Using Metal Oxide Catalyst Patents (Class 585/640)
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Patent number: 8182780Abstract: In a method of synthesizing a silicoaluminophosphate molecular sieve having 90%+CHA framework type character, a reaction mixture is prepared comprising first combining a reactive source of aluminum with a reactive source of phosphorus to form a primary mixture that is aged. A reactive source of silicon and a template for directing the formation of the molecular sieve can then be added to form a synthesis mixture. Crystallization is then induced in the synthesis mixture. Advantageously, (i) the source of silicon comprises an organosilicate, (ii) the source of phosphorus optionally comprises an organophosphate, and (iii) the crystallized silicoaluminophosphate molecular sieve has a crystal size distribution such that its average crystal size is not greater than 5 ?m. The molecular sieve can then preferably be used in a hydrocarbon (oxygenates-to-olefins) conversion process.Type: GrantFiled: June 3, 2009Date of Patent: May 22, 2012Assignee: ExxonMobil Chemical Patents Inc.Inventors: Machteld M. Mertens, Stephen N. Vaughn, Guang Cao, Luc R. M. Martens, Mobae Afeworki
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Patent number: 8178060Abstract: Improved processing of an oxygenate-containing feedstock for increased production or yield of light olefins is provided. Such processing involves oxygenate conversion to olefins and subsequent cracking of heavier olefins wherein at least a portion of the C4+ hydrocarbon stream resulting from such oxygenate conversion processing and at least a portion of a cracked olefins effluent stream resulting from such olefin cracking processing are processed with a dividing wall fractionation column to form process streams containing: a) C3?hydrocarbons, b) C6+ hydrocarbons, and c) C4 and C5 hydrocarbons, including C4 and C5 olefins, respectively.Type: GrantFiled: August 13, 2010Date of Patent: May 15, 2012Assignee: UOP LLCInventors: Jason T. Corradi, Adam J. Kanyuh
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Patent number: 8178741Abstract: Disclosed herein is a method of recovery of the activity of a molecular sieve catalyst following use of the catalyst in an OTO conversion process. This is achieved by a regeneration apparatus and a method of regenerating a molecular sieve catalyst, comprising two stages. In a pretreatment stage, the catalyst is pretreated under pretreatment conditions by heating the catalyst to a temperature of between 320° C. to 700° C. in an oxygen depleted medium for a residence time of between 1 minute to two hours; and, in a regeneration stage, the catalyst is regenerated under regeneration conditions by heating the catalyst at a temperature of between 200° C. to 700° C. in an oxidizing medium for a residence time of between 1 to 60 minutes.Type: GrantFiled: June 3, 2010Date of Patent: May 15, 2012Assignee: ExxonMobil Chemical Patents Inc.Inventors: Chunshe J. Cao, James H. Beech, Jr., Michael P. Nicoletti, Thomas H. Colle, Teng Xu, Stephen N. Vaughn
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Patent number: 8163259Abstract: A molecular sieve comprises at least one intergrown phase of an AFX framework-type molecular sieve and a CHA framework-type molecular sieve and is conveniently synthesized using a combination of N,N,N?N?-tetramethylhexane-1,6-diamine and N,N-dimethylcyclohexylamine as organic directing agents.Type: GrantFiled: January 19, 2011Date of Patent: April 24, 2012Assignee: ExxonMobil Chemical Patents Inc.Inventors: Guang Cao, Matu J. Shah
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Patent number: 8163967Abstract: Improved processing of an oxygenate-containing feedstock involving increased or enhanced removal or recovery of carbonyls, particularly, acetaldehyde via either or both application of a more stringent stripping regime or addition of a sulfite-containing material.Type: GrantFiled: December 22, 2005Date of Patent: April 24, 2012Assignee: UOP LLCInventor: John J. Senetar
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Patent number: 8148589Abstract: Process for producing alkene(s) from a feedstock containing at least one monohydric aliphatic paraffinic primary (or secondary) alcohol(s), consisting of ethanol or propanol(s) or a mixture thereof. The process includes the steps of converting the monohydric aliphatic paraffinic primary (or secondary) alcohol(s) into the corresponding same carbon number alkene(s) in a reactive distillation column at elevated pressure and temperature so that the heads stream extracted from the top of the reactive distillation column comprises essentially the alkene(s), cooling the heads stream from the first step to a temperature sufficient to condense at least part of the alkene(s) with the highest boiling point, recycling at least part of the condensed alkene(s) from the second step back into the reactive distillation column, as a reflux return, and simultaneously recovering the remaining alkene(s).Type: GrantFiled: June 29, 2006Date of Patent: April 3, 2012Assignee: BP Chemicals LimitedInventors: Benjamin Patrick Gracey, Leslie William Bolton
