S-containing Patents (Class 585/730)
  • Patent number: 5326924
    Abstract: Alkylation processes of the type used in the refining of petroleum can be improved by using a promoter composition which contains an alkyl phosphate ester amine salt and pinene.
    Type: Grant
    Filed: August 19, 1987
    Date of Patent: July 5, 1994
    Assignee: Nalco Chamical Company
    Inventor: John C. Kisalus
  • Patent number: 5321197
    Abstract: New catalyst compositions comprise sulfated and calcined mixtures of (1) a support comprising an oxide or hydroxide of a Group IV-A element, (2) an oxide or hydroxide of molybdenum, and (3) an oxide or hydroxide of a Group I-B, II-B, III-A, III-B, IV-B, V-A or VI-A metal other than molybdenum or a metal of the Lanthanide Series of the Periodic Table. A process for alkylation of acyclic saturated compounds with acyclic unsaturated compounds utilizing such catalyst compositions.
    Type: Grant
    Filed: December 17, 1992
    Date of Patent: June 14, 1994
    Assignee: Sun Company, Inc. (R&M)
    Inventors: Howard P. Angstadt, Elmer J. Hollstein, Chao-Yang Hsu
  • Patent number: 5310868
    Abstract: New catalyst compositions comprise sulfated and calcined mixtures of (1) a support comprising an oxide or hydroxide of a Group IV-A element, (2) an oxide or hydroxide of a Group VI, VII or VIII metal, (3) an oxide or hydroxide of a Group I-B, II-B, III-A, III-B, IV-B, V-A or VI-A metal and (4) a metal of the Lanthanide Series of the Periodic Table. A process for alkylation of acyclic saturated compounds with acyclic unsaturated compounds utilizing such catalyst compositions.
    Type: Grant
    Filed: December 17, 1992
    Date of Patent: May 10, 1994
    Assignee: Sun Company, Inc.
    Inventors: Howard P. Angstadt, Elmer J. Hollstein, Chao-Yang Hsu
  • Patent number: 5292986
    Abstract: A novel alkylation catalyst is described which is used in processes for alkylating olefin hydrocarbons with isoparaffin hydrocarbons to produce high octane alkylate products suitable for use as a blending component of gasoline motor fuel. The novel catalyst comprises a mixture of a Lewis acid, a strong Bronsted acid, and a predominant amount of a weaker acid. The novel alkylation catalyst is utilized in a novel process for alkylating olefin hydrocarbons with isoparaffin hydrocarbons. Specifically the novel catalyst comprises antimony pentaflouride, trifluoromethanesulfonic acid and a predominant amount of methanesulfonic acid.
    Type: Grant
    Filed: April 20, 1992
    Date of Patent: March 8, 1994
    Assignee: Phillips Petroleum Company
    Inventor: Ronald G. Abbott
  • Patent number: 5292982
    Abstract: This invention provides an isoparaffin-olefin alkylation catalyst composition comprising hydrofluoric acid, an additive, and a superacid promoter. The additive is present in concentration sufficient to effect deactivation of the hydrofluoric acid for isoparaffin-olefin alkylation such that the catalytic properties of said admixture of the hydrofluoric acid and the additive, in the absence of superacid promoter are characterized by the conversion of a mixed isoparaffin-olefin stream to product containing more than about 0.1 weight percent of alkyl halide.
    Type: Grant
    Filed: November 12, 1992
    Date of Patent: March 8, 1994
    Assignee: Mobil Oil Corporation
    Inventors: Kenneth J. Del Rossi, Albin Huss, Jr.
  • Patent number: 5284990
    Abstract: A method for converting HF alkylation unit to a sulfuric acid alkylation unit comprising the steps of retaining a reactor, an acid settler and a fractionation section from the HF alkylation unit and modifying at least a portion of the HF alkylation unit to produce a converted alkylation unit that is adapted to use sulfuric acid as a reaction catalyst.
