By Isomerization Patents (Class 585/734)
  • Publication number: 20110313222
    Abstract: One exemplary embodiment can be an apparatus for isomerizing a hydrocarbon stream rich in a C4 hydrocarbon and/or at least one of a C5 and C6 hydrocarbon. The apparatus can include: a first drier and a second drier adapted to receive a fluid including at least one reactant; and a reaction zone communicating with the first drier to receive the fluid including at least one reactant and with the second drier to receive the regenerant. Generally, the first drier operates at a first condition to dry the fluid including at least one reactant and the second drier operates at a second condition during regeneration with a regenerant. The regenerant is displaced from the drier using a down-flow regenerant displacement assembly.
    Type: Application
    Filed: September 1, 2011
    Publication date: December 22, 2011
    Applicant: UOP LLC
    Inventors: Bryan S. Garney, Jocelyn C. Daguio, Kurt A. Detrick, Douglas A. Becci, David J. Shecterle, John M. Krupczak, Andrew D. Mezera
  • Patent number: 8070885
    Abstract: Quenching fluid composition comprising one or more additives and a saturated base oil having a kinematic viscosity at 100° C. “K” expressed in centistokes and a viscosity index “I” wherein I is greater than 120 and K greater than 2 cSt.
    Type: Grant
    Filed: December 7, 2005
    Date of Patent: December 6, 2011
    Assignee: Shell Oil Company
    Inventor: Didier Busatto
  • Patent number: 8062613
    Abstract: An apparatus and process for isomerizing a hydrocarbon stream rich in a C4 hydrocarbon and/or at least one of a C5 and C6 hydrocarbon which includes a first drier and a second drier; and a reaction zone communicating with at least the first drier. The first drier operates at a first condition to dry the reactant and the second drier operates at a second condition during regeneration. The used regenerant remaining in the second drier after regeneration can (1) pass through a vent-to-flare assembly in a batch-wise manner; (2) pass through a downflow-depressure-to-low-pressure-device assembly in a batch-wise manner; (3) pass through a cross-over piping purge assembly to minimize upsets in the reaction and fractionation zones when the second drier is placed back in operation; or any combination of (1) (2) and/or (3) to minimize upsets in the reaction and fractionation zones when the second drier is placed back in operation.
    Type: Grant
    Filed: November 17, 2009
    Date of Patent: November 22, 2011
    Assignee: UOP LLC
    Inventors: Bryan S. Garney, Jocelyn C. Daguio, Kurt A. Detrick, David J. Shecterle, John M. Krupczak, Andrew D. Mezera, Douglas A. Becci
  • Patent number: 8048290
    Abstract: The invention relates to a process for producing base oils, comprisings the steps where feedstock selected from ketones, aldehydes, alcohols, carboxylic acids, esters of carboxylic acids and anhydrides of carboxylic acids, alpha olefins, metal salts of carboxylic acids and corresponding sulphur compounds, corresponding nitrogen compounds and combinations thereof, is subjected to a condensation step and subsequently subjected to a combined hydrodefunctionalization and isomerization step.
    Type: Grant
    Filed: June 11, 2008
    Date of Patent: November 1, 2011
    Assignee: Neste Oil Oyj
    Inventors: Pekka Knuuttila, Eija Koivusalmi, Pekka Aalto, Rami Piilola
  • Publication number: 20110237477
    Abstract: A hydrocarbon-based lubricating base oil wherein a urea adduct value is not greater than 4% by mass, a viscosity index is 100 or higher, an average of carbon atoms number is 23-31 as determined by gas chromatography distillation, a value obtained by dividing an integral value of a peak in 30 ppm by an integral value of total peaks in the range of from 0 ppm to 50 ppm for the 13C-NMR spectrum is 0.1-0.2, and a product of a value obtained by dividing an integral value of peaks attributed to tertiary carbon atoms by an integral value of total peaks in the range of from 0 ppm to 50 ppm for the 13C-NMR spectrum, and the average of carbon atoms number, is 1.8-2.5.
