With Preliminary Treatment Of Paraffin Feed Patents (Class 585/737)
  • Patent number: 10370596
    Abstract: A method for producing an alternative gasoline fuel which contains 60% v/v or more of a combination of (a) a biologically-derived alcohol and (b) a mixture of C4 to C12 hydrocarbon fuel components, all of which hydrocarbon fuel components have been derived, whether directly or indirectly, from the catalytic conversion of a non-petroleum or biologically-derived oxygenate component, wherein the concentration of the alcohol (a) in the formulation is from 0.1 to 30% v/v.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: August 6, 2019
    Assignee: Virent, Inc.
    Inventors: Paul Blommel, Richard Price
  • Patent number: 10131849
    Abstract: The present invention describes a process for the isomerization of a light naphtha with a view to forming high octane number gasolines, said process using a deisopentanizer and a deisohexanizer which are thermally integrated in a manner such as to reduce the consumption of the high temperature utilities employed in the process.
    Type: Grant
    Filed: April 20, 2015
    Date of Patent: November 20, 2018
    Assignee: AXENS
    Inventors: Isabelle Prevost, Laurent Watripont, Pierre-Yves Martin, Jerome Pigourier
  • Patent number: 10113121
    Abstract: The present invention describes a process for the production of high octane number gasoline by isomerization of a light naphtha cut, comprising two separation steps located downstream of the reaction step which can be used to improve the energy efficiency of said process.
    Type: Grant
    Filed: April 20, 2015
    Date of Patent: October 30, 2018
    Assignee: AXENS
    Inventors: Jerome Pigourier, Isabelle Prevost, Laurent Watripont, Pierre-Yves Martin
  • Patent number: 9400064
    Abstract: Disclosed is a method for storing and delivering ammonia, wherein a first ammonia adsorbing/absorbing material having a higher vapor pressure at a given temperature than a second ammonia adsorbing/absorbing material is used as an ammonia source for said second ammonia adsorbing/absorbing material when said second adsorbing/absorbing material is depleted of ammonia by consumption, and a device for performing the method.
    Type: Grant
    Filed: June 3, 2013
    Date of Patent: July 26, 2016
    Assignee: AMMINEX A/S
    Inventor: Tue Johannessen
  • Patent number: 9040765
    Abstract: Embodiments of methods and apparatuses for isomerization of paraffins are provided. In one example, a method comprises the steps of separating an isomerization effluent into a product stream that comprises branched paraffins and a stabilizer vapor stream that comprises HCl, H2, and C6-hydrocarbons. C6-hydrocarbons are removed from the stabilizer overhead vapor stream to form a HCl and H2-rich stream. An isomerization catalyst is activated using at least a portion of the HCl and H2-rich stream to form a chloride-promoted isomerization catalyst. A paraffin feed stream is contacted with the chloride-promoted isomerization catalyst in the presence of hydrogen for isomerization of the paraffins.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: May 26, 2015
    Assignee: UOP LLC
    Inventor: Lynn H. Rice
  • Publication number: 20150005541
    Abstract: Processes for the disproportionation and isomerization of a C7 hydrocarbon feed using a liquid catalyst comprising an ionic liquid and a carbocation promoter are described. The ionic liquid is unsupported, and the reactions occur at temperatures below about 200° C.
    Type: Application
    Filed: June 28, 2013
    Publication date: January 1, 2015
    Inventors: Stuart Smith, Alakananda Bhattacharyya
  • Publication number: 20150005542
    Abstract: Processes for the disproportionation and isomerization of a C5 hydrocarbon feed using a liquid catalyst comprising an ionic liquid and a halocarbon carbocation promoter are described. The ionic liquid is unsupported, and the reactions occur at temperatures below about 200° C.
    Type: Application
    Filed: June 28, 2013
    Publication date: January 1, 2015
    Inventors: Stuart Smith, Alakananda Bhattacharyya, Dana K. Sullivan
  • Publication number: 20150005540
    Abstract: Processes for the disproportionation and isomerization of a hydrocarbon feed using a liquid catalyst comprising an ionic liquid and a carbocation promoter are described. The ionic liquid is unsupported, and the reactions occur at temperatures below about 200° C.