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Patent number: 8148587Abstract: The present invention provides a method for producing Lower olefin from the feed of methanol or/and dimethyl ether, characterized in that methanol or/and dimethyl ether are divided proportionally to be fed at 3 reaction zones; and the desired distribution of the olefin product is obtained by modulating the feeding ratio among the 3 reaction zones and the reaction conditions in each reaction zone.Type: GrantFiled: July 27, 2007Date of Patent: April 3, 2012Assignee: Dalian Institute of Chemical Physics, Chinese Academy of SciencesInventors: Yue Qi, Zhongmin Liu, Zhihui Lv, Hua Wang, Changqing He, Lei Xu, Jinling Zhang, Xiangao Wang
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Publication number: 20120053384Abstract: A process to perform selective catalytic oxidation of four-carbon alcohols to produce four-carbon olefins with yields greater than 90%. The process includes providing a supply of oxygen gas and a butanol fuel, atomizing and evaporating the fuel to produce a vapor, mixing the vapor with the oxygen to form a fuel mixture, reacting the fuel mixture in the presence of a heated solid Rh/Al2O3 or Al2O3 catalysts.Type: ApplicationFiled: August 30, 2010Publication date: March 1, 2012Applicant: U.S. Government as represented by the Secretary of the ArmyInventors: IVAN C. LEE, DOUGLAS A. BEHRENS
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Publication number: 20120029211Abstract: A catalytic Wittig method utilizing a phosphine including the steps of providing a phosphine oxide precatalyst and reducing the phosphine oxide precatalyst to produce the phosphine; forming a phosphonium ylide precursor from the phosphine and a reactant; generating a phosphonium ylide from the phosphonium ylide precursor; reacting the phosphonium ylide precursor with the aldehyde, ketone, or ester to form the olefin and the phosphine oxide which then reenters the cycle. The invention is also directed to a Mitsunobu reaction catalytic in phosphine.Type: ApplicationFiled: April 6, 2010Publication date: February 2, 2012Inventor: Christopher J. O'Brien
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Patent number: 8083951Abstract: The invention provides a method for purifying MTO quench water and scrubbing water via mini-hydrocyclone separation, comprising: removing the entrapped catalyst particles from the MTO quench water via mini-hydrocyclone separation; cooling the quench water purified by mini-hydrocyclone separation so as to effect the recycling of water; removing the entrapped catalyst particles from the MTO quench water to be stripped via mini-hydrocyclone separation, so as to reduce the deposition of the catalyst particles within the stripping tower; removing the entrapped catalyst particles from the MTO scrubbing water via mini-hydrocyclone separation; and cooling the scrubbing water purified via mini-hydrocyclone separation so as to effect the recycling of water. The invention also provides an apparatus for purifying MTO quench water and scrubbing water via mini-hydrocyclone separation.Type: GrantFiled: April 21, 2009Date of Patent: December 27, 2011Assignees: East China University of Science and Technology, Luoyang Petrochemical Engineering Corporation (LPEC) SinopecInventors: Hualin Wang, Yanhong Zhang, Qiang Yang, Ji Ma, Zhishan Bai, Yu Liu, Longhu Liang, Lei Shi, Jie Zhang
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Patent number: 8080700Abstract: The invention relates to a method for forming olefins from an oxygenate-containing feedstock, comprising contacting the at least partially vaporized feed comprising oxygenates with a first catalyst upstream of an OTO reactor, the first catalyst consisting of a reactive guard bed of metal oxides comprising one or more metals from Groups 2, 3, and 4 of the Periodic Table and/or one or more metals in the Lanthanide and Actinide series, then contacting the feedstock in the OTO reactor with a second catalyst under conditions effective to form an effluent comprising the olefins.Type: GrantFiled: December 15, 2008Date of Patent: December 20, 2011Assignee: ExxonMobil Chemical Patents Inc.Inventors: Stephen N. Vaughn, Gary T. Schmidt, Teng Xu, Christopher E. Dilley
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Patent number: 8075696Abstract: This invention relates to a method for removing fouling from a heat transfer surface, such as a heat exchanger. The method involves conducting a vapor containing a scouring material to the heat transfer surface and contacting the scouring material with the foulant, the heat transfer surface, or both. Scouring material and removed foulant can be recovered and conducted away.Type: GrantFiled: June 13, 2007Date of Patent: December 13, 2011Assignee: ExxonMobil Chemical Patents Inc.Inventors: James H. Beech, Richard E. Walter