    Type: Application
    Filed: October 7, 2009
    Publication date: September 29, 2011
    Applicant: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Kazuo Tagawa, Shigeki Matsui
  • Publication number: 20110230685
    Abstract: The hydrocarbon-based lubricating base oil of the invention has a urea adduct value of not greater than 4% by mass, a viscosity index of 100 or greater, and a cycloparaffin content of 30-60% by mass based on the total amount of the saturated components, as measured by field desorption/ionization mass spectrometry. The hydrocarbon-based lubricating base oil of the invention allows high levels of both viscosity-temperature characteristic and low-temperature viscosity characteristic to be obtained, and exhibits excellence in terms of evaporation property and energy efficiency.
    Type: Application
    Filed: October 1, 2009
    Publication date: September 22, 2011
    Applicant: JX NIPPON OIL & ENERGY CORPORATION
    Inventor: Kazuo Tagawa
  • Patent number: 7989386
    Abstract: The invention relates to a multi-layer catalyst made from niobium for the catalytic conversion of hydrocarbons, comprising a) a support component made from a doped or undoped oxide or hydroxide of an element of the V sub-group of the periodic table, or mixtures thereof, b) a layer of a promoter compound, selected from oxygen, sulphur or phosphorus compounds of an element of the VI, VII and VIII sub-group or a phosphoxy compound and mixtures thereof and c) a layer comprising a compound of platinum metal. The invention further relates to a method for production of the catalyst and the use thereof.
    Type: Grant
    Filed: July 12, 2006
    Date of Patent: August 2, 2011
    Assignee: Sud Chemie AG
    Inventor: Friedrich Schmidt
  • Patent number: 7967973
    Abstract: The invention relates to a process for producing a new type of high-quality hydrocarbon base oil of biological origin. The process of the invention comprises ketonisation, hydrodeoxygenation, and isomerization steps. Fatty acids and/or fatty acid esters based on a biological raw material are preferably used as the feedstock.
    Type: Grant
    Filed: April 30, 2009
    Date of Patent: June 28, 2011
    Assignee: Neste Oil Oyj
    Inventors: Jukka Myllyoja, Juha Jakkula, Pekka Aalto, Eija Koivusalmi, Johan-Fredrik Selin, Juha Moilanen
  • Patent number: 7906698
    Abstract: The present invention relates to new crystalline molecular sieve SSZ-75 prepared using a tetramethylene-1,4-bis-(N-methylpyrrolidinium) dication as a structure-directing agent, and its use in catalysts for hydrocarbon conversion reactions.
    Type: Grant
    Filed: January 14, 2010
    Date of Patent: March 15, 2011
    Assignee: Chevron U.S.A. Inc.
    Inventors: Stacey Zones, Allen Burton, Theodorus Ludovicus Michael Maesen, Berend Smit, Edith Beerdsen
  • Patent number: 7875755
    Abstract: A process for increasing the light olefin production from light paraffins is presented. The process includes separating paraffins from olefin streams and separately processing the paraffins.
    Type: Grant
    Filed: November 30, 2007
    Date of Patent: January 25, 2011
    Assignee: UOP LLC
    Inventor: Timur V. Voskoboynikov
  • Publication number: 20110014109
    Abstract: Flow deflector that is capable of changing the flow direction of a fluid during passage through a duct. The duct is formed by an inner and outer duct, which creates an annular region in the duct. The flow deflector forces the fluid passing through the annular region of the duct to flow inside the inner duct, while the fluid passing through the inner duct is forced to flow through the annular region. Reactor tubes for catalytic reactors are formed by assembling tubes comprising said flow deflector and having a catalyst arranged in the inner tube.
    Type: Application
    Filed: March 5, 2009
    Publication date: January 20, 2011
    Inventors: Jesper Norsk, Esben Lauge Sørensen, Niklas Jakobsson
  • Patent number: 7803269
    Abstract: A process is provided for improving the cold flow properties of a hydrocarbon stream employing a substantially liquid-phase continuous hydroisomerization zone where the reaction zone has a substantially constant level of dissolved hydrogen throughout without the addition of additional hydrogen external to the reaction zone.
    Type: Grant
    Filed: October 15, 2007
    Date of Patent: September 28, 2010
    Assignee: UOP LLC
    Inventors: Peter Kokayeff, Laura Elise Leonard
  • Publication number: 20100210888
    Abstract: A method to isomerize one or more wet hexanes in the presence of a catalyst comprising tungsten, zirconium and a Group VIII metal is provided.