    Type: Grant
    Filed: July 16, 1992
    Date of Patent: February 8, 1994
    Assignee: Stratco, Inc.
    Inventors: Jon R. Peterson, John B. Scott
  • Patent number: 5276242
    Abstract: In one embodiment of this invention, a process for alkylating C.sub.3 -C.sub.6 alkanes (paraffins) with C.sub.3 -C.sub.6 alkenes (monoolefins) employs a catalyst composition which has been prepared by heating a mixture consisting essentially of aluminum chloride, at least one metal sulfate (CuSO.sub.4, FeSO.sub.4, NiSO.sub.4, MgSO.sub.4, CaSO.sub.4 or combinations thereof), at least one inorganic refractory support material (alumina, silica, silica-alumina, aluminum phosphate, aluminum phosphate/oxide or combinations thereof), and at least one chlorinated hydrocarbon (preferably carbon tetrachloride). In another embodiment of this invention, a process for alkylating C.sub.3 -C.sub.6 alkanes with C.sub.3 -C.sub.6 alkenes employs a catalyst which has been prepared by heating a mixture consisting essentially of aluminum chloride, aluminum phosphate, silica, and at least one chlorinated hydrocarbon (preferably carbon tetrachloride).
    Type: Grant
    Filed: April 20, 1993
    Date of Patent: January 4, 1994
    Assignee: Phillips Petroleum Company
    Inventor: An-hsiang Wu
  • Patent number: 5276245
    Abstract: Described is a novel acid-soluble oil composition produced as a by-product from an alkylation reaction catalyzed by a sulfone-containing catalyst. Also described is a novel process for regenerating an alkylation catalyst which contains a sulfone component.
    Type: Grant
    Filed: June 26, 1992
    Date of Patent: January 4, 1994
    Assignee: Phillips Petroleum Company
    Inventors: Alan D. Eastman, Ronald G. Abbott
  • Patent number: 5254793
    Abstract: A composition of matter, which is an effective alkylation catalyst composition, is prepared by a method comprising heating, at a temperature of about 40.degree.-90.degree. C., (a) aluminum chloride, (b) boron phosphate, (c) alumina and/or silica, and (d) at least one chlorinated hydrocarbon (preferably CCl.sub.4), and subsequently separating the formed solid from the chlorinated hydrocarbon. The thus-prepared catalyst composition is employed in the alkylation of C.sub.2 -C.sub.7 alkane(s) with C.sub.2 -C.sub.7 alkene(s).
    Type: Grant
    Filed: January 25, 1993
    Date of Patent: October 19, 1993
    Assignee: Phillips Petroleum Company
    Inventors: An-hsiang Wu, Marvin M. Johnson
  • Patent number: 5245100
    Abstract: Aliphatic hydrocarbons are alkylated in the presence of a fluorinated sulphonic acid catalyst. The catalyst, which is adsorbed on a polar contact material, is pushed sequentially through first and second reactors by a feedstream and is then recycled back to the first reactor without reversing the flow direction of the process stream.
    Type: Grant
    Filed: April 28, 1992
    Date of Patent: September 14, 1993
    Assignee: Haldor Topsoe, S.A.
    Inventors: Sven I. Hommeltoft, Haldor F. A. Topsoe
  • Patent number: 5237122
    Abstract: Disclosed is a process for removing acid soluble oils, produced as an undesirable by-product of an HF catalyzed alkylation reaction, from a liquid containing a sulfone compound. The process includes the use of water to induce the formation of the two immiscible liquid phases of ASO and sulfone with water. The two immiscible phases can subsequently be separated from each other.
    Type: Grant
    Filed: August 24, 1992
    Date of Patent: August 17, 1993
    Assignee: Phillips Petroleum Company
    Inventors: Alan D. Eastman, Robert B. Eldridge, Richard L. Anderson, David P. Mann
  • Patent number: 5233119
    Abstract: A composition of matter comprises trifluoromethane on a solid support material which contains boron phosphate and/or boron sulfate. Preferred support materials are boron phosphate, boron phosphate-coated silica and boron sulfate-coated silica. The above composition is used as a catalyst for alkylating at least one C.sub.2 -C.sub.7 alkane (preferably isobutane or an isopentane) with at least one C.sub.2 -C.sub.7 alkene (preferably butene-2).