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Patent number: 8075642Abstract: Disclosed is a method for preparing liquid fuel and chemical intermediates from biomass-derived oxygenated hydrocarbons. The method includes the steps of reacting in a single reactor an aqueous solution of a biomass-derived, water-soluble oxygenated hydrocarbon reactant, in the presence of a catalyst comprising a metal selected from the group consisting of Cr, Mn, Fe, Co, Ni, Cu, Mo, Tc, Ru, Rh, Pd, Ag, W, Re, Os, Ir, Pt, and Au, at a temperature, and a pressure, and for a time sufficient to yield a self-separating, three-phase product stream comprising a vapor phase, an organic phase containing linear and/or cyclic mono-oxygenated hydrocarbons, and an aqueous phase.Type: GrantFiled: April 14, 2008Date of Patent: December 13, 2011Assignee: Wisconsin Alumni Research FoundationInventors: James A. Dumesic, Dante A. Simonetti, Edward L. Kunkes
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Patent number: 8071071Abstract: A method is disclosed of treating a porous crystalline molecular sieve having a pore size less than or equal to about 5 Angstroms to decrease its coke selectivity in oxygenate to olefin conversion reactions. The method comprises contacting the molecular sieve with an acid having a kinetic diameter greater than or equal to that of acetic acid.Type: GrantFiled: March 9, 2009Date of Patent: December 6, 2011Assignee: ExxonMobil Chemical Patents Inc.Inventors: Guang Cao, Gordon J. Kennedy, Matu J. Shah
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Patent number: 8058497Abstract: The present invention relates to processes for converting a mixed alcohol feedstock, including methanol and a higher alcohol, to olefins such as ethylene, propylene, and the like. In addition, the olefins produced by the oxygenate-to-olefin reaction system can then be used as monomers for a polymerization of olefin-containing polymers and/or oligomers.Type: GrantFiled: March 13, 2008Date of Patent: November 15, 2011Assignee: ExxonMobil Chemical Patents Inc.Inventor: Guang Cao
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Patent number: 8053619Abstract: Process for the production of alkenes from a feedstock comprising monohydric aliphatic paraffinic alcohols having from 2 to 3 carbon atoms, in which the monohydric aliphatic paraffinic alcohols containing 2 to 3 carbon atoms are dehydrated into the corresponding same carbon number alkenes at a pressure of more than 0.5 MPa but less than 4.0 MPa and at a temperature of less than 300° C. The alcohols present in the feedstock comprise ethanol, propanol(s), less than 1 wt % of methanol and less than 1 wt % of C3+ alcohols.Type: GrantFiled: June 29, 2006Date of Patent: November 8, 2011Assignee: BP Chemicals LimitedInventor: Benjamin Patrick Gracey
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Patent number: 8049054Abstract: Process for the preparation of C5 and/or C6 olefins from a lower olefin, which lower olefin comprises from 2 to 5 carbon atoms, and an oxygenate, which oxygenate comprises at least one oxygen-bonded alkyl group, comprising contacting the lower olefin with the oxygenate, in a molar ratio of oxygen-bonded alkyl group to lower olefin of at least 1:1 in the presence of a MTT-type zeolite.Type: GrantFiled: May 16, 2007Date of Patent: November 1, 2011Assignee: Shell Oil CompanyInventors: Leslie Andrew Chewter, Michiel Johannes Franciscus Maria Verhaak, Jeroen Van Westrenen
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Patent number: 8049053Abstract: In a method of synthesizing a silicoaluminophosphate molecular sieve, a synthesis mixture is prepared by combining a source of phosphorus and at least one organic directing agent; and then introducing a source of aluminum into the combination of the phosphorus source and organic directing agent, wherein the temperature of the combination is less than or equal to 50° C. when addition of the source of aluminum begins. After addition of a source of silicon, the synthesis mixture is heated to a crystallization temperature of between about 100° C. and about 300° C. and the molecular sieve is recovered.Type: GrantFiled: January 28, 2011Date of Patent: November 1, 2011Assignee: ExxonMobil Chemical Patents Inc.Inventors: Machteld M. Mertens, Brita Engels, Els Cecilia De Clerck
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Patent number: 8017824Abstract: This invention relates to hydrocarbon conversion processes using UZM-29 and UZM-29HS zeolitic compositions. The UZM-29 zeolites are represented by the empirical formula: Mmn+R+rAl1?xExSiyOz UZM-29 has the PHI structure type topology but is thermally stable up to a temperature of at least 350° C. UZM-29HS is a high silica version of UZM-29 and is represented by the empirical formula: M1?n+aAl(1?x)ExSiyOz. Examples of the hydrocarbon conversion processes are isomerization of alkanes, especially butane and the conversion of oxygenates to olefins.Type: GrantFiled: August 4, 2009Date of Patent: September 13, 2011Assignee: UOP LLCInventors: Susan C. Koster, Jaime G. Moscoso
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Patent number: 8003841Abstract: Processes and systems for utilizing products from DME synthesis in converting oxygenates to olefins are provided that include removing a DME-reactor effluent from a DME reactor, wherein the DME effluent includes DME, water, and methanol; separating carbon dioxide gas from the DME reactor effluent in a liquid gas separator to produce a degassed effluent stream. The processes and systems can include feeding the degassed effluent stream to an oxygenate to olefin reactor to produce an olefin containing effluent, wherein the olefin containing effluent further includes oxygenates.Type: GrantFiled: June 30, 2008Date of Patent: August 23, 2011Assignee: UOP LLCInventor: Andrea G. Bozzano