    Type: Application
    Filed: December 8, 2009
    Publication date: August 19, 2010
    Applicant: CONOCOPHILLIPS COMPANY
    Inventor: Bradley M. Taylor
  • Patent number: 7651603
    Abstract: The present invention relates to new crystalline molecular sieve SSZ-75 prepared using a tetramethylene-1,4-bis-(N-methylpyrrolidinium) dication as a structure-directing agent, and its use in catalysts for hydrocarbon conversion reactions.
    Type: Grant
    Filed: June 1, 2007
    Date of Patent: January 26, 2010
    Assignee: Chevron U.S.A. Inc.
    Inventors: Stacey I. Zones, Allen W. Burton, Jr., Theodorus Ludovicus Michael Maesen, Berend Smit, Edith Beerdsen
  • Patent number: 7638673
    Abstract: This invention relates to a process for converting a hydrocarbon feedstock, comprising the steps of (A) feeding the feedstock to a reactor or adsorption unit; (B) contacting the feedstock in the reactor or adsorption unit with a solid particulate material useful for converting the feedstock under conversion conditions; (C) withdrawing converted feedstock from the reactor; and (D) removing, under the conversion conditions for a fractional time of step (B), at least a portion of the solid particulate material while the feedstock is being fed to the reactor or adsorption unit, wherein the portion is more than 0.1 wt. % of the solid particulate material in the reactor or adsorption unit and wherein the fractional time is less than 95% of the time of step (B).
    Type: Grant
    Filed: May 4, 2005
    Date of Patent: December 29, 2009
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Dana Lynn Pilliod, Katy Conley Randall, Eric Martin Harding
  • Patent number: 7594991
    Abstract: All catalytic process for producing white oils is provided. More particularly, medicinal grade white oils are produced from a process including hydrotreating and/or hydrocracking, catalytic dewaxing followed by hydrofinishing to produce a medicinal white oil.
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: September 29, 2009
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Sylvain S. Hantzer, Eric D. Joseck, Timothy L. Hilbert, Evelino A. Ruibal, Jean-Philippe L. Andre, Thomas R. Palmer, Michael B. Carroll
  • Patent number: 7514590
    Abstract: Isomerization of a feedstream comprising C5 to C6 hydrocarbons involving charging hydrogen and the feedstream into an isomerization zone to contact an isomerization catalyst at isomerization conditions and increase the branching of the feedstream hydrocarbons to produce an isomerization effluent stream has been discovered. Without passing through a stabilizer, the isomerization effluent is passed through a product separator and a flash drum and then to an adsorptive separation zone to generate a raffinate stream enriched in branched alkanes, an extract stream enriched in normal alkanes, and at least one light ends stream. Within the adsorptive separation zone, the raffinate and the extract streams are each passed through a fractionator remove light ends and desorbent. The desorbent is recycled to the adsorptive separation zone. The remainder of the extract stream is recycled to the isomerization zone and the remainder of the raffinate stream is collected.
    Type: Grant
    Filed: March 11, 2005
    Date of Patent: April 7, 2009
    Assignee: UOP LLC
    Inventor: Lynn H. Rice
  • Patent number: 7488859
    Abstract: A method for producing adamantane includes isomerizing exo-tetrahydrodicyclopentadiene into adamantane in an acidic chloroaluminate ionic liquid composed of aluminum(III) trichloride and a quaternary ammonium halide having a quaternary ammonium cation selected from a group consisting of tetraalkylammonium, dialkylpyridinium, and trialkylimidazolium.
    Type: Grant
    Filed: June 20, 2007
    Date of Patent: February 10, 2009
    Assignee: CPC Corporation, Taiwan
    Inventors: Ming-Yu Huang, Jann-Chen Lin, Kun-Hai Lin, Jung-Chung Wu
  • Patent number: 7485768
    Abstract: Pentanes are separated from a naphtha boiling range feedstock to provide a gasoline stock having a high RON and low RVP. The isopentane is isomerized to make normal pentane and normal pentane is withdrawn as a feed, preferably for a steam cracker.
    Type: Grant
    Filed: December 15, 2005
    Date of Patent: February 3, 2009
    Assignee: UOP LLC
    Inventors: Lynn H. Rice, Nelson A. Cusher
  • Publication number: 20090012342
    Abstract: Process for reducing the cloud point of a base oil having a kinematic viscosity at 100° C. of greater than 10 cSt by separating the molecules inferring the high cloud point from the base oil by means of a membrane separation wherein the feed is separated into a a permeate as the base oil having the reduced cloud point and a retentate.