    Type: Grant
    Filed: November 9, 1992
    Date of Patent: August 3, 1993
    Assignee: Phillips Petroleum Company
    Inventors: Lyle R. Kallenbach, Roy F. Wright, David C. Miller
  • Patent number: 5221777
    Abstract: A process is provided for alkylating an isoparaffin with an olefin comprising effecting reaction of isoparaffin and olefin in the presence of an alkylation catalyst complex comprising a Lewis acid and a solid component, said solid component comprising a layered silicate and pillars of an oxide of at least one element selected from Groups IB, IIB, IIIA, IIIB, IVA, IVB, VA, VB, VIA, VIIA and VIIIA of the Periodic Table of the Elements separating the layers of the silicate.
    Type: Grant
    Filed: June 7, 1991
    Date of Patent: June 22, 1993
    Assignee: Mobil Oil Corporation
    Inventors: Albin Huss, Jr., Ivy D. Johnson
  • Patent number: 5220095
    Abstract: A process for liquid phase alkylation of a hydrocarbon substrate with an olefinic alkylating agent comprising the steps of passing a process stream of the hydrocarbon substrate and alkylating agent at alkylating conditions through a fixed bed alkylation reactor of particulate polar contact material in the presence of a fluorinated sulfonic acid catalyst.
    Type: Grant
    Filed: December 13, 1990
    Date of Patent: June 15, 1993
    Assignee: Haldor Topsoe A/S
    Inventors: Sven I. Hommeltoft, Haldor F. A. Topsoe
  • Patent number: 5220096
    Abstract: The invention provides an isoparaffin:olefin alkylation catalyst composition comprising at least one acid selected from the group consisting of hydrofluoric acid and the halogen-substituted sulfonic acids, together with a carbonate additive having the formula ROC(O)OR or ##STR1## wherein R is selected from alkyl, alkyl halide, aromatic and halogenated aromatic groups having from about 1 to about 30 carbon atoms, and an isoparaffin:olefin alkylation process employing the same.
    Type: Grant
    Filed: June 21, 1991
    Date of Patent: June 15, 1993
    Assignee: Mobil Oil Corporation
    Inventor: Kenneth J. Del Rossi
  • Patent number: 5220087
    Abstract: A fluorinated cation exchange resin catalyst is prepared by contacting a polymer containing pendant acid groups, particularly the radical --SO.sub.3 X with elemental fluorine in the presence of a water-free halogenated hydrocarbon liquid and thereafter converting the resulting pendant --SO.sub.3 X radical to a free acid.
    Type: Grant
    Filed: December 13, 1991
    Date of Patent: June 15, 1993
    Assignee: Allied-Signal Inc.
    Inventors: Morris B. Berenbaum, Thomas P. J. Izod, Donald R. Taylor, John D. Hewes
  • Patent number: 5202518
    Abstract: The invention provides an acid catalyst composition for alkylation of an isoparaffin with an olefin comprising from about 10 to about 90 percent of at least one acid selected from the group consisting of hydrofluoric acid and the halogen-substituted sulfonic acids, together with from about 10 to about 90 weight percent of a mono-, di-, or tri-carboxylic acid substituted member selected from the group consisting of alkanes, aromatics, haloalkanes, and haloaromatics having from about 1 to about 30 carbon atoms.
    Type: Grant
    Filed: September 18, 1991
    Date of Patent: April 13, 1993
    Assignee: Mobil Oil Corporation
    Inventor: Kenneth J. Del Rossi
  • Patent number: 5196628
    Abstract: The invention provides an isoparaffin:olefin alkylation catalyst composition and a process employing the same, wherein the catalyst composition comprises from about 10 to about 90 percent of at least one acid selected from the group consisting of hydrofluoric acid and the halogen-substituted sulfonic acids, together with from about 10 to about 90 weight percent of an additive having the formula R--(NO.sub.2).sub.n, wherein R is an alkyl, aromatic, alkyl halide or halide-substituted aromatic group having from about 1 to about 30 carbon atoms.