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Patent number: 7994377Abstract: For converting ethanol to a diesel fuel base stock: a reaction stage (a) of contacting the ethanol with an acid catalyst, amorphous or structured, predominantly mesoporous, at a temperature of 300° C. to 500° C., at a pressure of 2 to 10 MPa and at a WHSV of 0.2 to 4 h?1, producing a gas phase, an organic liquid phase and an aqueous liquid phase, and —a stage (b) of separating the gas phase, the organic liquid phase and the aqueous liquid phase at a pressure close to the reaction pressure, and recycling at least part of the gas phase separated in stage (b) to stage (a), and hydrogenating at least part of the organic liquid phase separated in stage (b).Type: GrantFiled: May 29, 2007Date of Patent: August 9, 2011Assignee: IFP Energies NouvellesInventors: Vincent Coupard, Sylvie Maury, Frédéric Capuano, Mohamed Bengrine
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Patent number: 7989669Abstract: This invention is directed to a process for producing one or more olefins from an oxygenate feed. According to the invention, an oxygenate stream is provided and a recycle stream is added to the oxygenate stream to form a feed stream to an oxygenate-to-olefin conversion system. The recycle stream comprises (i.e., contains) propane and dimethyl ether.Type: GrantFiled: February 20, 2008Date of Patent: August 2, 2011Assignee: ExxonMobil Chemical Patents Inc.Inventors: Gerald G. McGlamery, Jr., James H. Beech, Jr., Michael P. Nicoletti, Cornelis F. Van Egmond
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Patent number: 7977521Abstract: This invention, in one embodiment, is drawn to a process for forming olefin product by contacting an oxygenate with an olefin-forming catalyst under supercritical conditions to form an olefin product. This invention also relates to methods for activating molecular sieve catalyst, regenerating molecular sieve catalyst, and forming and/or disposing a co-catalyst within a molecular sieve catalyst, each under supercritical conditions.Type: GrantFiled: June 11, 2008Date of Patent: July 12, 2011Assignee: ExxonMobil Chemical Patents Inc.Inventors: Luc R. M. Martens, Stephen N. Vaughn, John R. Shutt
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Publication number: 20110166303Abstract: The present invention relates to a process to make light olefins, in a combined XTO-OC process, from an oxygen-containing, halogenide-containing or sulphur-containing organic feedstock comprising: a) providing a catalyst comprising zeolitic molecular sieves containing 10 member and larger channels in their microporous structure, b) providing an XTO reaction zone, an OC reaction zone and a catalyst regeneration zone, said catalyst circulating in the three zones, such that at least a portion of the regenerated catalyst is passed to the OC reaction zone, at least a portion of the catalyst in the OC reaction zone is passed to the XTO reaction zone and at least a portion of the catalyst in the XTO reaction zone is passed to the regeneration zone; c) contacting said oxygen-containing, halogenide-containing or sulphur-containing organic feedstock in the XTO reactor with the catalyst at conditions effective to convert at least a portion of the feedstock to form a XTO reactor effluent comprising light olefins and aType: ApplicationFiled: June 24, 2009Publication date: July 7, 2011Applicant: Total Petrochemicals Research FeluyInventors: Nikolai Nesterenko, Walter Vermeiren, Giacomo Grasso, Sander Van Donk, Wolfgang Garcia
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Patent number: 7973208Abstract: A catalyst for converting methanol to light olefins and the process for making and using the catalyst are disclosed and claimed. SAPO-34 is a specific catalyst that benefits from its preparation in accordance with this invention. A seed material is used in making the catalyst that has a higher content of the EL metal than is found in the principal part of the catalyst. The molecular sieve has predominantly a roughly rectangular parallelepiped morphology crystal structure with a lower fault density and a better selectivity for light olefins.Type: GrantFiled: April 28, 2009Date of Patent: July 5, 2011Assignee: UOP LLCInventors: Wharton Sinkler, Robert W. Broach, Natasha Erdman, Thomas M. Reynolds, John Q. Chen, Stephen T. Wilson, Paul T. Barger