    Type: Application
    Filed: October 11, 2005
    Publication date: January 8, 2009
    Inventors: Johannes Leendert Den Boestert, Etienne Duhoux, Duurt Renkema, Paulus Theodorus Maria Van Brugge, Arian Nijmeijer
  • Publication number: 20080275286
    Abstract: The present invention provides a process for the preparation of a catalyst having a high surface area and pore volume. The process includes freeze drying an intermediary of the catalyst. The present invention further includes a catalyst prepared by a process that includes the freeze drying step. The present invention also includes a catalyst having a high acidity, as indicated by having an ammonium desorption peak at greater than about 500° C. The prevent invention further includes a method of manufacturing isomerized organic compounds using the catalyst.
    Type: Application
    Filed: July 8, 2008
    Publication date: November 6, 2008
    Applicant: Fina Technology, Inc.
    Inventors: Xin Xiao, James R. Butler
  • Patent number: 7439410
    Abstract: An integrated isomerization-alkylation process is disclosed that uses a common distillation zone. The process can comprise halogen removal. The process is suitable for the production of motor fuels from isoparaffins and olefins using solid alkylation and isomerization catalysts.
    Type: Grant
    Filed: March 30, 2007
    Date of Patent: October 21, 2008
    Assignee: UOP LLC
    Inventors: Lynn H. Rice, Dale J. Shields
  • Patent number: 7439409
    Abstract: Low-value mixed butanes are processed to obtain a high yield of high-purity para-xylene. Processing steps may comprise fractionation to recover isobutane, dehydrogenation of the isobutane to isobutene, dimerization of the isobutene to obtain C8 iso-olefins and isoparaffins, aromatization of the dimerized C8 product, and recovery of high-purity para-xylene from the dimerized product by low-intensity crystallization. The availability of isobutane may be increased by isomerization of normal butane. Each of the processing steps may be tailored to the overall objective of high para-xylene yield from a relatively inexpensive feedstock.
    Type: Grant
    Filed: December 30, 2004
    Date of Patent: October 21, 2008
    Assignee: UOP LLC
    Inventors: Deng-Yang Jan, Stanley J. Frey
  • Patent number: 7435865
    Abstract: A method for separating a mixture of hydrocarbons into fractions enriched in linear, mono-branched, or multi-branched hydrocarbons is disclosed. In particular, mono-branched alkanes are separated from a mixture of alkanes containing multi-branched, mono-branched and linear alkanes, by selectively adsorbing the mono-branched alkanes on a zeolitic adsorbent. The zeolitic adsorbent MCM-22 is particularly suitable for carrying out the method.
    Type: Grant
    Filed: August 17, 2004
    Date of Patent: October 14, 2008
    Assignee: Vrije Universiteit Brussel
    Inventors: Joeri Denayer, Refik Ocakoglu, Gino Baron
  • Publication number: 20080194901
    Abstract: Process to prepare an iso-paraffinic product having a carbon range of Cx to Cy and a iso-paraffinic product having a carbon range of Cn to Cm from a Fischer-Tropsch derived feed by performing the following steps, (a) obtaining from the Fischer-Tropsch derived feed at least two different compositions (i) and (ii), which composition (i) has a greater fraction of compounds in the carbon range of C2n to C2m than composition (ii) and composition (ii) has a greater content of C2x to C2y than composition (i); (b) performing separately a hydroconversion/hydroisomerisation step on feed compositions (i) and (ii) and isolating from the thus obtained effluents the iso-paraffinic product having a carbon range of Cx to Cy and the iso-paraffinic product having a carbon range of Cn to Cm.
    Type: Application
    Filed: December 21, 2005
    Publication date: August 14, 2008
    Inventors: Michiel Cramwinckel, Jan Lodewijk Maria Dierickx, Arend Hoek
  • Publication number: 20080194400
    Abstract: The invention relates to a multi-layer catalyst made from niobium for the catalytic conversion of hydrocarbons, comprising a) a support component made from a doped or undoped oxide or hydroxide of an element of the V sub-group of the periodic table, or mixtures thereof, b) a layer of a promoter compound, selected from oxygen, sulphur or phosphorus compounds of an element of the VI, VII and VIII sub-group or a phosphoxy compound and mixtures thereof and c) a layer comprising a compound of platinum metal. The invention further relates to a method for production of the catalyst and the use thereof.