    Type: Application
    Filed: June 28, 2013
    Publication date: January 1, 2015
    Inventors: Stuart Smith, Alakananda Bhattacharyya
  • Patent number: 8882990
    Abstract: Embodiments of methods for making renewable diesel by deoxygenating (decarboxylating/decarbonylating/dehydrating) fatty acids to produce hydrocarbons are disclosed. Fatty acids are exposed to a catalyst selected from a) Pt and MO3 on ZrO2 (M is W, Mo, or a combination thereof), or b) Pt/Ge or Pt/Sn on carbon, and the catalyst decarboxylates at least 10% of the fatty acids. In particular embodiments, the catalyst consists essentially of 0.7 wt % Pt and 12 wt % WO3, relative to a mass of catalyst, or the catalyst consists essentially of a) 5 wt % Pt and b) 0.5 wt % Ge or 0.5 wt % Sn, relative to a mass of catalyst. Deoxygenation is performed without added hydrogen and at less than 100 psi. Disclosed embodiments of the catalysts deoxygenate at least 10% of fatty acids in a fatty acid feed, and remain capable of deoxygenating fatty acids for at least 200 minutes to more than 350 hours.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: November 11, 2014
    Assignee: Battelle Memorial Institute
    Inventors: Richard T. Hallen, Karl O. Albrecht, Heather M. Brown, James F. White
  • Patent number: 8513480
    Abstract: A reaction-rectification process is performed in an integrated reaction-rectification system which combines catalytic isomerization and hydroisomerization reactors and distillations zones in an integral column.
    Type: Grant
    Filed: January 19, 2012
    Date of Patent: August 20, 2013
    Assignee: “RRT”, Ltd.
    Inventors: Oleg Valerievich Giyazov, Oleg Igorevich Parputs
  • Patent number: 8440875
    Abstract: A method of making a diesel fuel from a renewable feedstock is described. Ammonia or an amine compound is used to neutralize the organic acids in the renewable feedstock. The ammonia or amine compound is removed from the product mixture before the isomerization zone so that it does not affect the isomerization catalyst.
    Type: Grant
    Filed: May 18, 2012
    Date of Patent: May 14, 2013
    Assignee: UOP LLC
    Inventor: Donald A. Eizenga
  • Patent number: 8388829
    Abstract: Embodiments of methods for making renewable diesel by deoxygenating (decarboxylating/decarbonylating/dehydrating) fatty acids to produce hydrocarbons are disclosed. Fatty acids are exposed to a catalyst selected from a) Pt and MO3 on ZrO2 (M is W, Mo, or a combination thereof), or b) Pt/Ge or Pt/Sn on carbon, and the catalyst decarboxylates at least 10% of the fatty acids. In particular embodiments, the catalyst consists essentially of 0.7 wt % Pt and 12 wt % WO3, relative to a mass of catalyst, or the catalyst consists essentially of a) 5 wt % Pt and b) 0.5 wt % Ge or 0.5 wt % Sn, relative to a mass of catalyst. Deoxygenation is performed without added hydrogen and at less than 100 psi. Disclosed embodiments of the catalysts deoxygenate at least 10% of fatty acids in a fatty acid feed, and remain capable of deoxygenating fatty acids for at least 200 minutes to more than 350 hours.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: March 5, 2013
    Assignee: Battelle Memorial Institute
    Inventors: Richard T. Hallen, Karl O. Albrecht, Heather M. Brown, James F. White
  • Patent number: 8366907
    Abstract: Embodiments of methods for making renewable diesel by deoxygenating (decarboxylating/decarbonylating/dehydrating) fatty acids to produce hydrocarbons are disclosed. Fatty acids are exposed to a catalyst selected from a) Pt and MO3 on ZrO2 (M is W, Mo, or a combination thereof), or b) Pt/Ge or Pt/Sn on carbon, and the catalyst decarboxylates at least 10% of the fatty acids. In particular embodiments, the catalyst consists essentially of 0.7 wt % Pt and 12 wt % WO3, relative to a mass of catalyst, or the catalyst consists essentially of a) 5 wt % Pt and b) 0.5 wt % Ge or 0.5 wt % Sn, relative to a mass of catalyst. Deoxygenation is performed without added hydrogen and at less than 100 psi. Disclosed embodiments of the catalysts deoxygenate at least 10% of fatty acids in a fatty acid feed, and remain capable of deoxygenating fatty acids for at least 200 minutes to more than 350 hours.