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Patent number: 7968758Abstract: A process for the dissociation of methyl tert-butyl ether (MTBE), which includes at least a) catalytic dissociation of MTBE which is present in two streams I and VII over a catalyst to give a dissociation product II, b) separation by distillation of the dissociation product II obtained in a) into an overhead stream III containing more than 90% by mass and a bottom stream IV containing diisobutene, MTBE and more than 80% of the methanol present in the dissociation product II, c) separation by distillation of the bottom stream IV obtained in b) into a methanol-containing bottom stream V, a side stream VI containing diisobutene, methanol and MTBE and an overhead stream VII containing MTBE and methanol and d) recirculation of the overhead stream VII to a).Type: GrantFiled: June 5, 2007Date of Patent: June 28, 2011Assignee: Evonik Oxeno GmbHInventors: Markus Winterberg, Franz Nierlich, Silvia Santiago Fernandez, Walter Luh, Stephan Houbrechts, Dietrich Maschmeyer, Horst-Werner Zanthoff, Wilfried Büschken
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Publication number: 20110152596Abstract: A catalyst, useful in the preparation of isoolefins and containing 0.1 to 20% by mass of an alkali metal oxide, an alkaline earth metal oxide and mixtures thereof; 0.1 to 99% by mass of aluminum oxide; and 0.1 to 99% by mass of silicon dioxide, is prepared by a) treating an aluminosilicate with an aqueous alkali metal salt solution, an alkaline earth metal salt solution and mixtures thereof, under acidic conditions, to obtain a treated aluminosilicate; and b) calcining the treated aluminosilicate, to obtain the catalyst.Type: ApplicationFiled: February 25, 2011Publication date: June 23, 2011Applicant: OXENO OLEFINCHEMIE GMBHInventors: Horst-Werner ZANTHOFF, Dietrich Maschmeyer, Thomas Quandt, Franz Nierlich, Silvia Santiago Fernandez, Stephan Houbrechts, Georg Skillas, Kurt-Alfred Gaudschun
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Patent number: 7954254Abstract: The invention relates to a method and an apparatus for drying a product using a regenerative adsorbent, more in particular to such a method which can be carried out in an energy-saving manner. According to the invention, the product is dried by bringing it into contact with an adsorbent, water being taken up form the product by the adsorbent. Subsequently, the adsorbent is regenerated with superheated steam, steam being obtained, which steam comprises at least a part of the mentioned water.Type: GrantFiled: May 13, 2003Date of Patent: June 7, 2011Assignee: Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek TNOInventors: Paulus Josephus Theodorus Bussmann, Rudy Matthias Henricus Heijmans
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Patent number: 7947860Abstract: Processing schemes and arrangements for application of a dividing wall separation column in the processing of an effluent resulting from FCC processing modified for increased light olefin production. The dividing wall separation column desirably splits a naphtha feedstock produced or resulting from such modified FCC processing to produce or form a light fraction containing C5-C6 compounds, an intermediate fraction containing C7-C8 compounds and a heavy fraction containing C9+ compounds.Type: GrantFiled: September 28, 2006Date of Patent: May 24, 2011Assignee: UOP LLCInventors: Michael A. Schultz, Keith A. Couch
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Publication number: 20110112350Abstract: A molecular sieve comprises at least one intergrown phase of an AFX framework-type molecular sieve and a CHA framework-type molecular sieve and is conveniently synthesized using a combination of N,N,N?N?-tetramethylhexane-1,6-diamine and N,N-dimethylcyclohexylamine as organic directing agents.Type: ApplicationFiled: January 19, 2011Publication date: May 12, 2011Inventors: Guang Cao, Matu J. Shah
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Patent number: 7935857Abstract: A gas-solids reaction system is provided for improving product recovery in a multiple reactor reaction system. The solids of the product gas-solids flows from the multiple reactors are separated out in a separation vessel having a baffled transition zone. Additional product vapor is stripped from the solids as the solids pass through the baffled transition zone. The solids are then returned to the multiple reactors.Type: GrantFiled: February 14, 2007Date of Patent: May 3, 2011Assignee: ExxonMobil Chemical Patents Inc.Inventors: James H. Beech, Richard E. Walter, Arun K. Sharma, Jeffrey S. Smith
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Patent number: 7935650Abstract: The present invention provides a process for separating and disposing of catalyst in an oxygenate to olefins reaction system. Oxygenates are converted to olefins in a reactor in the presence of a catalyst having carbonaceous deposits, then effluent stream comprising the olefins is removed from the reactor. This effluent stream is entrained with a portion of the catalyst having carbonaceous deposits. The catalyst is separated from the effluent stream by contacting the effluent stream with a neutralized liquid quench medium to produce a catalyst containing stream. The carbonaceous deposits are incinerated and then the catalyst is recirculated to the reactor.Type: GrantFiled: December 18, 2006Date of Patent: May 3, 2011Assignee: UOP LLCInventors: Jason T. Corradi, Lawrence W. Miller