    Type: Application
    Filed: July 12, 2006
    Publication date: August 14, 2008
    Inventor: Friedrich Schmidt
  • Patent number: 7405339
    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: Grant
    Filed: March 3, 2006
    Date of Patent: July 29, 2008
    Assignee: ConocoPhillips Company
    Inventor: Bruce B. Randolph
  • Patent number: 7384538
    Abstract: A process for the hydroisomerization of a waxy feed having a major portion boiling above 650° F. to produce a lubricating base oil having a lower pour point, said process comprising (a) passing the waxy feed along with hydrogen gas through a hydroisomerization zone maintained at a hydrogen partial pressure of between about 100 psia and about 400 psia, said hydroisomerization zone comprising a catalyst bed containing at least two active wax hydroisomerization catalysts, said catalysts comprising at least (i) a first catalyst comprising an active hydrogenation component and a 1-D, 10-ring molecular sieve having a maximum crystallographic free diameter of the channels equal to 6.2 ? units or greater and (ii) a second catalyst comprising an active hydrogenation component and a 1-D, 10-ring molecular sieve having a maximum crystallographic free diameter of the channels equal to 5.
    Type: Grant
    Filed: November 2, 2004
    Date of Patent: June 10, 2008
    Assignee: Chevron U.S.A. Inc.
    Inventor: Stephen J. Miller
  • Patent number: 7357836
    Abstract: In certain aspects, the invention features methods for forming crystalline membranes (e.g., a membrane of a framework material, such as a zeolite) by inducing secondary growth in a layer of oriented seed crystals. The rate of growth of the seed crystals in the plane of the substrate is controlled to be comparable to the rate of growth out of the plane. As a result, a crystalline membrane can form a substantially continuous layer including grains of uniform crystallographic orientation that extend through the depth of the layer.
    Type: Grant
    Filed: March 5, 2004
    Date of Patent: April 15, 2008
    Assignee: University of Massachusetts
    Inventors: Michael Tsapatsis, Zhiping Lai
  • Patent number: 7326819
    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: Grant
    Filed: January 21, 2005
    Date of Patent: February 5, 2008
    Assignee: UOP LLC
    Inventors: Ralph D. Gillespie, Michelle J. Cohn
  • Patent number: 7304199
    Abstract: A catalyst composition includes an oxygen compound of an element selected from Group IVB or Group IVA of the Periodic Table of the Elements; an oxygen compound of an element selected from Group VIB or Group VIA of the Periodic Table of the Elements; and at least about 1% by weight based upon total catalyst weight of fumed silica particles. The catalyst composition is advantageously employed in hydrocarbon conversion processes such as isomerization.
    Type: Grant
    Filed: April 14, 2004
    Date of Patent: December 4, 2007
    Assignee: ABB Lummus Global Inc.
    Inventors: Jinsuo Xu, Chuen Y. Yeh, Philip J. Angevine
  • Patent number: 7267758
    Abstract: For producing very high quality base stock and for simultaneously producing high quality middle distillates, successive hydroisomerisation and catalytic dewaxmg steps are employed wherein the 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 20%-100%. 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 selected from ZBM-30, EU-2 and EU-11.
    Type: Grant
    Filed: December 13, 2001
    Date of Patent: September 11, 2007
    Assignee: Institut Francais du Petrole
    Inventors: Eric Benazzi, Nathalie Marchal-George, Tivadar Cseri, Pierre Marion, Christophe Gueret
  • Patent number: 7256152
    Abstract: A composition defined: either as comprising at least one Broensted acid, designated HB, dissolved in a liquid medium with an ionic nature of general formula Q+A?, in which Q+ represents an organic cation and A? represents an anion that is different from B, or as resulting from dissolving at least one Broensted acid, designated HB, in a non-aqueous liquid medium with an ionic nature of general formula Q+A?, in which Q+ represents an organic cation and A? represents an anion that is identical to the anion B, can be used as a catalyst and solvent in acid catalysis processes, in particular in the alkylation of aromatic hydrocarbons, the oligomerization of olefins, the dimerization of isobutene, the alkylation of olefins by isoparaffins, the isomerization of n-paraffins into isoparaffins, the isomerization of n-olefins into iso-olefins, the isomerization of the double bond of an olefin and the purification of an olefin mixture that contains branched alpha olefins as impurities.