    Type: Grant
    Filed: June 21, 1991
    Date of Patent: March 23, 1993
    Assignee: Mobil Oil Corporation
    Inventors: Kenneth J. Del Rossi, Albin Huss, Jr.
  • Patent number: 5191150
    Abstract: A method for separating conjunct polymers and sulfolane from a mixture containing conjunct polymers, sulfolane, and hydrofluoric acid is disclosed, which method comprises the sequential steps of separating hydrofluoric acid from said mixture to provide an intermediate stream containing less than about 30 percent hydrofluoric acid by weight and gravitationally separating said intermediate stream into a sulfolane-enriched stream and a conjunct polymer-enriched stream.
    Type: Grant
    Filed: February 11, 1992
    Date of Patent: March 2, 1993
    Assignee: Mobil Oil Corporation
    Inventors: Jonathan E. Child, Tomas R. Melli, Sergei Yurchak
  • Patent number: 5189232
    Abstract: A method of making jet fuel compositions from lower alkyl cyclopentanes and C.sub.5 -C.sub.8 olefins via a dehydrocondensation reaction in the presence of sulfuric acid or hydrofluoric acid. The reaction product contains a predominance of decalins and has high density, high heat of combustion and low freezing point.
    Type: Grant
    Filed: June 27, 1991
    Date of Patent: February 23, 1993
    Assignee: University of Utah
    Inventors: Joseph S. Shabtai, Alex G. Oblad, Chi H. Tsai
  • Patent number: 5120895
    Abstract: A process and apparatus are disclosed for acid continuous alkylation of a hydrocarbon-containing feedstream in which the inventory of acid is reduced. The apparatus used combines a reactor, settler and heat exchanger in a single vessel. The acid phase flows out of the reactor only for acid makeup, to account for acid consumption, and regeneration.
    Type: Grant
    Filed: March 4, 1991
    Date of Patent: June 9, 1992
    Assignee: Mobil Oil Corp.
    Inventors: Jonathan E. Child, Tomas R. Melli
  • Patent number: 5110778
    Abstract: Boron, aluminum and gallium C.sub.1 -C.sub.18 perfluoroalkane-sulfonates (CF.sub.3 (CF.sub.2).sub.n SO.sub.3).sub.3 M (M=B, A1, Ga; n=0-17) as well as perfluororesin sulfonates such as Nafionates are new, highly effective Friedel-Crafts catalysts. In contrast to volatile aluminum and boron trihalides, the Group III-B perfluoroalkanesulfonates are generally of low or no volatility and, except for boron triflate and some of its homologs, only sparingly soluble incommon organic solvents. This allows their use as solid or supported Friedel-Crafts catalysts of wide utility and scope in continuous heterogenous catalytic processes. At the same time, boron triflate and related lower perfluoroalkanesulfonates are particularly efficient soluble catalysts in solution reactions.
    Type: Grant
    Filed: October 23, 1987
    Date of Patent: May 5, 1992
    Inventor: George A. Olah
  • Patent number: 5105047
    Abstract: Improved processes for acid-catalyzed oligomerization of olefins and alkylation of toluene are disclosed using a catalyst blend of at least one perfluorinated ion-exchange polymer containing sulfonic acid groups and at least one polymer diluent in a nonpolar reaction mixture.
    Type: Grant
    Filed: August 2, 1989
    Date of Patent: April 14, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Francis J. Waller
  • Patent number: 5095168
    Abstract: A cold temperature alkylation reaction process, at -6.degree. C. to 0.degree. C., the production of isoparaffins useful as a high octane fuel additive derived from the reaction of C.sub.3 -C.sub.5 olefins and isobutane in the presence of 92-95% sulfuric acid.