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Publication number: 20110098519Abstract: A catalyst composition for dehydration of an alcohol to prepare an alkene is provided. The catalyst composition comprises a catalyst and a modifying agent which is phosphoric acid, sulfuric acid or tungsten trioxide, or a derivative thereof. A process for preparing an alkene by dehydration of an alcohol is also provided. The process comprises mixing one or more alcohols and optionally water and the catalyst composition.Type: ApplicationFiled: August 12, 2008Publication date: April 28, 2011Inventors: Kanaparthi Ramesh, Armando Borgna
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Publication number: 20110092757Abstract: The present invention provides a zeolite-containing catalyst having excellent shape, fluidity and mechanical strength as a catalyst for a fluidized bed reaction. The present invention provides a zeolite-containing catalyst which is a particulate catalyst containing zeolite and silica, wherein the catalyst has an average particle diameter of 20 to 300 ?m and the ratio of the void area in the cross-section of the particle is 30% or less relative to the cross-section area of the particle.Type: ApplicationFiled: June 25, 2009Publication date: April 21, 2011Inventors: Kenji Akagishi, Hiroyuki Yano, Ryusuke Miyazaki
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Patent number: 7923591Abstract: Method and device for manufacturing at least one low olefin from an oxygenate-containing first reaction mixture (11) through conversion by a catalyst (20) to an olefin and paraffin-containing second reaction mixture (21) where the second reaction mixture (21) is flowed through a separation system (300), in which one at least one low olefin-containing first product stream (31) and at least one paraffin-enriched fraction (321) is extracted and where the remaining product stream (322) is at least partially recirculated to the catalyst (20).Type: GrantFiled: October 27, 2005Date of Patent: April 12, 2011Assignee: Lurgi AGInventors: Gerhard Birke, Harald Koempel, Waldemar Liebner, Hermann Bach
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Patent number: 7919662Abstract: Isobutene is prepared by dissociation of MTBE in the gas phase, by a) fractional distillation of an MTBE-containing stream comprising feed MTBE (I) and a recycle stream (VIII) to give an MTBE-containing overhead stream (II) and a bottom stream (III) having a boiling point higher than MTBE, b) catalytic dissociation of the overhead stream (II) obtained in step a) to give a dissociation product (IV), c) separation by distillation of the dissociation product (IV) obtained in step b) into an overhead stream (V) comprising more than 90% by mass of isobutene and a bottom stream (VI) comprising diisobutene, MTBE and more than 50% of the methanol present in the dissociation product (IV), d) fractional distillation of the bottom stream obtained in step c) under conditions under which the methanol is obtained as bottom product (VII) and more than 99% of the MTBE is obtained in the overhead product (VIII), and e) recirculation of the overhead product (VIII) to step a).Type: GrantFiled: August 14, 2007Date of Patent: April 5, 2011Assignee: Evonik Oxeno GmbHInventors: Markus Winterberg, Walter Luh, Silvia Santiago Fernandez, Franz Nierlich, Stephan Houbrechts, Dietrich Maschmeyer, Horst-Werner Zanthoff, Wilfried Büschken
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Patent number: 7919660Abstract: A method of converting methanol feedstock to olefins is provided and includes contacting the methanol feedstock in a first conversion zone with a catalyst at reaction conditions effective to produce a first reaction zone effluent comprising DME, unreacted methanol and water, and recycling at least a portion of an overhead vapor product to the first conversion zone and/or to the second conversion zone.Type: GrantFiled: December 21, 2007Date of Patent: April 5, 2011Assignee: UOP LLCInventors: Bipin V. Vora, Peter R. Pujado
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Patent number: 7915470Abstract: A coupled electrochemical system and method for its use is disclosed, where a polyol feed, especially a biomass polyol containing feed is reduced in a reducing solution including HI and a metal ion capable of converting I2 to HI during polyol reduction to hydrocarbon or iodohydrocarbon products and where the metal ions are capable of electrochemical reduction so that the system can be run on a batch, semi-continuous or continuous basis. The system is capable of producing hydrocarbon solvent, fuels and lubricating oils.Type: GrantFiled: September 8, 2006Date of Patent: March 29, 2011Assignee: Board of Regents, The University of Texas SystemInventor: J. Michael Robinson
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Patent number: 7910786Abstract: Isobutene is prepared by a process in which a) an MTBE-containing stream I is separated by distillation into an MTBE-containing overhead stream II and a bottom stream III which comprises compounds having boiling points higher than that of MTBE; and b) the MTBE present in the overhead stream II is dissociated over a catalyst to give a dissociation product IV; wherein the stream I has a proportion of 2-methoxybutane (MSBE) of greater than 1000 ppm by mass, based on MTBE, and wherein the separation by distillation in step a) and/or the dissociation in step b) is carried out so that the dissociation product IV has a concentration of less than 1000 ppm by mass of linear butenes, based on a C4-olefin fraction.Type: GrantFiled: August 16, 2007Date of Patent: March 22, 2011Assignee: Evonik Oxeno GmbHInventors: Markus Winterberg, Walter Luh, Silvia Santiago Fernandez, Franz Nierlich, Stephan Houbrechts, Dietrich Maschmeyer, Horst-Werner Zanthoff, Wilfried Büschken
