulsified with a paraffinic solvent composition which forms a continuous oil phase, or water-in-oil invert phase. The solvent composition is constituted of a mixture of C10-C24 n-paraffins and isoparaffins having an isoparaffin:n-paraffin molar ratio ranging from about 0.5:1 to about 9:1, the isoparaffins of the mixture contain greater than 30 percent, preferably from about 30 percent to about 50 percent, of mono-methyl species, and greater than 30 percent, preferably from about 30 percent to about 50 percent of multi-methyl branched species and isoparaffins which contain one or more branches of carbon number higher than methyl, based on the total weight of the isoparaffins in the mixture.
    Type: Grant
    Filed: April 7, 2000
    Date of Patent: September 24, 2002
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Robert Jay Wittenbrink, Charles John Mart, Daniel Francis Ryan, Bruce Randall Cook
  • Patent number: 6420618
    Abstract: A premium synthetic lubricating oil base stock having a high VI and low pour point is made by hydroisomerizing a Fischer-Tropsch synthesized waxy, paraffinic feed wax and then dewaxing the hydroisomerate to form a 650-750° F.+ dewaxate. The waxy feed has an initial boiling point in the range of about 650-750° F., from which it continuously boils up to at least 1050° F. and has a T90−T10 temperature difference of at least 350° F. The feed is preferably hydroisomerized without any pretreatment, other than optional fractionation. The 650-750° F.+ dewaxate is fractionated into two or more base stocks of different viscosity.
    Type: Grant
    Filed: April 28, 2000
    Date of Patent: July 16, 2002
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Paul J. Berlowitz, Jacob J. Habeeb, Robert J. Wittenbrink
  • Patent number: 6416657
    Abstract: A method for the isomerization of a hydrocarbonic charge containing a substantial quantity of paraffin base hydrocarbons with 5 or 6 carbon atoms and a benzene content that is greater than or equal to 2% by weight, in which the charge to be treated passes, in the presence of hydrogen, at a total pressure greater than or equal to 10.105 Pa (10 bars) and at an average temperature ranging between 100 and 200° C., through at least one reactor (5) containing a catalyst. An adjunctive fluid is introduced in the upstream section of the reaction zone; a fluid that at 40° C. and under atmospheric pressure (1.0134.105 Pa), is in a gaseous phase and has a density that is less than or equal to that of the normal-pentane taken into account under the same conditions.
    Type: Grant
    Filed: March 31, 1999
    Date of Patent: July 9, 2002
    Assignee: Total Raffinage Distribution S.A.
    Inventors: Marc Fersing, Pedro Nascimento
  • Patent number: 6410814
    Abstract: A process for synthesis of lower isoparaffins from synthesis gas that is a mixture of hydrogen and carbon monoxide, wherein straight chain hydrocarbons are synthesized while isoparaffins and isoolefins are also produced through decomposition of hydrocarbons having a higher carbon number by use of a solid acid catalyst in the first stage, and isoparaffins are synthesized in the second stage. The straight chain hydrocarbons are produced by contacting the synthesis gas with a Fischer-Tropsch synthesis catalyst that is mixed with a solid acid catalyst for mainly hydrocracking long chain hydrocarbons. The isoparaffins are produced by contacting the straight chain hydrocarbons synthesized in the first stage, with a mixture of a hydrogenation catalyst for hydrogenating olefins and a solid acid catalyst for hydrocracking and isomerizing the straight chain hydrocarbons.
    Type: Grant
    Filed: April 3, 2001
    Date of Patent: June 25, 2002
    Assignees: Toyota Jidosha Kabushiki Kaisha, Genesis Research Institute, Inc.
    Inventors: Kaoru Fujimoto, Noritatsu Tsubaki
  • Patent number: 6407303
    Abstract: Construction and operational costs of simulated moving bed adsorptive separation process units are reduced by recovering desorbent from both the extract and raffinate streams of the process in a single integrated fraction column. Both streams are fractionated to recover desorbent, which is removed at one end of a dividing wall column, while separate extract and raffinate products are removed from the other end of the column. A specific embodiment includes the use of the integrated fractionation column in an isomerization application.
    Type: Grant
    Filed: November 10, 2000
    Date of Patent: June 18, 2002
    Assignee: UOP LLC
    Inventors: Dennis E. O'Brien, Lynn H. Rice
  • Patent number: 6395950
    Abstract: Construction and operational costs of recovering the high-octane components of an isomerization raffinate product of a simulated moving bed adsorptive separation process units are reduced by employing a dividing wall column to perform the separation. The raffinate product stream is passed into the column at an intermediate point on the first side of the dividing wall, with the column delivering the low-octane raffinate components as a sidedraw from the opposite side of the dividing wall. A stream of higher octane components are removed both as an overhead stream and a bottoms stream. The sidedraw may be recycled to the isomerization zone.