    Type: Grant
    Filed: November 8, 1989
    Date of Patent: March 10, 1992
    Assignee: Stratco, Inc.
    Inventor: Ken Kranz
  • Patent number: 5015795
    Abstract: The thermal stability of synthetic lubricants composed of alpha-olefin oligomers is improved by reaction with an olefin such as decene or the lower molecular weight, non-lubricant range olefins produced in the course of the oligomerization of 1-alkenes. The alkylation of the lube range oligomer is carried out using acidic alkylation catalyst such as solid, open-pore catalyst, e.g., fluorided alumina.The improved lubricant compositions of the present invention comprise a high viscosity index liquid lubricant oligomer composition containing C.sub.30 -C.sub.1300 hydrocarbons with at least one higher alkyl branch per oligomer molecule, said alkyl branch containing between 12 and 40 carbon atoms. In a preferred embodiment the novel alkylated lubricant composition has a methyl to methylene branch ratio of less than 0.19 and pour point below -15.degree. C.
    Type: Grant
    Filed: August 3, 1990
    Date of Patent: May 14, 1991
    Assignee: Mobil Oil Corporation
    Inventor: Bruce P. Pelrine
  • Patent number: 4967034
    Abstract: The invention relates to a process for the vapor phase alkylation of alkanes or aromatic hydrocarbons comprising (a) adsorbing an alkene on a dry cation exchange resin in its hydrogen form and (b) reacting said adsorbed alkene with at least one alkane or at least one aromatic hydrocarbon.
    Type: Grant
    Filed: August 16, 1989
    Date of Patent: October 30, 1990
    Assignee: Energia Andina Ltd.
    Inventors: Jorge P. Miller, Miguel F. Kling
  • Patent number: 4738771
    Abstract: A novel catalytic absorbent composition is prepared with a synthetic copper or silver carbonate-containing material. The absorbent is useful for removing hydrogen sulfide and mercaptan sulfur from hydrocarbon oils, especially from feedstreams to a reformer.
    Type: Grant
    Filed: January 9, 1986
    Date of Patent: April 19, 1988
    Assignee: Union Oil Company of California
    Inventors: J. Wayne Miller, John W. Ward
  • Patent number: 4650918
    Abstract: Hydrocarbon alkylation processes which are catalyzed by acids are promoted by the addition of an alkylation promoter which is a combination of a new carboxylic acid having the structural formula ##STR1## wherein R, R.sup.1 and R.sup.2 are alkyl groups and at least one aromatic hydrocarbon sulfonic acid selected from compounds having the structure ##STR2## wherein R.sup.3 is H or an alkyl group and R.sup.4 is an alkyl group.
    Type: Grant
    Filed: November 25, 1985
    Date of Patent: March 17, 1987
    Assignee: Atlantic Richfield Company
    Inventors: Richard F. Miller, Marilyn W. Blaschke
  • Patent number: 4636488
    Abstract: A novel hydrocarbon alkylation catalyst is disclosed comprising a mineral acid and an ether component. A process for utilizing the novel catalyst is also disclosed.
    Type: Grant
    Filed: August 12, 1985
    Date of Patent: January 13, 1987
    Assignee: UOP Inc.
    Inventors: Tamotsu Imai, Joseph A. Kocal
  • Patent number: 4613723
    Abstract: The present invention relates to supported superacidic catalysts comprising C.sub.4 -C.sub.18, preferentially C.sub.6 to C.sub.12, perfluorinated alkanesulfonic acid absorbed on suitable supports, such as fluoridated alumina, alumina silica and other chalcides having bonded thereto subsequently a Lewis acid compound selected from the higher valency fluorides of the elements of Groups IIA, IIIA, IVB, VA or VIB of the Periodic Table. The invention includes a process for catalytic transformation of hydrocarbons.
