O-containing Sorbate Patents (Class 585/824)
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Patent number: 5246469Abstract: Distillate fuel is stabilized against degradation during storage by inserting into storage tanks solid materials containing polar sites to enable polar condensation of the fuel constituents active in degradation. Polyether or polyester polyurethane open cell foams are the prime solid stabilizers proposed.Type: GrantFiled: February 29, 1988Date of Patent: September 21, 1993Assignee: The Commonwealth of AustraliaInventors: William Arfelli, Alan Power, Richard Solly
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Patent number: 5245107Abstract: A process for the regeneration of oxygenate containing adsorbents uses regenerant streams such as LPG and isomerate products for the desorption of oxygenate compounds. The process discloses arrangements for the integration of regenerant treatment into the adsorption scheme and for the enhancement of the isomerate product. The integrated flowscheme can be used to remove sulfur and water from contaminated regenerants or to deliver the oxygenates into the gasoline pool.Type: GrantFiled: August 13, 1992Date of Patent: September 14, 1993Assignee: UOPInventors: Carmen M. Yon, Joe Quock, Henry Rastelli, Wim P. Reel
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Patent number: 5220101Abstract: A process is provided for separating at least one component from a mixture of components which comprises contacting the mixture with a composition comprising a functionalized inorganic, porous, non-layered crystalline phase having uniformly sized pores of at least about 13, e.g., at least about 15, Angstrom Units in diameter.Type: GrantFiled: July 22, 1992Date of Patent: June 15, 1993Assignee: Mobil Oil Corp.Inventors: Jeffrey S. Beck, David C. Calabro, Sharon B. McCullen, Bruce P. Pelrine, Kirk D. Schmitt, James C. Vartuli
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Patent number: 5220099Abstract: A process for purifying linear paraffins in which a hydrocarbon stream containing linear paraffins contaminated with aromatics, sulfur-, nitrogen-, and oxygen-containing compounds, and color bodies, but essentially free of olefins, is contacted with a zeolitic solid adsorbent such as a NaX zeolite or zeolite MgY. After adsorption the zeolitic solid adsorbent is desorbed with an alkyl-substituted aromatic desorbent such as toluene.Type: GrantFiled: August 31, 1988Date of Patent: June 15, 1993Assignee: Exxon Chemical Patents Inc.Inventors: James L. Schreiner, Robert A. Britton, Charles T. Dickson, Frederick A. Pehler, Jr.
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Patent number: 5198121Abstract: Water-containing mixtures of at least one hydrocarbon/halocarbon and hydrochloric acid, e.g., the methyl chloride feedstream in conventional process for the synthesis of chloromethanes, are desiccated by intimately contacting such mixtures with an effective drying amount of an essentially anhydrous drying agent that includes (i) a metal sulfate, chloride or perchlorate, or (ii) phosphorus pentoxide.Type: GrantFiled: November 26, 1991Date of Patent: March 30, 1993Assignee: AtochemInventors: Jean-Jacques Masini, Elie Ghenassia, Raymond Commandeur, Rene Clair, Jean-Louis Guillaumenq
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Patent number: 5191143Abstract: A method for the preparation of isobutylene substantially free from tertiary butyl formate and peroxides from a tertiary butyl alcohol feedstock contaminated with tertiary butyl formate and peroxides wherein the feedstock is continuously brought into contact with a bed of a catalyst consisting essentially of sulfuric acid impregnated alumina under reaction conditions including a temperature of about 150.degree. to about 400.degree. C. and a pressure of about 0 to about 3000 psig. at the rate of about 0.5 to about 10 g of feedstock per hour per cc of catalyst, to form a reaction product substantially completely free from tertiary butyl formate and peroxides.Type: GrantFiled: January 10, 1992Date of Patent: March 2, 1993Assignee: Texaco Chemical CompanyInventors: Wei-Yang Su, William A. Smith, Roya Tooloian
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Patent number: 5177298Abstract: A process for the regeneration of oxygenate containing adsorbents uses regenerant streams such as LPG and isomerate products for the desorption of oxygenate compounds. The process discloses arrangements for the integration of regenerant treatment into the adsorption scheme and for the enhancement of the isomerate product. The integrated flowscheme can be used to remove sulfur and water from contaminated regenerants or to deliver the oxygenates into the gasoline pool.Type: GrantFiled: June 18, 1991Date of Patent: January 5, 1993Assignee: UOPInventors: Carmen M. Yon, Joe Quock, Wim P. Reel, Henry Rastelli
