Sorbate Is Nonhydrocarbon Or Chemically Undetermined Component, E.g., "color-former", Etc. Patents (Class 585/823)
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Patent number: 5096686Abstract: The present invention relates to a metallo gallium silicate zeolite, designated as ECR-9. It also relates to a process for preparation of the zeolite. The zeolite may be employed in catalytic, absorbent or separation applications, particularly in the separation of small molecules, or normal from iso-paraffins, or the preferential reaction of n-paraffins in a mixed hydrocarbon stream.Type: GrantFiled: October 9, 1990Date of Patent: March 17, 1992Assignee: Exxon Research and Engineering CompanyInventors: David E. W. Vaughan, Karl G. Strohmaier
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Patent number: 5096681Abstract: Trialkyl arsine (in particular trimethyl arsine) is removed from a fluid (e.g., a hydrocarbon-containing gas) by contacting the fluid with a sorbent material comprising vanadium pentoxide (V.sub.2 O.sub.5) and an inorganic support material (preferably alumina or silica or vanadium metal).Type: GrantFiled: February 22, 1991Date of Patent: March 17, 1992Assignee: Phillips Petroleum CompanyInventor: Tin-Tack P. Cheung
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Patent number: 5085844Abstract: Trialkyl arsine (in particular trimethyl arsine) is removed from a fluid (e.g., a hydrocarbon-containing gas) by contacting the fluid with a sorbent material comprising (a) elemental sulfur, and (b) an inorganic support material, preferably alumina and/or silica and/or titania and/or activated carbon.Type: GrantFiled: November 28, 1990Date of Patent: February 4, 1992Assignee: Phillips Petroleum CompanyInventors: Gerhard P. Nowack, Tin-Tack P. Cheung
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Patent number: 5082569Abstract: The metal concentration in a liquid hydrocarbon stream can be reduced to no more than 0.1 parts per billion by contacting the stream sequentially with a cation exchange resin and a silver-impregnated zeolitic molecular sieve, preferably in that order. The method is particularly useful for removal of mercury and antimony from liquified petroleum gas.Type: GrantFiled: December 3, 1990Date of Patent: January 21, 1992Assignee: UOPInventors: Edwin H. Homeier, Peter O. Hennes, Padma V. Tota
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Patent number: 5081325Abstract: This invention relates to a method for removing polar bodies and other contaminants, including color bodies, from unsaturated hydrocarbon streams having a boiling range between 280.degree.-310.degree. F. by contacting the unsaturated hydrocarbon stream with a neutral clay comprising an oxide state of at least one and preferably two of Si, Al, Fe, Ca, Mg, K, Na, S, and P, particularly attapulgite clay. The process is most effective if the unsaturated hydrocarbon stream is first dried using a molecular sieve.Type: GrantFiled: October 12, 1990Date of Patent: January 14, 1992Assignee: Lyondell Petrochemical CompanyInventors: Robert J. Haynal, Stewart H. Presnall, Beverly B. Slimp, Jr.