    Type: Grant
    Filed: August 2, 2010
    Date of Patent: February 5, 2013
    Assignee: Battelle Memorial Institute
    Inventors: Richard T. Hallen, Karl O. Albrecht, Heather M. Brown, James F. White
  • Patent number: 8314281
    Abstract: The service life and deactivation rate of a paraffin isomerization catalyst is improved through use of a new sulfur guard bed containing a chloride additive. This sulfur guard bed, which contains supported CuO material having an increased resistance to reduction, shows such improvement. Thus, the danger of run-away reduction followed by a massive release of water and deactivation of an isomerization catalyst is practically eliminated. The fact that the guard bed material preserves the active metal phase-copper in an active (oxide) form is an important advantage leading to very low sulfur content in the product stream. The sulfur capacity per unit weight of sorbent is also significantly increased, making this sorbent a superior cost effective sulfur guard product.
    Type: Grant
    Filed: June 7, 2010
    Date of Patent: November 20, 2012
  • Patent number: 8142644
    Abstract: A process for hydrocracking and hydro-isomerization of a paraffinic feedstock obtained by Fischer-Tropsch hydrocarbon synthesis comprising at least 50 wt % of components boiling above 370° C. to obtain a hydro-isomerized feedstock, the process comprising contacting the feedstock, in the presence of hydrogen, at elevated temperature and pressure with a catalyst comprising a hydrogenating compound supported on a carrier comprising amorphous silica-alumina, the carrier having a pore volume of at least 0.8 ml/g, wherein at most 40% of the pore volume comes from pores having a pore diameter above 35 nm and wherein at most 20% of the pore volume comes from pores having a pore diameter below 50 ? and above 37 ?, the carrier having a median pore diameter of at least 85 ?, wherein the product of (surface area per pore volume) and (median pore diameter as measured by mercury intrusion porosimetry) of the carrier is at least 34,000 ?·m2/ml.
    Type: Grant
    Filed: September 10, 2008
    Date of Patent: March 27, 2012
    Assignee: Shell Oil Company
    Inventors: Focco Kornelis Bijlsma, Jan Lodewijk Maria Dierickx, Arend Hoek
  • 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
  • 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
  • Publication number: 20100145128
    Abstract: Process for isomerising a hydrocarbon feed containing at least C7 hydrocarbons, comprising steps of (a) in a separation column separating the feed into a heavy fraction comprising hydrocarbons having higher boiling point than n-heptane, an intermediate fraction being rich in n-heptane and/or mono-branched iso-heptanes and a light fraction being rich in multi-branched iso-heptanes; (b) withdrawing continuously from the separation column a portion of the intermediate fraction being rich in n-heptane and/or mono-branched iso-heptanes; (c) introducing the withdrawn portion into an isomerisation reactor and isomerising at isomerisation conditions the portion in presence of an isomerisation catalyst and a gas stream being rich in hydrogen; (d) withdrawing from the isomerisation reactor an isomerised effluent stream being enriched in multi-branched iso-heptanes together with cracked hydrocarbons and hydrogen; (e) purging the cracked hydrocarbons and hydrogen from the isomerised effluent to obtain a stabilised reacto
    Type: Application
    Filed: November 13, 2006
    Publication date: June 10, 2010
    Inventor: Sven Ivar Hommeltoft
  • Patent number: 7727379
    Abstract: Process to prepare simultaneously two or more base oil grades and middle distillates from a mineral crude derived feed, in particular a de-asphalted oil or a vacuum distillate feed or their mixtures, by performing the following steps: (a) hydrocracking the mineral crude derived feed, thereby obtaining an effluent; (b) distillation of the effluent as obtained in step (a) into one or more middle distillates and a full range residue boiling substantially above 340° C., (c) catalytically dewaxing the full range residue by contacting the residue with a dewaxing catalyst comprising a zeolite of the MTW type and a Group VIII metal, thereby obtaining a dewaxed oil; (d) isolating by means of distillation two or more base oil grades from the dewaxed oil obtained in step (c); and (e) isolating a dewaxed gas oil from the dewaxed-oil obtained in step (c); wherein the dewaxed oil as obtained in step (c) comprises between 10 and 40 wt % of a dewaxed heavy gas oil boiling for more than 70 wt % between 370 and 400° C.