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Patent number: 5171923Abstract: A process for purifying linear paraffins in which a hydrocarbon feedstream containing linear paraffins contaminated with aromatics, sulfur-, nitrogen-, and oxygen-containing compounds, and color bodies, and also containing up to about 5 wt % desorbent from effluent recycle, is contacted with a solid adsorbent such as a NaX zeolite or zeolite MgY; after adsorption the adsorbent is desorbed with an alkyl-substituted aromatic desorbent, such as toluene. As the adsorent bed is being desorbed, the initial effluent from the adsorption cycle will contain levels of desorbent and may be recycled to the hydrocarbon feedstream. Previous to the removal of impurities from the adsorbent by desorption, the desorbent displaces interstitial linear paraffins which are also recycled to the hydrocarbon feedstream.Type: GrantFiled: October 23, 1990Date of Patent: December 15, 1992Assignee: Exxon Chemical Patents Inc.Inventors: Charles T. Dickson, Janet R. Fitzke, Christopher L. Becker
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Patent number: 5109139Abstract: A process for purifying linear paraffins in which a hydrocarbon stream containing linear paraffins contaminated with aromatics, sulfur-, nitrogen-, and oxygen-containing compounds, and color bodies, but essentially free of olefins, is contacted with a solid absorbent such as a NaX zeolite or zeolite MgY. After adsorption the adsorbent is desorbed with an alkyl- substituted aromatic desorbent, such as tuluene. The initial effluent from the adsorb cycle, which will contain a high concentration of residual desorbent, is recycled to a desorbent recovery system. The level of desorbent in the adsorber effluent is monitored on a real time basis until the desorbent level of the adsorber effluent declines from a plateau level, i.e., a 100% plateau level, that correlates with the level of impurities, particularly the aromatic impurities in the feed, which is an indication of aromatics breakthrough, thereby signaling the need to switch the adsorbent beds.Type: GrantFiled: October 23, 1990Date of Patent: April 28, 1992Assignee: Exxon Chemical Patents Inc.Inventors: Charles T. Dickson, Janet R. Fitzke, Christopher L. Becker
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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: 5057291Abstract: What is disclosed is a method of oxygen removal employing at least one solid bed of oxygen removal chemical; for example, Fe.sub.2 S.sub.3 on wood chips. Also disclosed are preferred embodiments in which are employed within the at least one bed a temperature sensor, a controller is connected with the temperature sensor and a gas operated control valve is connected with the controller such that the valve is operated to shut off the valve to the sales line if the temperature sensed is greater than a preset temperature; e.g. 150 degrees Fahrenheit.Type: GrantFiled: February 5, 1990Date of Patent: October 15, 1991Assignee: Vapor Compression, IncInventors: Edwin E. Fisher, Richard B. Brantley
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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: 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: 4814545Abstract: A process comprising removing alkyl-substituted aromatic compounds, alkyl compounds, or cycloalkyl compounds from an aromatic stream containing these compounds by contacting the aromatic stream with molecular oxygen in the presence of a zeolite.Type: GrantFiled: September 19, 1988Date of Patent: March 21, 1989Assignee: Eastman Kodak CompanyInventors: Mark Rule, Gerald C. Tustin, Regina M. Moncier, Joseph F. Jeter
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Patent number: 4734199Abstract: An improved liquid phase adsorption process is provided using a fixed bed system wherein the conventional post-regeneration bed-filling step and the post-adsorption bed-draining step are replaced by a displacement step. The bed volume of regeneration medium in a first bed of the system undergoing the final stage of regeneration cool-down is passed directly into a second bed of the system in the final stage of the adsorption step whereby the bed volume of void-space feedstock in said second bed is removed therefrom by displacement, thus effectively accomplishing in a single operation the filling step in the first bed and the draining step in the second bed.Type: GrantFiled: November 19, 1986Date of Patent: March 29, 1988Assignee: Union Carbide CorporationInventors: Moez M. Nagji, Olaf Nifontoff