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Patent number: 5064626Abstract: Trialkyl arsine (in particular trimethyl arsine) is removed from a fluid (e.g. a hydrocarbon-containing gas) by contacting the fluid with a sorbent material comprising (a) a transition metal polysulfide (preferably Fe.sub.2 (S.sub.3).sub.3, and (b) an inorganic support material (preferably alumina).Type: GrantFiled: November 28, 1990Date of Patent: November 12, 1991Assignee: Phillips Petroleum CompanyInventors: Marvin M. Johnson, Patricia A. Tooley, Gary A. Delzer, Gerhard P. Nowack, Ted H. Cymbaluk
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Patent number: 5057642Abstract: Basic impurities, in particular ammonia, are removed from monoolefin-containing feeds, in particular an isobutylene-containing feed, by contacting with a hydrated acidic clay.Type: GrantFiled: April 18, 1991Date of Patent: October 15, 1991Assignee: Phillips Petroleum CompanyInventors: Marvin M. Johnson, Gerhard P. Nowack, Mary E. Rezac
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Patent number: 5043420Abstract: A process to hydrogenate and deodorize a polyisobutylene polymer of from 100 to 4000 molecular weight and cosmetic dermatological compositions containing the hydrogenated, deodorized polyisobutylene polymers are disclosed.Type: GrantFiled: May 4, 1990Date of Patent: August 27, 1991Assignee: Amoco CorporationInventors: Egils Vitands, Kelley R. Lane
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Patent number: 5026482Abstract: The present invention is a concentration swing adsorption process for separating a liquid phase feedstock comprising a more adsorbable component (A) and a less adsorbable component (B) with respect to an adsorbent. The process is operated in a system comprising a single or a plurality of adsorption columns containing the adsorbent which are operated in cycle in a predetermined sequence. The following operational steps are performed in the order recited in each of the adsorption columns in its turn. Feedstock is passed through the adsorbent and the more adsorbable component (A) is selectively adsorbed while a stream enriched in component (B) is discharged from the adsorption column. The adsorbent is rinsed in a direction co-current to the feedstock with the more adsorbable component (A) whereby the less adsorbable component (B) is displaced from the adsorbent and a stream comprising a mixture of the more adsorbable component (A) and the less adsorbable component (B) is withdrawn from the adsorption column.Type: GrantFiled: September 26, 1989Date of Patent: June 25, 1991Assignee: Air Products and Chemicals, Inc.Inventor: Shivaji Sircar
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Patent number: 5025112Abstract: A method for purifying a cumene recycle stream by removing 2-phenyl-2-propanol and cumene hydroperoxide before the cumene is distilled and recycled to the peroxidation reactor which comprises reacting the recycle cumene in the presence of an acid treated montmorillonite clay of the formula:M.sub.x/n.sup.n+.sub..y H.sub.2 O(Al.sub.4-x Mg.sub.x) (Si.sub.8)O.sub.20 (OH).sub.4or in the presence of a catalyst comprising phosphoric acid on silica.Type: GrantFiled: September 10, 1990Date of Patent: June 18, 1991Assignee: Texaco Chemical CompanyInventors: John R. Sanderson, Edward T. Marquis, John F. Knifton
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Patent number: 4992620Abstract: Trialkyl arsines are removed from fluids, in particular gases, by contacting with a solid sorbent material containing at least one manganese oxide (preferably MnO.sub.2) and at least one Group IB metal oxide (preferably CuO). In a preferred feature, the used solid sorbent material is regenerated by oxidizing treatment, washing with an aqueous liquid, and drying.Type: GrantFiled: November 21, 1989Date of Patent: February 12, 1991Assignee: Phillips Petroleum CompanyInventors: Gerhard P. Nowack, Marvin M. Johnson, Joseph B. Cross, Patricia A. Tooley, Ted H. Cymbaluk
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Patent number: 4952746Abstract: A process for the removal of hydrogenatable hydrocarbonaceous compounds comprising a component selected from the group consisting of halogen, metal, sulfur, oxygen and nitrogen from a hydrocarbonaceous stream which comprises the steps of: (a) contacting the hydrocarbonaceous stream with an adsorbent to remove at least a portion of the hydrogenatable hydrocarbonaceous compounds from the hydrocarbonaceous stream to provide a hydrocarbonaceous stream having a reduced concentration of hydrogenatable hydrocarbonaceous compounds; (b) contacting spent adsorbent with an elution solvent to remove the hydrogenatable hydrocarbonaceous compounds from the spent adsorbent thereby regenerating the adsorbent; (c) contacting the elution solvent in admixture with the hydrogenatable hydrocarbonaceous compounds in the presence of hydrogen with a hydrogenation catalyst; (d) contacting the effluent with an aqueous scrubbing solution; (e) introducing a resulting admixture of the reaction zone effluent and the aqueous scrubbing soluType: GrantFiled: January 15, 1988Date of Patent: August 28, 1990Assignee: UOPInventors: Russell W. Johnson, Lee Hilfman