    Type: Grant
    Filed: January 3, 1984
    Date of Patent: September 23, 1986
    Assignee: PCUK-Produits Chimiques Ugine Kuhlmann
    Inventor: George A. Olah
  • Patent number: 4560825
    Abstract: Disclosed is an alkylation process comprising the step of contacting a paraffinic compound, capable of forming a carbonium ion under strong acid conditions, with an olefin in the presence of a strong acid system comprised of an acid component and a mixture comprised of: (a) one or more adamantane derivatives containing at least one unsubstituted bridgehead position and which is capable of being protonated, or hydrogen bonded to, or dissociated by an acid; and (b) one or more surfactants capable of stabilizing the one or more adamantane derivatives of (a) above at a hydrocarbon-acid interface.
    Type: Grant
    Filed: December 18, 1984
    Date of Patent: December 24, 1985
    Assignee: Exxon Research & Engineering Company
    Inventors: George M. Kramer, Edwin R. Ernst
  • Patent number: 4547474
    Abstract: The present invention relates to supported superacidic catalysts comprising C.sub.4 -C.sub.18, preferentially C.sub.6 to C.sub.12, perfluorinated alkanesulfonic acid absorbed on suitable supports, such as fluorinated alumina, alumina silica and other chalcides having bonded thereto subsequently a Lewis acid compound selected from the higher valency fluorides of the elements of Groups IIA, IIIA, IVB, VA or VIB of the Periodic Table. The invention includes a process for catalytic transformation of hydrocarbons.
    Type: Grant
    Filed: January 3, 1984
    Date of Patent: October 15, 1985
    Assignee: Atochem
    Inventor: George A. Olah
  • Patent number: 4544794
    Abstract: The efficiency of acid catalyzed alkylation of alkanes with olefins is improved by conducting the alkylation in the presence of small amounts of a mixture of a neo acid and another fatty acid having 10 to 30 carbon atoms.
    Type: Grant
    Filed: December 10, 1984
    Date of Patent: October 1, 1985
    Assignee: Atlantic Richfield Company
    Inventors: Richard F. Miller, Michael P. Nicholson
  • Patent number: 4544795
    Abstract: The efficiency of acid catalyzed alkylation of alkanes with olefins is improved by conducting the alkylation in the presence of small amounts of a fatty acid having 16 to 40 carbon atoms.
    Type: Grant
    Filed: December 10, 1984
    Date of Patent: October 1, 1985
    Assignee: Atlantic Richfield Company
    Inventors: Richard F. Miller, Michael P. Nicholson
  • Patent number: 4426545
    Abstract: A process is described for paraffin-olefin alkylation under strong acid conditions in which an adamantylalkyl carboxylic acid or sulfonic acid is used to substantially improve the efficiency of reaction.
    Type: Grant
    Filed: March 15, 1983
    Date of Patent: January 17, 1984
    Assignee: Exxon Research and Engineering Co.
    Inventor: George M. Kramer
  • Patent number: 4423277
    Abstract: A method for utilizing low level or waste heat in a petroleum refinery through absorption refrigeration of isoparaffinic hydrocarbons, e.g., isobutane. In an alkylation process, an olefin is contacted with a molar excess of isoparaffinic hydrocarbons to produce an alkylate. A portion of unreacted isoparaffinic hydrocarbons is vaporized to provide refrigeration. They are cooled and condensed by contact with a lean oil absorbent. They are recovered from the absorbent by use of low level heat in a distillation step and returned to the reaction zone.
    Type: Grant
    Filed: June 25, 1982
    Date of Patent: December 27, 1983
    Inventor: William R. Stroud
  • Patent number: 4357481
    Abstract: A process is described for paraffin-olefin alkylation under strong acid conditions in which an adamantane hydrocarbon is used to substantially increase the reaction rate of the alkylation.
    Type: Grant
    Filed: August 31, 1981
    Date of Patent: November 2, 1982
    Assignee: Exxon Research and Engineering Co.
    Inventor: George M. Kramer
  • Patent number: 4357482
    Abstract: A process is described for paraffin-olefin alkylation under strong acid conditions in which an aminoalkyladamantane hydrocarbon is used to substantially improve the reaction.