    Type: Grant
    Filed: September 3, 2002
    Date of Patent: August 14, 2007
    Assignee: Institut Francais du Petrole
    Inventors: Helene Olivier-Bourbigou, Dominique Commereuc, Olivia Martin, Lionel Magna, Emmanuel Pellier
  • Patent number: 7252754
    Abstract: This invention relates to a process for production of middle distillates having biodegradability properties. More particularly, this invention relates to a process for production of middle distillates produced from a mainly paraffinic synthetic crude which is produced by the reaction of CO and H2, typically by the Fischer-Tropsch (FT) process. The middle distillate produced according to the process of the invention may be a diesel fuel, having an aromatics content of less than 9%, as determined by the ASTM D 5186 or IP 391 test method. The paraffinic chains of the middle distillate may be predominantly isoparaffins.
    Type: Grant
    Filed: March 24, 2004
    Date of Patent: August 7, 2007
    Assignee: Sasol Technology (Pty) Ltd.
    Inventors: Robert DeHaan, Luis Pablo Dancuart, Mark Jan Prins, Ewald Watermeyer DeWet
  • Patent number: 7252753
    Abstract: Dielectric fluids comprising oil fractions derived from highly paraffinic wax are provided. Further provided are processes for making these dielectric fluids comprising oil fractions derived from highly paraffinic wax. The dielectric fluids are useful as insulating and cooling mediums in new and existing power and distribution electrical apparatus, such as transformers, regulators, circuit breakers, switchgear, underground electrical cables, and attendant equipment.
    Type: Grant
    Filed: December 1, 2004
    Date of Patent: August 7, 2007
    Assignee: Chevron U.S.A. Inc.
    Inventors: John M. Rosenbaum, Nadine L. Yenni, Joseph M. Pudlak
  • Patent number: 7250107
    Abstract: For producing basic oils and in particular very high quality oils, i.e. oils possessing a high viscosity index (VI), a low aromatics content, good UV stability and a low pour point, from oil cuts having an initial boiling point higher than 340° C., possibly with simultaneous production of middle distillates (in particular gasoils and kerosene) of very high quality, i.e. having a low aromatics content and a low pour point, the invention provides a flexible procedure for producing oils and middle distillates from a charge containing heteroatoms, i.e. containing more than 200 ppm by weight of nitrogen, and more than 500 ppm by weight of sulphur. The procedure comprises at least one hydrorefining stage, at least one stage of catalytic dewaxing on zeolite, and at least one hydrofinishing stage.
    Type: Grant
    Filed: July 23, 2001
    Date of Patent: July 31, 2007
    Assignee: Institut Francais du Petrole
    Inventors: Eric Benazzi, Christophe Gueret, Pierre Marion, Alain Billon
  • Patent number: 7223898
    Abstract: A process for the isomerization of a feedstream comprising C5–C6 hydrocarbons where the process involves charging hydrogen and a feedstream comprising at least normal C5–C6 hydrocarbons into an isomerization zone and contacting said hydrogen and feedstream with an isomerization catalyst at isomerization conditions to increase the branching of the feedstream hydrocarbons and produce an isomerization effluent stream comprising at least normal pentane, normal hexane, methylbutane, dimethylbutane, and methylpentane has been discovered. Without passing through a stabilizer, the isomerization effluent stream is passed to a deisohexanizer zone to generate at least a stream enriched in methylbutane and dimethylbutanes. The stream enriched in methylbutane and dimethylbutanes is passed to an isomerate striper column to remove butane and lighter hydrocarbons and gasses. The remainder containing the methylbutane and dimethylbutanes is collected for use in, for example, gasoline blending.
    Type: Grant
    Filed: March 11, 2005
    Date of Patent: May 29, 2007
    Assignee: UOP LLC
    Inventor: Lynn H. Rice
  • Patent number: 7217852
    Abstract: This invention relates to middle distillates having good cold flow properties, such as the Cold Filter Plugging Point (CFPP) measured in accordance with the IP method (309), and a high Cetane number, as well as to a process for production of such distillates. More particularly, this invention relates to middle distillates produced from a mainly paraffinic synthetic crude which is produced by the reaction of CO and H2, typically by the Fischer-Tropsch (FT) process. The middle distillates of the invention are predominantly isoparaffinic, the isoparaffins being methyl, ethyl and/or propyl branched. The invention also provides a diesel fuel composition including the middle distillates in accordance with the invention. A process for preparing the middle distillates is also included in the invention.