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Patent number: 4950408Abstract: The invention is concerned with a process for removing mercury from a non-polar organic medium like a liquid hydrocarbon mixture, most preferably a natural gas condensate, by contacting the medium to be treated with a solid adsorbent, preferably an ion-exchange resin, containing active thiol-groups. By this method it is possible to remove mercury from the treated medium in an amount of more than 97%.Type: GrantFiled: December 2, 1988Date of Patent: August 21, 1990Assignee: Stamicarbon B.V.Inventors: Henricus A. M. Duisters, Paul C. Van Geem
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Patent number: 4923961Abstract: A process to hydrogenate and deodorize a polyisobutylene polymer of from 100 to 4000 molecular weight and cosmetic dermatological compositions containing the hydrogenated, deodorized polyisobutylene polymers are disclosed.Type: GrantFiled: October 13, 1988Date of Patent: May 8, 1990Assignee: Amoco CorporationInventors: Egils Vitands, Kelley R. Lane
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Patent number: 4912873Abstract: Treatment of diesel or jet fuel with a non-ionic, macroreticular, cross-linked, acrylic aliphatic ester resin reduces polar impurities and (diesel) color.Type: GrantFiled: February 17, 1989Date of Patent: April 3, 1990Assignee: Shell Oil CompanyInventors: Zaida Diaz, James H. Miller
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Patent number: 4911825Abstract: Process for elimination of mercury in hydrocarbon charges wherein said charge is contacted, under hydrogen, with a catalyst containing at least one metal from the group consisting of nickel, cobalt, iron and palladium followed by--or mixed with--a capture mass containing sulfur or a metal sulfide.Type: GrantFiled: March 10, 1989Date of Patent: March 27, 1990Assignee: Institut Francais du PetroleInventors: Michel Roussel, Philippe Courty, Jean-Paul Boitiaux, Jean Cosyns
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Patent number: 4877920Abstract: A process for removing arsenic contaminants from a hydrocarbon fluid by contacting the fluid with copper oxide supported on activated carbon.Type: GrantFiled: June 8, 1988Date of Patent: October 31, 1989Assignee: Sun Refining and Marketing CompanyInventors: Richard A. Lush, Hsiang-Wei Tsao
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Patent number: 4861939Abstract: The present invention relates to a process for removing arsine from a light olefin to containing hydrocarbon feedstock, said process comprising the steps of (a) passing said feedstock over an absorbent material comprising nickel deposited on a support material wherein nickel is present as both nickel oxide and metallic nickel; and (b) recovering a stream having a substantially reduced arsine content.Type: GrantFiled: September 23, 1988Date of Patent: August 29, 1989Assignee: Labofina, S.A.Inventors: Guy Debras, Philippe Bodart
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Patent number: 4838946Abstract: When a liquid chlorosilane compound inadvertently runs out of a container, the liquid must be disposed by absorbing using an absorbent since chlorosilane compounds are generally very dangerous and toxic. Instead of dry sand conventionally used as an absorbent in such a purpose, the invention purposes that a very efficient effect of absorption can be obtained by using a silica-, silica/alumina-based porous ceramic material or a mixture of them as an absorbent without gas evolution in the liquid and with little temperature increase of the liquid when the absorbent material has a specified content of silica or silica/alumina and a pore diameter distribution.Type: GrantFiled: May 25, 1988Date of Patent: June 13, 1989Assignee: Shin-Etsu Handotai Co., Ltd.Inventors: Hisayoshi Yamaguchi, Tamotsu Yanagisawa, Minoru Kobayashi