    Type: Grant
    Filed: November 10, 2000
    Date of Patent: May 28, 2002
    Assignee: UOP LLC
    Inventor: Lynn H. Rice
  • Patent number: 6383366
    Abstract: Waxy feeds are treated under hydroisomerization conditions to produce good yields of an isomerate product of high VI by using a silica-alumina based catalyst in which the silica-alumina has a pore volume less of 0.99 ml/gm (H2O), an alumina content in the range of 35 to 55 wt % and an isoelectric point in the range of 4.5 to 6.5. A lube fraction of the isomerate is dewaxed to provide a lube basestock of high VI. The silica-alumina may be modified with a rare earth oxide or yttria or boria or magnesia in which instance the modified catalyst has an isoelectric point greater than but no more than 2 points greater than base the silica-alumina.
    Type: Grant
    Filed: November 14, 2000
    Date of Patent: May 7, 2002
    Assignee: Exxon Research and Engineering Company
    Inventors: Kenneth Lloyd Riley, William John Murphy, Ian Alfred Cody, Stuart Leon Soled, Gary Brice McVicker, Sabato Miseo
  • Patent number: 6380452
    Abstract: A process for recovering halides from hydrocarbon containing streams is disclosed using a sulfonated hexafluro bis-A-polysulfone membrane of polymers and copolymers having the polymer repeat unit of the formula: in the polymer or copolymer. This process is applicable to recovering and recycling hydrogen chloride, which is used as a catalytic promoter, in hydrocarbon conversion processes such as isomerization and alkylation.
    Type: Grant
    Filed: December 6, 2000
    Date of Patent: April 30, 2002
    Assignee: UOP LLC
    Inventors: Mark M. Davis, William B. Dolan, Robert J. Schmidt, Paul J. Kuchar
  • Patent number: 6359018
    Abstract: An integrated process for producing a liquid hydrocarbon stream from Fischer-Tropsch hydrocarbon product without having to remove particulate contaminants such as catalyst fines from hot Fischer-Tropsch wax is disclosed. The process involves performing Fischer-Tropsch synthesis, preferably under conditions which favor formation of wax and heavy products (i.e., using a catalyst with high chain growth probabilities), and obtaining a waxy heavy fraction including particulate contaminants. The fraction is subjected to hydroprocessing conditions, preferably upflow hydroprocessing conditions, using a catalyst bed which, through judicious selection of hydroprocessing catalysts and/or flow conditions, permits passage of the particulate contaminants. The particulates are then removed from the upgraded liquid product, for example by filtration, distillation and/or centrifugation.
    Type: Grant
    Filed: October 27, 2000
    Date of Patent: March 19, 2002
    Assignee: Chevron U.S.A. Inc
    Inventors: Dennis J. O'Rear, Krishniah Parimi, Richard O. Moore, Jr.
  • Patent number: 6338791
    Abstract: The invention provides a high octane number gasoline pool comprises at least 2% of di-branched paraffins containing 7 carbon atoms, and a process for producing this gasoline pool by hydro-isomerizing a feed constituted by a C5 to C8 cut which comprises at least one hydro-isomerization section and at least one separation section, in which the hydro-isomerization section and at least one separation section, in which the hydro-isomerization section comprises at least one reactor.
    Type: Grant
    Filed: March 1, 2000
    Date of Patent: January 15, 2002
    Assignee: Institut Francais du Petrole
    Inventors: Karine Ragil, Sophie Jullian, Jean-Pierre Durand, GĂ©rard Hotier, Olivier Clause
  • Publication number: 20020002319
    Abstract: A process for isomerising a feed comprising normal paraffins containing 5 to 8 carbon atoms per molecule as a major portion in the presence of hydrogen is characterized in that the sum of the amounts of normal paraffins containing 7 and 8 carbon atoms per molecule contained in the feed is in the range 2% to 90% by weight with respect to the feed, and in that said feed is treated in at least one reaction zone containing at least one catalyst in a fixed bed, said catalyst comprising a support, at least one halogen and at least one group VIII metal, the reaction being carried out at a temperature in the range 30° C. to 150° C.
    Type: Application
    Filed: November 25, 1998
    Publication date: January 3, 2002
    Inventors: ERIC BENAZZI, HERVE CAUFFRIEZ, OLIVIER CLAUSE, JEAN-FRANCOIS JOLY, CHRISTINE TRAVERS
  • Patent number: 6331573
    Abstract: An integrated process for producing liquid fuels from syngas via a two-stage Fischer-Tropsch reaction is disclosed. The first stage of the Fischer-Tropsch chemistry is performed using conditions in which chain growth probabilities are relatively low to moderate, and the product of the reaction includes a relatively high proportion of low molecular (C2-8) weight olefins and a relatively low proportion of high molecular weight (C30+) waxes. The product from the first stage is fed into the second stage where the chain growth probabilities are relatively high. The wax and other paraffins produced in the first reaction are largely inert under these conditions. The light olefins compete with heavier olefins for chain initiation, and fewer chains will be initiated at C20+. With most chains initiated at C2-8, moderate chain growth probability will produce a relatively larger fraction in the C5-12 range. In this manner, wax yield is minimized.