    Type: Grant
    Filed: August 31, 1981
    Date of Patent: November 2, 1982
    Assignee: Exxon Research and Engineering Co.
    Inventor: George M. Kramer
  • Patent number: 4304724
    Abstract: The present invention provides a process for making anthraquinone by the cyclization reaction of orthobenzoylbenzoic acid. The process uses as a catalyst a cation-exchange resin formed from a polymer with a polytetrafluoroethylene backbone and sulfonic-acid sidechains.
    Type: Grant
    Filed: December 22, 1980
    Date of Patent: December 8, 1981
    Assignee: The Dow Chemical Company
    Inventor: Michael O. Nutt
  • Patent number: 4293729
    Abstract: Improvements in heat exchanging of distillation steps in sulfuric acid alkylation processes; removing water from the vaporous overhead fraction of a sulfuric acid alkylation process distillation step or deisobutanizer to enable mixing thereof with the vaporous hydrocarbon effluent from the reaction zone which contains sulfur dioxide vapors sulfur trioxide and H.sub.2 SO.sub.4 mist, thus permitting mixing of the vaporous fraction and effluent for compression before use as a compressed heat exchanging medium in the alkylation process; sulfuric acid alkylation with deisobutanizer tower overhead effluent acid wash.
    Type: Grant
    Filed: July 8, 1980
    Date of Patent: October 6, 1981
    Assignee: Stratford/Graham Engineering Corp.
    Inventors: Norman P. Kolb, Orlando Webb
  • Patent number: 4260846
    Abstract: An improved cyclic process for the alkylation of isoparaffins with olefins in the presence of a circulating concentrated sulfuric acid catalyst is disclosed. Improvement in the octane rating of the product alkylate is achieved by periodic fortification of the sulfuric acid catalyst with a sulfur trioxide-bearing fortifying agent under conditions wherein the harmful effects caused by contact of the sulfur trioxide with the hydrocarbons in the alkylation zone are minimized. The acid catalyst is fortified during less than about 15% of the cycles of the circulating acid catalyst through the alkylation system to maintain the water content of the acid catalyst in the range of above about 1% and below about 4% by weight. The process effects not only essentially 100% utilization of the fortifying agent for water removal but also improves the octane rating of the product alkylate while simultaneously extending the service life of the acid catalyst by allowing use of the catalyst having higher organic content.
    Type: Grant
    Filed: June 11, 1979
    Date of Patent: April 7, 1981
    Assignee: Allied Chemical Corporation
    Inventors: Bela I. Karsay, Robert L. Sturtevant, Alan B. Gancy
  • Patent number: 4218575
    Abstract: Improvements in alkylation effluent flash vaporization systems used in processes of alkylating isoparaffinic hydrocarbons with olefinic hydrocarbons in the presence of acid catalyst and an excess of isoparaffinic hydrocarbons; improvements in heat sources used in such alkylation effluent flash vaporization systems, specifically utilizing hot and compressed isoparaffinic hydrocarbon vapors generally available in such systems from such sources as fractionation (deisobutanizer) overhead or vapor flashing processes utilized in cooling the reaction step or both; improvements in alkylation effluent flash vaporization systems which reduce the load on the conventional step of retrieving excess isoparaffinic hydrocarbons from the alkylation reaction effluent for recycle to the reaction step.
    Type: Grant
    Filed: April 10, 1978
    Date of Patent: August 19, 1980
    Assignee: Stratford/Graham Engineering Corporation
    Inventor: Orlando Webb, Jr.
  • Patent number: 4214114
    Abstract: A process for the acid-catalyzed alkylation of an isoparaffinic hydrocarbon with an olefinic hydrocarbon is disclosed. The alkylation is effected at alkylation reaction conditions resulting in an alkylation reaction mixture containing a vapor phase generated by the exothermic heat of reaction. The vapor phase so generated has a cooling effect permitting the alkylation reaction to be effected at lower temperatures more conducive to higher quality alkylation product.