    Type: Grant
    Filed: September 17, 1999
    Date of Patent: May 15, 2007
    Assignee: Sasol Technology (PTY) Ltd.
    Inventors: Robert DeHaan, Luis Pablo Dancuart, Mark Jan Prins, Ewald Watermeyer DeWet
  • Patent number: 7151199
    Abstract: Hydrocarbon or oxygenate conversion process in which a feedstock is contacted with a non zeolitic molecular sieve which has been treated to remove most, if not all, of the halogen contained in the catalyst. The halogen may be removed by one of several methods. One method includes heating the catalyst in a low moisture environment, followed by contacting the heated catalyst with air and/or steam. Another method includes steam-treating the catalyst at a temperature from 400° C. to 1000° C. The hydrocarbon or oxygenate conversion processes include the conversion of oxygenates to olefins, the conversion of oxygenates and ammonia to alkylamines, the conversion of oxygenates and aromatic compounds to alkylated aromatic compounds, cracking and dewaxing.
    Type: Grant
    Filed: June 10, 2002
    Date of Patent: December 19, 2006
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Luc Roger Marc Martens, Stephen N. Vaughn, Albert Edward Schweizer, John K. Pierce, Shun Chong Fung
  • Patent number: 7132042
    Abstract: Dewaxed fuel and lubricant base stocks are made by (a) producing a synthesis gas from natural gas, (b) reacting the H2 and CO in the gas in the presence of a cobalt Fischer-Tropsch catalyst, at reaction conditions effective to synthesize a waxy hydrocarbon feed boiling in the fuel and lubricant oil ranges, which is hydrodewaxed in a first stage to produce a dewaxed fuel and a partially dewaxed lubricant fraction. The partially dewaxed lubricant fraction is separated into heavy and lower boiling fractions each of which is separately hydrodewaxed, to produce lubricant base stocks. A hydrodewaxing catalyst comprising a hydrogenation component, binder and solid acid component used to hydrodewax at least one, and preferably at least two of the waxy feed and partially dewaxed heavy and lower boiling lubricant fractions.
    Type: Grant
    Filed: October 8, 2002
    Date of Patent: November 7, 2006
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: William Berlin Genetti, Adeana Richelle Bishop, Nancy Marie Page, Gregg Johnston Howsmon, Loren Leon Ansell, Jack Wayne Johnson
  • Patent number: 7053261
    Abstract: A process for the conversion of linear and/or branched paraffin hydrocarbons based on the use of an ionic liquid catalyst in combination with a metal salt additive, 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: Grant
    Filed: March 14, 2003
    Date of Patent: May 30, 2006
    Assignee: Haldor Topsoe A/S
    Inventors: Konrad Herbst, Jindrich Houzvicka, Birgitte Tofte Jespersen, John Zavilla
  • Patent number: 7037422
    Abstract: A process for producing a high RON naphtha which comprises contacting a hydrocarbon feed stream comprising a mixture of the isomers of C5 and C6 paraffins with a CFI zeolite, such as CIT-5, in an adsorption zone, whereby the branched isomers of the C5 and C6 paraffins are preferentially adsorbed by the CFI zeolite as compared to the straight chain isomers, and recovering a naphtha product from the adsorption zone having a higher RON than the hydrocarbon feed stream, also including a hydroisomerization process and a hydrocracking process.
    Type: Grant
    Filed: February 25, 2003
    Date of Patent: May 2, 2006
    Assignee: Chevron U.S.A. Inc
    Inventors: Theo Maesen, Tom Harris
  • Patent number: 7029572
    Abstract: A process for producing a high RON naphtha which comprises contacting a hydrocarbon feed stream comprising a mixture of the isomers of C5 and C6 paraffins with ATS zeolite, such as SSZ-55, in an adsorption zone, whereby the branched isomers of the C5 and C6 paraffins are preferentially adsorbed by the ATS zeolite as compared to the straight chain isomers, and recovering a naphtha product from the adsorption zone having a higher RON than the hydrocarbon feed stream, also including a hydroisomerization process and a hydrocracking process.