    Type: Grant
    Filed: February 29, 2000
    Date of Patent: December 18, 2001
    Assignee: Chevron U.S.A. Inc.
    Inventor: Charles L. Kibby
  • Patent number: 6331574
    Abstract: A process for the preparation of a catalyst useful for conducting carbon monoxide hydrogenation reactions, especially Fischer-Tropsch reactions. The steps of the process begin with the activation, or reactivation, of a deactivated catalyst, or with the preparation and activation of a fresh catalyst. In accordance with the latter, the steps of the process comprise, first contacting, in one or more steps, a powder or preformed, particulate refractory inorganic support with a liquid, or solution in which there is dispersed or dissolved a compound, or salt of a catalytically active metal, or metals, to impregnate and deposit the metal, or metals, upon the support, or powder. The metal, or metals, impregnated support is calcined following each impregnation step to form oxides of the deposited metal, or metals.
    Type: Grant
    Filed: October 8, 1999
    Date of Patent: December 18, 2001
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Albert L'Vovoch Lapidus, Alla Jurievna Krylova, Michel A. Daage, Russell J. Koveal, Rocco A. Fiato
  • Patent number: 6331575
    Abstract: A process for the preparation of a catalyst useful for conducting carbon monoxide conversion reactions, especially a Fischer-Tropsch catalyst, use of the catalyst for conducting such reactions, especially Fischer-Tropsch reactions, and the composition produced by said process. In the preparation of the catalyst, a solution of a polyol is employed to impregnate and disperse a compound or salt of a catalytic metal, or metals, e.g., copper or an Iron Group metal such as iron, cobalt, or nickel, or in a preferred embodiment both a compound or salt of rhenium and a compound or salt of a catalytic metal, or metals, e.g., copper or an Iron Group metal such as iron, cobalt, or nickel onto a refractory inorganic oxide support, e.g., titania. The rhenium, when present only in small amount permits full and complete reduction of the catalytic metal, or metals, dispersed by the polyol.
    Type: Grant
    Filed: September 15, 1998
    Date of Patent: December 18, 2001
    Assignee: Exxon Research and Engineering Company
    Inventor: Charles H. Mauldin
  • Patent number: 6329434
    Abstract: The instant invention is directed to a catalytic partial oxidation (CPO) process with improved ignition comprising; (a) igniting an ignition feed comprising hydrogen, diluent and oxygen in a catalytic partial oxidation catalyst bed wherein said ignition feed has a predetermined adiabatic reaction temperature sufficient to cause said catalyst bed to ignite in a manner which prevents said catalyst bed from undergoing thermal shock, (b) modifying said ignition feed following said ignition of said catalyst bed to obtain a reaction feed comprising oxygen and hydrocarbon-reactant in a molar ratio capable of producing partial oxidation products in said catalyst bed under partial oxidation conditions, wherein said modification of said ignition feed is conducted to accomplish a predetermined heatup rate of said catalyst bed, and wherein the amount of diluent present during said modification is sufficient to control the adiabatic reaction temperature.
    Type: Grant
    Filed: April 7, 2000
    Date of Patent: December 11, 2001
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Michael Yu-Hsin Wen, Frank Hershkowitz, Robert Patrick Reynolds, Jr.
  • Patent number: 6320089
    Abstract: An improved catalyst is disclosed for the conversion of hydrocarbons. The catalyst comprises an alumina support, a Friedel-Crafts metal halide, and a platinum-group metal component, wherein the support comprises primarily eta alumina and a small amount of gamma alumina and has a defined pore-size and acidity characteristics. An isomerization process also is disclosed which is particularly effective for the conversion of C4-C7 alkanes.
    Type: Grant
    Filed: January 9, 2001
    Date of Patent: November 20, 2001
    Assignee: UOP LLC
    Inventor: Ralph D. Gillespie
  • Patent number: 6310108
    Abstract: Production of atmospheric distillate from a hydrocarbon feedstock that comprises a stage for the formation of a gas mixture that contains hydrogen and carbon monoxide, an at least partial conversion stage of the gas mixture that is obtained so as to obtain a liquid effluent that contains hydrocarbons and a gas effluent that contains carbon dioxide, a stage for treating the gas effluent under conditions that make it possible to eliminate the carbon dioxide at least partly, a first stage of fractionation of the liquid fraction, an isomerizing hydrocracking stage in the presence of hydrogen and a second fractionation stage.
    Type: Grant
    Filed: February 10, 2000
    Date of Patent: October 30, 2001
    Assignees: Institut Francais du Petrole, ENI S.p.A., AGIP Petroli S.p.A.
    Inventors: Reynald Bonneau, Mario-Gabriele Clerici, Jean-Charles Viltard