    Type: Grant
    Filed: March 1, 2005
    Date of Patent: June 1, 2010
    Assignee: Shell Oil Company
    Inventors: Nicholas James Adams, Harmannus Julius Hegge, Laurent Georges Huve, Kevin John Anthony Polder, Wiecher Derk Evert Steenge
  • Patent number: 7658836
    Abstract: The process of producing middle distillates from effluents obtained by a Fischer-Tropsch synthesis, comprises a step for hydro-treatment and purification and/or decontamination by passage over a multi-functional guard bed prior to a step of hydrocracking/hydroisomerization. The guard bed reduces the amount of unsaturated compounds, oxygen-containing compounds, particulate mineral solids, and organometallic compounds.
    Type: Grant
    Filed: July 17, 2006
    Date of Patent: February 9, 2010
    Assignees: Institut Francais du Petrole, ENI S.p.A.
    Inventors: Patrick Euzen, Vincenzo Calemma
  • Patent number: 7612246
    Abstract: Process for the production of a RON isomerate that is at least equal to 80 and that contains less than 1% by weight of aromatic compounds and for co-production of an aromatic fraction that for the most part contains toluene, starting from a fraction with 7 carbon atoms containing paraffins, aromatic compounds and naphthenes.
    Type: Grant
    Filed: September 22, 2005
    Date of Patent: November 3, 2009
    Assignee: Institut Francais du Petrole
    Inventors: Paul Broutin, Dominique Casanave, Jean-Francois Joly, Elsa Jolimaitre
  • 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: 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
  • 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: 7332638
    Abstract: A process for the production of triptane, comprises: providing a hydrocarbon feedstock comprising at least 1 vol % of at least one cyclic hydrocarbon comprising a C5 and/or C6 ring; pre-treating the hydrocarbon feedstock by contacting the hydrocarbon feedstock with a catalyst in the presence of hydrogen, under conditions suitable for selectively opening the ring of the cyclic hydrocarbon; and isomerising the pre-treated feedstock by contacting the pre-treated feedstock with an isomerisation catalyst to produce a triptane-containing product stream.
    Type: Grant
    Filed: August 15, 2002
    Date of Patent: February 19, 2008
    Assignee: BP Oil International Limited
    Inventors: Willem Marco Boesveld, Paul Greenough
  • 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: 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: 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: 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: 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: 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: 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
  • 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: 6699385
    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: Grant
    Filed: October 17, 2001
    Date of Patent: March 2, 2004
    Assignee: Chevron U.S.A. Inc.
    Inventor: Stephen J. Miller
  • Patent number: 6673977
    Abstract: A procedure for the alkylation of isobutane by olefinic hydrocarbons, in which a first hydrocarbon charge (3) rich in isobutane is put in contact with a second hydrocarbon charge rich in light olefins (2), under conditions that will provoke the alkylation of the isobutane by the light olefins, the effluents that emanate from the reaction area in a fractionation column (6) are treated in order to extract therefrom at least a first cut rich in alkylate (7), a second cut rich in normal butane (8) and a third cut rich in isobutane (9), said third cut (9) is then recycled at the entry of the alkylation reaction area. The second cut (8) rich in normal butane is purified (12) so as to lower its content in compounds with 5 or more carbon atoms to a value that is less than or equal to 5% by weight, the cut thus purified (14) is treated in an isomerization reactor (16) of normal butane to isobutane, this cut is then recycled (21) at the entry of the alkylation effluents fractionation column (6).
    Type: Grant
    Filed: December 20, 2000
    Date of Patent: January 6, 2004
    Assignee: Total Raffinage Distribution S.A.