    Type: Grant
    Filed: February 25, 2003
    Date of Patent: April 18, 2006
    Assignee: Chevron U.S.A. Inc
    Inventors: Theo Maesen, Tom Harris
  • Patent number: 7019183
    Abstract: It is made possible to efficiently produce adamantane and analogues thereof, namely a hydrocarbon having an adamantane structure by a process which comprises isomerizing a tricyclic saturated hydrocarbon having ten or more carbon atoms in the presence of a solid-acid catalyst containing one or two or more metals selected from among the metals belonging to group VIII in the Periodic Table (group 8 to 12 in the new Periodic Table), wherein one or two or more monocyclic saturated hydrocarbons are added to the tricyclic saturated hydrocarbon having ten or more carbon atoms.
    Type: Grant
    Filed: November 26, 2001
    Date of Patent: March 28, 2006
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Akio Kojima, Kouichi Kodoi
  • Patent number: 7015175
    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 and a refractory-oxide binder having at least one platinum-group metal component dispersed thereon.
    Type: Grant
    Filed: June 21, 2004
    Date of Patent: March 21, 2006
    Assignee: UOP LLC
    Inventors: James G. Vassilakis, Richard R. Rosin, Steven A. Bradley, Ralph D. Gillespie, Michelle J. Cohn, Feng Xu
  • Patent number: 6927314
    Abstract: A process to increase the octane number of a naphtha boiling range feed stock has been developed. Using a dividing wall column, the feed stock is separated into a light fraction comprising compounds containing five carbon atoms or less, an intermediate fraction containing largely compounds having six carbon atoms, and a heavy fraction which comprises compounds containing more than six carbon atoms. The light and heavy fractions are passes to a gasoline blending pool. The intermediate fraction is isomerized to increase the octane number of the intermediate fraction and form an isomerate. The isomerate is passed to the gasoline bending pool.
    Type: Grant
    Filed: July 17, 2002
    Date of Patent: August 9, 2005
    Assignee: UOP LLC
    Inventors: Michael A. Schultz, Joseph A. Weiszmann
  • Patent number: 6881873
    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: Grant
    Filed: November 20, 2003
    Date of Patent: April 19, 2005
    Assignee: UOP LLC
    Inventors: Ralph D. Gillespie, Michelle J. Cohn
  • Patent number: 6860909
    Abstract: A blend useful as a diesel fuel, as well as a method for its production, comprising a high quality Fischer-Tropsch derived distillate boiling in the range of a diesel fuel blended with a cracked stock boiling in the range of a diesel fuel wherein the final blend contains 10-35 wt. % aromatics and 1-20 wt. % polyaromatics and produces low regulated emissions levels.
    Type: Grant
    Filed: June 13, 2003
    Date of Patent: March 1, 2005
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Paul Joseph Berlowitz, Robert Jay Wittenbrink, Bruce Randall Cook
  • Patent number: 6858769
    Abstract: A catalyst for the selective oxidation of hydrogen has been developed. It comprises an inert core such as cordierite and an outer layer comprising a lithium aluminate support. The support has dispersed thereon a platinum group metal and a promoter metal, e.g. platinum and tin respectively. This catalyst is particularly effective in the selective oxidation of hydrogen in a dehydrogenation process.
    Type: Grant
    Filed: October 18, 2002
    Date of Patent: February 22, 2005
    Assignee: UOP LLC
    Inventors: Guy B. Woodle, Andrew S. Zarchy, Jeffery C. Bricker, Andrzej Z. Ringwelski
  • Patent number: 6822131
    Abstract: Clean distillate useful as a diesel fuel or diesel blending stock is produced from Fischer-Tropsch wax by separating wax into heavier and lighter fractions; further separating the lighter fraction and hydroisomerizing the heavier fraction and that portion of the light fraction below about 500° F. The isomerized product is blended with the untreated portion of the lighter fraction.
    Type: Grant
    Filed: November 17, 1997
    Date of Patent: November 23, 2004
    Assignee: ExxonMobil Reasearch and Engineering Company
    Inventors: Paul J. Berlowitz, Robert J. Wittenbrink, Bruce R. Cook