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Patent number: 7906698Abstract: The present invention relates to new crystalline molecular sieve SSZ-75 prepared using a tetramethylene-1,4-bis-(N-methylpyrrolidinium) dication as a structure-directing agent, and its use in catalysts for hydrocarbon conversion reactions.Type: GrantFiled: January 14, 2010Date of Patent: March 15, 2011Assignee: Chevron U.S.A. Inc.Inventors: Stacey Zones, Allen Burton, Theodorus Ludovicus Michael Maesen, Berend Smit, Edith Beerdsen
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Patent number: 7906697Abstract: This invention relates to efficiently regenerating catalyst particles by minimizing the formation of localized “hot spots” and “cold spots” in a regeneration zone. Specifically this invention relates to a method for controlling regenerator temperature in an oxygenates-to-olefins system, comprising the steps of: contacting an oxygenate feed in a reactor with a catalytically effective amount of molecular sieve-containing catalyst under conditions effective for converting said oxygenate to a product containing light olefins and forming a coked catalyst; contacting a portion of the coked catalyst in a regenerator, having a catalyst bed height (Hc), an inlet height (Hi), and an outlet height (Ho), with an oxygen-containing regeneration medium under conditions effective to at least partially regenerate the coked catalyst; and conducting a portion of the catalyst from the regenerator to a catalyst cooler to form a cooled catalyst portion, wherein Ho is greater than Hi.Type: GrantFiled: March 31, 2008Date of Patent: March 15, 2011Assignee: ExxonMobil Chemical Patents Inc.Inventors: James H. Beech, Jr., Chunshe Cao, Michael P. Nicoletti, James R. Lattner, Jesse F. Goellner, Rutton D. Patel, Timothy M. Healy
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Patent number: 7901664Abstract: In a method of synthesizing an aluminophosphate or metalloaluminophosphate molecular sieve, a synthesis mixture is provided comprising water, a source of aluminum, a source of phosphorus, optionally a source of a metal other than aluminum, a tertiary amine, and an alkylating agent capable of reacting with said tertiary amine to form a quaternary ammonium compound capable of directing the synthesis of said molecular sieve. The synthesis mixture is maintained under conditions sufficient to cause the alkylating agent to react with the tertiary amine to produce the quaternary ammonium compound and to induce crystallization of the molecular sieve.Type: GrantFiled: March 31, 2008Date of Patent: March 8, 2011Assignee: ExxonMobil Chemical Patents Inc.Inventors: Guang Cao, Mobae Afeworki, Matu J. Shah, Machteld Maria Mertens
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Patent number: 7897827Abstract: Processes and systems are disclosed that relate to the removal of impurities and separation the light olefins from an MTO product vapor stream. Specifically, the processes and systems relate to recovery of light olefins during regeneration of an adsorber in an oxygenate removal unit. Processes and systems for recovering light olefins during regeneration of an adsorber in an oxygenate removal unit can include recycling residual effluent stream to an upstream operation unit upstream of the oxygenate removal unit. Processes and systems for recovering light olefins during regeneration of an adsorber in an oxygenate removal unit can also include recycling residual effluent gas produced by depressurizing residual effluent in the first adsorber, as well as preferably venting an effluent gas from the first adsorber to a compressor upstream of the oxygenate removal unit.Type: GrantFiled: December 11, 2007Date of Patent: March 1, 2011Assignee: UOP LLCInventor: Jason T. Corradi
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Publication number: 20110044891Abstract: A process for manufacturing a synthetic porous crystalline molecular sieve requires an aqueous reaction mixture comprising a source of X2O3 (X is a trivalent element), a source of YO2 (Y is a tetravalent element) and a source of MOH (M is an alkali metal). The H2O/MOH molar ratio is within the range of 70 to 126 and the source of X2O3 and YO2 is an amorphous material containing both X2O3 and YO2 and having YO2/X2O3 molar ratio of 15 or less. The molecular sieve products are useful as catalysts and/or absorbents. Such molecular sieves having MFI structure type, TON structure type or the structure type of zeolite beta and a composition involving the molar relationship (n) YO2:X2O3 wherein n is from 2 to less than 15 are novel compositions of matter.Type: ApplicationFiled: January 19, 2009Publication date: February 24, 2011Inventors: Wieslaw Jerzy Roth, Mae Koenig Rubin