    Inventors: Jean-Louis Mauleon, Pedro Nascimento
  • 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
  • Patent number: 6586650
    Abstract: A process for opening naphthenic rings of naphthenic ring-containing compounds, along with catalysts which can be used in that process. The naphthene ring opening catalyst is a catalyst comprising at least one Group VIII metal selected from Ir, Pt, Rh, and Ru, wherein these metals are supported on an alkali metal or alkaline-earth metal modified support in an amount effective for opening a naphthene ring-containing compound at a tertiary carbon site.
    Type: Grant
    Filed: July 2, 2001
    Date of Patent: July 1, 2003
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: William C. Baird, Jr., Darryl P. Klein, Michele S. Touvelle, Jingguang G. Chen, Gary B. McVicker
  • 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: 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: 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: 6353144
    Abstract: For producing three effluents which are respectively rich in straight chain paraffins, in mono-branched paraffins, and in di-branched and tri-branched paraffins possibly with naphthenic and/or aromatic compounds, from C5-C8 cuts or intermediate cuts (C5-C7, C6-C8, C7-C8, C6-C7, C7 or C8), comprising paraffinic and possibly naphthenic and/or aromatic hydrocarbons, and in some cases olefinic hydrocarbons, a chromatographic separation process uses a separation zone operating by adsorption. The process of the invention is of particular application when coupled with a hydro-isomerization process, which selectively recycles straight chain and mono-branched paraffins, necessary for paraffins containing at least 7 carbon atoms.
    Type: Grant
    Filed: February 4, 1999
    Date of Patent: March 5, 2002
    Assignee: Institut Francais du Petrole
    Inventors: Karine Ragil, Michel Bailly, Sophie Jullian, Olivier Clause
  • Patent number: 6156950
    Abstract: For producing three effluents which are respectively rich in straight chain paraffins, in mono-branched paraffins, and in di-branched and tri-branched paraffins possibly with naphthenic and/or aromatic compounds, from C5-C8 cuts or intermediate cuts (C5-C7, C6-C8, C7-C8, C6-C7, C7 or C8), comprising paraffic and possibly naphthenic, aromatic and olefinic hydrocarbons, the separation process of the invention uses at least two separation units operating either by adsorption or by permeation. It is of particular application when coupled with a hydro-isomerization process, which selectively recycles straight chain and mono-branched paraffins, necessary with paraffins containing more than 7 carbon atoms.
    Type: Grant
    Filed: November 25, 1998
    Date of Patent: December 5, 2000
    Assignee: Institut Francais du Petrole
    Inventors: Karine Ragil, Isabelle Prevost, Olivier Clause, Joseph Larue, Benoit Millot
  • Patent number: 6124516
    Abstract: A process for isomerizing hydrocarbons is disclosed. The process includes contacting, under reaction conditions, a hydrocarbon-containing fluid containing a saturated hydrocarbon, preferably a normal paraffin containing in the range of from about 4 carbon atoms to about 10 carbon atoms per molecule, with a composition in a single-stage reaction zone. The process includes isomerizing such saturated hydrocarbon to thereby provide a product containing an isomerized hydrocarbon. The composition used in the process contains a zeolite and a metal carbide. The composition can be produced by combining a metal, preferably such metal is in a metal compound, with the zeolite to thereby provide a metal-promoted zeolite. The metal-promoted zeolite is then calcined or steamed followed by contacting the resulting zeolite with a hydrocarbon, preferably in the presence of hydrogen, to thereby provide a carburized metal-promoted zeolite.
    Type: Grant
    Filed: January 21, 1999
    Date of Patent: September 26, 2000
    Assignee: Phillips Petroleum Company
    Inventors: An-hsiang Wu, Charles A. Drake
  • Patent number: 6103099
    Abstract: A lubricating base stock useful for forming lubricants such as a multigrade automotive oils, automatic transmission oils, greases and the like is prepared by hydroisomerizing a waxy hydrocarbon feed fraction having an initial boiling point in the 650-750.degree. F. range and an end point of at least 1050.degree. F., synthesized by a slurry Fischer-Tropsch hydrocarbon synthesis process. The hydroisomerization forms a hydroisomerate containing the desired base stock which is recovered, without dewaxing the hydroisomerate. The hydroisomerization is conducted at conditions effective to convert at least 67 wt. % of the 650-750.degree. F.+ waxy feed hydrocarbons to lower boiling hydrocarbons. When combined with a standard lubricant additive package, these base stocks have been formed into multigrade automotive crankcase oils, transmission oils and hydraulic oils meeting the specifications for these oils.