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Patent number: 4835338Abstract: An adsorption process is disclosed for removal of carbonyl sulfide (COS) from a liquid hydrocarbon which comprises providing an activated alumina adsorbent which has preferably impregnated with a compound selected from the class consisting of one or more alkali metal compounds, one or more alkaline earth metal compounds, or a mixture of such compounds; passing a liquid hydrocarbon containing COS through the activated alumina adsorbent at a flow rate sufficient to adsorb enough COS in the liquid hydrocarbon to lower the COS content of the liquid hydrocarbon to less than 1 ppm; monitoring the effluent liquid hydrocarbon to determine when the capacity of the adsorbent to adsorb the COS has been reached; and then regenerating the activated alumina adsorbent by passing a gas, heated to a temperature of from about 150.degree. to about 300.degree. C., through the adsorbent for a period of time sufficient to remove a substantial amount of the sulfur adsorbed thereon.Type: GrantFiled: August 31, 1987Date of Patent: May 30, 1989Assignee: Aluminum Company of AmericaInventor: Paul K. T. Liu
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Patent number: 4795545Abstract: A pretreatment process for removal of contaminants from a light hydrocarbon feedstock is presented. The feedstock is passed to a first adsorption zone containing a molecular sieve and thereafter passed to a second adsorption zone containing activated alumina. The process produces a hydrocarbon feedstock substantially free of sulfur compounds, oxygenates, and water. Such a process finds utility as a feed pretreatment step preceding a catalytic isomerization process.Type: GrantFiled: September 17, 1987Date of Patent: January 3, 1989Assignee: UOP Inc.Inventor: Robert J. Schmidt
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Patent number: 4721824Abstract: A method is provided for removing trace amounts of organic chlorides from feedstocks by passing the feedstock in contact with a guard bed catalyst comprising shaped particles formed by extruding a mixture of magnesium oxide and a binder inert to the feedstock. The process has particular importance in removing organic chlorides from toluene feedstocks prior to contacting toluene with a disproportionation or alkylation catalyst comprising magnesium-ZSM-5.Type: GrantFiled: March 12, 1987Date of Patent: January 26, 1988Assignee: Mobil Oil CorporationInventors: John P. McWilliams, Margaret I. Nemet-Mavrodin, Catherine T. Sigal, Robert C. Wilson, Jr.
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Patent number: 4717784Abstract: This invention relates to a process for the production of an isomerate gasoline blending component where the octane value of the isomerate is increased relative to the overall cost of the process. After isomerization, the separatory sieve of this invention selectively adsorbs unreacted normal paraffins and mono-methyl-branched paraffins but not di-methyl-branched paraffins. The preferred separatory sieve is ferrierite. This process is an improvement over prior Total Isomerization Processes (using a calcium-5A separatory sieve) to recycle only n-paraffins to the isomerization zone.Type: GrantFiled: December 10, 1986Date of Patent: January 5, 1988Assignee: Shell Oil CompanyInventors: Stephen C. Stem, Wayne E. Evans
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Patent number: 4717785Abstract: Phosphine impurities are effectively removed from higher olefin products containing such impurities by treatment of the olefin with a macroreticular cation exchange resin in the acid form. The invention is particularly useful in removing phosphine catalyst residues from the C.sub.6 and higher mono-olefin products of ethylene oligomerization reactions.Type: GrantFiled: December 10, 1986Date of Patent: January 5, 1988Assignee: Shell Oil CompanyInventor: Timm E. Paxson
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Patent number: 4713413Abstract: Halogenated hydrocarbons are removed from hydrocarbon solvents for reuse in a butyl rubber process by contacting the halide containing hydrocarbon solvent with alumina at a temperature of at least 20.degree. C. In particular 2-methyl-3-chloropropene-1, 2-methyl-1,2-dibromo-3-chloropropane and tribromo isobutane or mixtures thereof can be removed from a hydrocarbon solvent by the process of this invention. The halide removal is preferably carried out at a temperature of at least 40.degree. C., e.g., 60.degree. C. to 100.degree. C.Type: GrantFiled: December 27, 1985Date of Patent: December 15, 1987Assignee: Exxon Chemical Patents Inc.Inventors: Bruce R. Tegge, Frank G. Weary, Yasuo Sakaguchi
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Patent number: 4675463Abstract: An improved process for oligomerizing olefins is provided in which olefin feed is contacted with phosphoric acid catalyst to form an olefin oligomerization product containing phosphorous-containing foulant precursors. The olefin oligomerization product is then contacted with a foulant adsorbent comprising at least one member selected from the group consisting of alumina, activated alumina and magnesium oxide in an amount and under conditions sufficient to effect removal of at least a portion of said foulant precursors. The treated olefin oligomerization product stream can then be passed to downstream recovery and process equipment with minimized fouling.Type: GrantFiled: February 5, 1986Date of Patent: June 23, 1987Assignee: Exxon Chemical Patents Inc.Inventors: Alexandr P. Glivicky, Donald J. Norris