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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: 4613724Abstract: The present invention relates to a process for removing carbonyl sulfide from a liquid olefinic hydrocarbon feedstock comprising (a) passing said hydrocarbon feedstock over an absorbent material comprising zinc oxide and a promoter selected from the group consisting of alumina, silico-aluminas and any combination thereof; and (b) recovering a liquid olefinic hydrocarbon stream having a substantially reduced carbonyl sulfide content.Type: GrantFiled: July 9, 1985Date of Patent: September 23, 1986Assignee: Labofina, S.A.Inventors: Guy L. G. Debras, Georges E. M. J. De Clippeleir, Raymond M. Cahen
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Patent number: 4547619Abstract: Method for removal of phenolic polymerization inhibitors from liquid conjugated olefin hydrocarbon by contacting said liquid hydrocarbon with a sorbent material comprising particulate acidified active carbon which sorbent has previously been oxidized by contact with a highly acidic oxidizing fluid. Optionally, after contact with the highly acidic oxidizing fluid the sorbent may be further treated in an alkaline environment with compounds of at least one of alkali metals, alkaline earth metals and ammonia. The sorbent material may be regenerated by heating, or by passing a heated non-oxidizing gas e.g., superheated stream there through.Type: GrantFiled: December 24, 1984Date of Patent: October 15, 1985Assignee: Shell Oil CompanyInventor: Zaida Diaz
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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: 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: 4409421Abstract: Pure tert.-olefins are prepared from mixtures of hydrocarbons, which contain at least one such tert.-olefin, by reaction with an alkanol to give the corresponding alkyl tert.-alkyl ethers, and subsequent cleavage of these ethers back to the corresponding pure tert.-olefins and the alkanol, and the separation of the pure tert.-olefin from the alkanol. For this, the alkanol present after the cleavage of the ether is separated from the tert.-olefin to the extent of 60 to 99% by weight by distillation, and the residual amount of alcohol in the olefin fraction is removed by adsorption from this fraction onto a synthetic ion exchanger as an absorber resin. The admixture of the alkanol to the mixture of hydrocarbons with at least one tert.-olefin is carried out partly by using the alkanol fraction arising from the separating off of the pure tert.-olefin, and partly by desorption of the alkanol from the absorber resin with the aid of the mixture of hydrocarbons containing at least 1 tert.-olefin.Type: GrantFiled: June 4, 1982Date of Patent: October 11, 1983Assignees: EC Erdolchemie GmbH, Bayer AktiengesellschaftInventors: Jens Herwig, Bruno Schulwitz, Bernhard Schleppinghoff, Hans-Volker Scheef, Peter M. Lange
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Patent number: 4387264Abstract: An improved process for the purification of diolefin monomers for anionic polymerization is disclosed. The purification process of this invention results in polymer which exhibits excellent chain growing.Type: GrantFiled: May 4, 1981Date of Patent: June 7, 1983Assignee: Atlantic Richfield CompanyInventor: Le-Khac Bi
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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: 4382001Abstract: An adsorptive separation process for separating ethanol from a feed mixture comprising ethanol and water, which process comprises contacting the feed mixture with an adsorbent comprising activated carbon, selectively adsorbing substantially all of the ethanol to be separated to the substantial exclusion of the water and thereafter recovering high purity ethanol. A desorption step is used to desorb the adsorbed ethanol with the desorbent selected being capable of direct blending into motor fuel.Type: GrantFiled: October 29, 1981Date of Patent: May 3, 1983Assignee: UOP Inc.Inventors: Santi Kulprathipanja, Richard W. Neuzil
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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