    Type: Grant
    Filed: January 26, 1979
    Date of Patent: July 22, 1980
    Assignee: UOP Inc.
    Inventor: Don B. Carson
  • Patent number: 4209656
    Abstract: A process for alkylating isoparaffin hydrocarbon with olefin hydrocarbon in the presence of a sulfuric acid alkylation catalyst wherein hydrocarbon effluent from an alkylation reaction zone is treated in the liquid phase with bauxite or similar adsorbent for removing acid alkyl sulfates, neutral alkyl sulfate and other corrosive species, wherein treated alkylation effluent is flashed at reduced pressure in indirect heat exchange contact with alkylation reaction mixture in said alkylation reaction zone for refrigerating said reaction mixture, and wherein flashed vapors and unflashed liquid are fractionated for recovery of isoparaffin recycle and alkylated hydrocarbon product.
    Type: Grant
    Filed: October 23, 1978
    Date of Patent: June 24, 1980
    Assignee: Texaco Inc.
    Inventors: Gerald F. Prescott, Charles T. Lewis, Jr.
  • Patent number: 4205196
    Abstract: A method of alkylating an alkylatable hydrocarbon with different alkylating agents, at different reaction temperatures and in a single reaction zone, in which an alkylatable hydrocarbon is contacted with an acid-type catalyst and at different points in an elongated reaction zone, the reaction zone effluent is separated into a hydrocarbon phase and a catalyst recycle phase and the reaction temperatures of the various alkylating agents are maintained at different temperatures by splitting the recycle catalyst phase into an equal number of streams and adjusting the reaction temperatures by adjusting the temperatures of the recycle catalyst phase streams, the relative proportions of the recycle catalyst phase streams or both. A method of starting-up the process and apparatus for conducting the process are also disclosed.
    Type: Grant
    Filed: April 5, 1979
    Date of Patent: May 27, 1980
    Assignee: Phillips Petroleum Company
    Inventors: Donald J. Makovec, Donald M. Haskell
  • Patent number: 4201730
    Abstract: A process and a catalyst composition to effect hydrocarbon transformations comprising contacting a hydrocarbon charge with a catalyst comprising a fluorinated graphite having a fluorine to carbon atomic ratio of from about 0.1 to 1 and having bonded thereto from about 5 to 50 percent by weight of the total weight of the catalyst of at least one Lewis acid compound selected from halides of the elements of Group IIA, IIIA, IVB, V or VIB of the Periodic Table. In addition, the catalysts may also have bonded thereto a minor portion of a Bronsted acid and/or a metal of Group IVB or VIII of the Periodic Table.
    Type: Grant
    Filed: February 16, 1978
    Date of Patent: May 6, 1980
    Assignee: Produits Chimiques Ugine Kuhlmann
    Inventor: George A. Olah
  • Patent number: 4180696
    Abstract: An alkylation process wherein isoparaffin hydrocarbons are alkylated with olefin hydrocarbons in the presence of an alkylation catalyst comprising H.sub.2 SO.sub.4 to yield alkylated hydrocarbons suitable for use in motor fuels. Such process includes an isoparaffin pretreatment step wherein isoparaffin charge is contacted with spent alkylation catalyst to remove contaminants from the isoparaffin which are reactive with sulfuric acid under alkylation conditions.
    Type: Grant
    Filed: October 23, 1978
    Date of Patent: December 25, 1979
    Assignee: Texaco Inc.
    Inventors: Charles T. Lewis, Jr., Gerald F. Prescott
  • Patent number: 4180695
    Abstract: A process and catalyst for the alkylation of isoparafffins is disclosed. The catalyst is an unsupported solid perfluorinated polymer containing pendent sulfonic acid groups.
    Type: Grant
    Filed: December 20, 1976
    Date of Patent: December 25, 1979
    Assignee: Shell Oil Company
    Inventor: James D. McClure