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Patent number: 4593148Abstract: Arsines are removed from gaseous stream, e.g., hydrocarbon or inert gas streams, comprising arsine impurities and also hydrogen sulfide, by contacting these gas streams with a sorbent material comprising copper oxide and zinc oxide. Preferably, the sorbent material is prepared by coprecipitating of hydroxides of copper and zinc and subsequent heating the hydroxides so as to convert the hydroxides to CuO and ZnO. Optionally, aluminum oxide is also present in the sorbent material.Type: GrantFiled: March 25, 1985Date of Patent: June 3, 1986Assignee: Phillips Petroleum CompanyInventors: Marvin M. Johnson, Gerhard P. Nowack
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Patent number: 4540842Abstract: Pentane derived from fractionation of sulfur-containing natural gasoline is desulfurized to low levels of sulfur, e.g., 1 ppm or below, in a process comprised of contacting the pentane in a first zone with molecular sieve adsorbent to remove dimethylsulfide and then in a second zone with activated carbon to remove carbon disulfide.Type: GrantFiled: January 16, 1984Date of Patent: September 10, 1985Assignee: El Paso Products CompanyInventor: George C. Allen
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Patent number: 4468476Abstract: An adsorbent is provided for removing color precursors from detergent range alkyl benzene prior to sulfonation. The adsorbent provided is a bauxite clay having at least one material selected from the group consisting of ferric oxide, titanium dioxide, and zirconium oxide and which contain from about 0.1 to about 20 percent by weight of sulfuric acid, said bauxite clay then being calcined at a temperature and time sufficient to activate the adsorbent prior to use.Type: GrantFiled: January 3, 1984Date of Patent: August 28, 1984Assignee: Conoco Inc.Inventors: Kang Yang, James D. Reedy
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Patent number: 4462896Abstract: Method of removing arsenic in hydrocarbons such as LPG, wherein arsenic compounds in the gaseous hydrocarbon are reacted with a metal oxide catalyst and adsorbed on the catalyst and partially oxidized by the catalyst.Type: GrantFiled: October 26, 1982Date of Patent: July 31, 1984Assignees: Osaka Petrochemical Industries Ltd., Toyo CCI Kabushiki KaishaInventors: Hiroshi Kitagawa, Teruyuki Onodera, Toshiyuki Fukushima, Yoriyuki Hayashi
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Patent number: 4454366Abstract: Spent boron trifluoride catalyst is removed from organic liquids by contacting the liquid with polyvinyl alcohol. For example, boron trifluoride catalyst is removed from 1-olefin oligomer product by passing the liquid oligomer through a bed of granular polyvinyl alcohol. The boron trifluoride is recovered from the polyvinyl alcohol and is recycled for use as a catalyst.Type: GrantFiled: December 15, 1982Date of Patent: June 12, 1984Assignee: Gulf Research & Development CompanyInventors: Roger F. Vogel, Ajay M. Madgavkar, Harold E. Swift
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Patent number: 4433197Abstract: Boron trifluoride is removed from coordination compounds contaminating organic liquids by contacting the contaminated liquid with silica. For example, boron trifluoride is removed from a boron trifluoride-n-butanol coordination compound contaminating a 1-olefin oligomer product by passing the contaminated liquid oligomer through a bed of silica.Type: GrantFiled: July 8, 1982Date of Patent: February 21, 1984Assignee: Gulf Research & Development CompanyInventors: Roger F. Vogel, Ajay M. Madgavkar, Harold E. Swift
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Patent number: 4433196Abstract: Extremely effective adsorbants are provided for removing color precursors from detergent range alkyl benzenes prior to sulfonation. The adsorbers provided are specific crystalline zeolites in a silica alumina matrix and bauxite clay having at least one material selected from the group consisting of ferric oxide, titanium dioxide and zirconium oxide which is activated by sulfuric acid then calcined to provide the effective adsorbant.Type: GrantFiled: June 25, 1982Date of Patent: February 21, 1984Assignee: Conoco Inc.Inventors: Kang Yang, James D. Reedy