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Patent number: 7893310Abstract: This invention is to a process for separating condensed water and entrained solids from an olefin stream so that fouling of the separation equipment by the entrained solids is reduced or eliminated. The process involves injecting an antifouling agent into a water condensing or quench system in an amount to maintain a zeta potential of fouling liquid and a zeta potential of the surface of the quench system both in a positive range or both in a negative range.Type: GrantFiled: January 31, 2008Date of Patent: February 22, 2011Assignee: ExxonMobil Chemical Patents Inc.Inventors: Gerald G. McGlamery, Jr., Michael P. Nicoletti, Thomas H. Colle
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Publication number: 20110034750Abstract: A process for the production of C3-C6 light olefins from ethanol is described, and said process comprises at least the passage of a feedstock that contains ethanol into at least one reaction unit that is provided with at least one catalyst that comes in the form of spherical balls with a diameter of between 1 and 3 mm, each of said spherical balls comprising at least one zeolite and at least one alumina-based substrate and having a pore distribution such that the macropore volume that is measured by mercury porosimetry is between 0.10 and 0.20 ml/g and the mesopore volume that is measured by mercury porosimetry is between 0.25 and 0.35 ml/g.Type: ApplicationFiled: August 6, 2010Publication date: February 10, 2011Applicant: IFP ENERGIES NOUVELLESInventors: Vincent Coupard, Emmanuelle Guillon, Sylvie Maury, Nicolas Cadran
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Patent number: 7879749Abstract: Catalytic structures include a catalytic material disposed within a zeolite material. The catalytic material may be capable of catalyzing a formation of methanol from carbon monoxide and/or carbon dioxide, and the zeolite material may be capable of catalyzing a formation of hydrocarbon molecules from methanol. The catalytic material may include copper and zinc oxide. The zeolite material may include a first plurality of pores substantially defined by a crystal structure of the zeolite material and a second plurality of pores dispersed throughout the zeolite material. Systems for synthesizing hydrocarbon molecules also include catalytic structures. Methods for synthesizing hydrocarbon molecules include contacting hydrogen and at least one of carbon monoxide and carbon dioxide with such catalytic structures.Type: GrantFiled: August 15, 2006Date of Patent: February 1, 2011Assignee: Battelle Energy Alliance, LLCInventors: Harry W. Rollins, Lucia M. Petkovic, Daniel M. Ginosar
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Patent number: 7879920Abstract: This invention is directed to methods for forming an olefin stream from a methanol stream. A lower grade methanol, such as chemical grade or crude methanol, can be used as feed to form the olefin stream. The process uses a relatively simple distillation type step to vaporize a portion of the methanol feed stream and send the resulting vapor stream to a reaction unit to form the olefin stream. In addition, the invention provides the ability to operate the downstream recovery units with reduced fouling or plugging due to the presence of fine solids components.Type: GrantFiled: April 1, 2005Date of Patent: February 1, 2011Assignee: ExxonMobil Chemical Patents Inc.Inventors: James R. Lattner, Christopher Becker, Cor F. Van Egmond, Andrew M. Argo
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Publication number: 20110021857Abstract: Disclosed herein is a method of recovery of the activity of a molecular sieve catalyst following use of the catalyst in an OTO conversion process. This is achieved by a regeneration apparatus and a method of regenerating a molecular sieve catalyst, comprising two stages. In a pretreatment stage, the catalyst is pretreated under pretreatment conditions by heating the catalyst to a temperature of between 320° C. to 700° C. in an oxygen depleted medium for a residence time of between 1 minute to two hours; and, in a regeneration stage, the catalyst is regenerated under regeneration conditions by heating the catalyst at a temperature of between 200° C. to 700° C. in an oxidizing medium for a residence time of between 1 to 60 minutes.Type: ApplicationFiled: June 3, 2010Publication date: January 27, 2011Inventors: Chunshe J. Cao, James H. Beech, JR., Michael P. Nicoletti, Thomas H. Colle, Teng Xu, Stephen N. Vaughn
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Publication number: 20110015454Abstract: A biocomponent feedstock can be hydroprocessed using an FCC off-gas as a hydrogen source. A relatively low cost catalyst, such as a water gas shift catalyst and/or spent hydrotreating catalyst, can be used as a hydrogenation catalyst for the process. The hydroprocessing can allow for olefin saturation and/or deoxygenation of the biocomponent feed by using a relatively low value refinery stream.Type: ApplicationFiled: July 15, 2010Publication date: January 20, 2011Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANYInventor: Patrick L. Hanks