    Type: Grant
    Filed: September 4, 1998
    Date of Patent: August 15, 2000
    Assignee: Exxon Research and Engineering Company
    Inventors: Robert J. Wittenbrink, Daniel F. Ryan, Douglas R. Boate
  • Patent number: 6008427
    Abstract: A method providing enhanced heat integration in isomerization processes having an isomerization reactor operating at a temperature less than about 232.degree. C. (450.degree. F.) and an adsorption zone operating at a temperature greater than about 260.degree. C. (500.degree. F.) has been developed. The method begins with flowing a fresh feed stream containing normal and non-normal hydrocarbons to either the isomerization reactor or the adsorption zone. A variable mass flow desorption effluent containing at least normal hydrocarbons is flowed to the isomerization reactor to form a reactor effluent containing normal hydrocarbons and isomerized non-normal hydrocarbons. The reactor effluent is cooled and separated into an adsorber feed stream and a hydrogen purge gas which are each conducted to an adsorption zone. In the adsorption zone, the normal hydrocarbons are adsorbed and the non-normal hydrocarbons are withdrawn and collected.
    Type: Grant
    Filed: May 4, 1998
    Date of Patent: December 28, 1999
    Assignee: UOP LLC
    Inventor: Lynn H. Rice
  • Patent number: 5951847
    Abstract: A process for catalytically dehazing lubricating base oils is disclosed, which comprises contacting the lubricating base oil in the presence of hydrogen with a catalyst comprising naturally occurring and/or synthetic ferrierite which ferrierite has been modified to reduce the mole percentage of alumina and a low acidity refractory oxide binder material which is essentially free of alumina.
    Type: Grant
    Filed: October 31, 1996
    Date of Patent: September 14, 1999
    Assignee: Shell Oil Company
    Inventors: Pierre Grandvallet, Laurent Georges Huve
  • Patent number: 5834522
    Abstract: The invention concerns a process for the hydroisomerisation treatment for feeds from the Fischer-Tropsch process. The catalyst is essentially constituted by 0.05% to 10% by weight of a precious metal and a silica (5-70%)/alumina support with a specific surface area of 100-500 m.sup.2 /g. The catalyst has an average pore diameter of 1-12 nm, the pore volume of pores with diameters between the average diameter .+-.3 nm being more than 40% of the total pore volume. The dispersion of the precious metal is 20-100% and the distribution coefficient for the precious metal is greater than 0.1. The process is operated at 200.degree.-450.degree. C. at a partial pressure of hydrogen of 2 to 25 MPa with a VVH of 0.1-10 h.sup.-1 and a hydrogen/feed volume ratio of 100-2000.
    Type: Grant
    Filed: July 5, 1996
    Date of Patent: November 10, 1998
    Assignee: Institut Francais du Petrole
    Inventors: Samuel Mignard, Nathalie Marchal, Slavik Kasztelan, Pierre-Henri Bigeard, Alain Billon
  • Patent number: 5831139
    Abstract: A process combination is disclosed to selectively upgrade naphtha in accordance with expected trends leading to more-aliphatic gasolines. Such gasolines contain lower concentrations of aromatics and have lower end points with concomitant reduced harmful automotive emissions. The present process combination converts the higher-boiling portion of the naphtha, yields isobutane and other isoparaffins which are particularly suitable for upgrading or blending, and reduces cyclics in intermediate processing steps.
    Type: Grant
    Filed: March 26, 1997
    Date of Patent: November 3, 1998
    Assignee: UOP LLC
    Inventors: Robert J. Schmidt, Paula L. Bogdan, Leonid B. Galperin, Jennifer S. Holmgren