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Patent number: 4423278Abstract: Color may be removed from colored polyphenylated alkane by contacting this material with certain adsorbants. The adsorbants provided comprise certain crystalline zeolites in a silica alumina matrix and bauxite clay having at least one material selected from the group consisting of ferric oxide, titanium oxide, and zirconium oxide, which is activated by sulfuric acid and then calcined to provide the effective adsorbant.Type: GrantFiled: January 17, 1983Date of Patent: December 27, 1983Assignee: Conoco Inc.Inventors: Kang Yang, James D. Reedy, S. E. McGuire, O. C. Kerfoot
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Patent number: 4417091Abstract: Fluorinated impurities are removed from olefin oligomers by extraction with a solid adsorbent; the oligomers have been obtained from monoolefins having 2-4 carbon atoms, in the presence of a catalyst obtained by contacting a bivalent nickel compound with a hydrocarbyl aluminum halide and a trifluoroacetic acid.Type: GrantFiled: April 29, 1982Date of Patent: November 22, 1983Assignee: Institut Francais du PetroleInventor: Jean Gaillard
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Patent number: 4384162Abstract: Boron trifluoride contaminant is removed from organic liquids by contacting the contaminated liquid with polyvinyl alcohol. For example, boron trifluoride catalyst is removed from 1-olefin oligomer product by passing the liquid oligomer through a bed of granular polyvinyl alcohol.Type: GrantFiled: July 8, 1982Date of Patent: May 17, 1983Assignee: Gulf Research & Development CompanyInventors: Roger F. Vogel, Ajay M. Madgavkar, Harold E. Swift
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Patent number: 4247729Abstract: A liquid product obtained by hydrodealkylation of hydrocarbon oil containing aromatic hydrocarbons is firstly subjected to rectification, then thus obtained substantially pure benzene is treated with clay substance under a temperature below 120.degree. C. A highly purified benzene especially good in color is obtained.Type: GrantFiled: April 5, 1979Date of Patent: January 27, 1981Assignee: Mitsubishi Petrochemical Company, LimitedInventors: Hideyuki Takahashi, Yoshiyuki Matsuoka, Susumu Hamanishi
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Patent number: 4243831Abstract: A process for the reduction of the peroxide number and color of olefins comprises contacting the olefin with an adsorbent and separating the contacted olefin from the adsorbent. The process is effective for internal olefins, a class of olefins in which reduction of peroxide number by conventional means is ineffective. Examples of effective adsorbents which may be employed in the process includes charcoal, alumina, silica, diatomaceous earth and montmorillonite clays.Type: GrantFiled: July 30, 1979Date of Patent: January 6, 1981Assignee: UOP Inc.Inventors: Thomas P. Malloy, George W. Lester
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Patent number: 4229612Abstract: The removal of color bodies from an olefinic or saturated endo-endo hexacyclic homodimer of norbornadiene or mixtures thereof is accomplished by the use of a serpentine clay. Also acid bentonite clay or a montmorillonite clay can be used to remove the color bodies from the saturated dimer. The saturated dimer has a high density and a high heat of combustion making it useful as a missile fuel. Removal of the color bodies avoids possible catalyst poisoning in the hydrogenation of the olefinic to the saturated dimer. Also removal of the color bodies from the saturated dimer eliminates the possible problem of a material precipitating out on engine turbine blades and causing maintenance or operational problems.Type: GrantFiled: January 29, 1979Date of Patent: October 21, 1980Assignee: Suntech, Inc.Inventors: Lewis W. Hall, Jr., David L. Kerr, Elmer J. Hollstein, Harry K. Myers, Jr., Abraham Schneider
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Patent number: 4210771Abstract: A process for virtually complete isomerization of the normal paraffin hydrocarbons contained in a feed stream consisting essentially of mixed normal and non-normal hydrocarbons, wherein the feedstock is first passed through an isomerization reactor and the hydrocarbons in the effluent from the reactor are passed through an adsorption section wherein the normals are adsorbed and the non-normals passed out of the system as an isomerate product. The fresh feed is controllably flow blended with the variable desorption effluent from the adsorber beds containing desorption normals and hydrogen purge gas in order to provide a constant flow of combined feed to the isomerization reactor.Type: GrantFiled: November 2, 1978Date of Patent: July 1, 1980Assignee: Union Carbide CorporationInventor: Thomas C. Holcombe