With Recovery Or Reactivation Of Catalyst Patents (Class 208/140)
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Patent number: 11975316Abstract: Methods and systems for re-dispersing platinum on catalysts used in continuous catalyst regeneration reformer systems are disclosed. Some aspects of the disclosure provide, for example, methods of evaluating the platinum re-dispersion of a reforming catalyst in a small-scale reactor for use in a continuous catalyst regeneration reformer system and methods of improving the activity and selectivity of reforming catalysts for use in a continuous catalyst regeneration reformer system by selection of appropriate reaction parameters in a small-scale reactor for use in a continuous catalyst regeneration reformer system.Type: GrantFiled: May 7, 2020Date of Patent: May 7, 2024Assignee: MARATHON PETROLEUM COMPANY LPInventors: David J. Zalewski, Vidya Dharmagadda
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Patent number: 10799858Abstract: A process is presented for the treatment of spent catalyst to manage sulfur-containing compounds on the catalyst. The catalyst may be a dehydrogenation catalyst, where sulfur accumulates during a dehydrogenation process. Sulfur compounds are stripped from the spent catalyst and the catalyst may be cooled before a regeneration step. The process includes controlling removal of sulfur compounds from the spent catalyst before regeneration.Type: GrantFiled: March 9, 2018Date of Patent: October 13, 2020Assignee: UOP LLCInventors: Wolfgang A. Spieker, Gregory J. Gajda, J. W. Adriaan Sachtler, Kristoffer E. Popp
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Patent number: 10309278Abstract: Described herein is a desulfurization method for desulfurizing a SCR device treating an exhaust gas. The desulfurization method includes injecting a reductant into the exhaust gas upstream from or into the SCR device and increasing a temperature of the exhaust gas.Type: GrantFiled: October 3, 2017Date of Patent: June 4, 2019Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Rahul Mital, Gongshin Qi, Anil Yadav
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Patent number: 10307740Abstract: Methods for regenerating a spent catalyst are disclosed. Such methods may employ a step of chlorinating the spent catalyst in the gas phase, followed by decoking the chlorinated spent catalyst, and then fluorinating the de-coked catalyst in a fluorine-containing solution of a fluorine-containing compound.Type: GrantFiled: May 17, 2017Date of Patent: June 4, 2019Assignee: Chevron Phillips Chemical Company LPInventors: Ryan W. Snell, Gabriela D. Alvez-Manoli
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Patent number: 10300476Abstract: Methods for regenerating a spent catalyst in a metal reactor are disclosed. Such methods may employ a step of chlorinating the spent catalyst, followed by decoking the chlorinated spent catalyst, and then fluorinating the de-coked catalyst.Type: GrantFiled: May 17, 2017Date of Patent: May 28, 2019Assignee: Chevron Phillips Chemical Company LPInventor: Gabriela D. Alvez-Manoli
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Patent number: 10144680Abstract: Disclosed is a process for producing light olefins. In the process for producing light olefins by continuously bringing an alkane feedstock and a catalyst into contact to subject to a dehydrogenation reaction, the reaction pressure P of the dehydrogenation reaction is made 0.6-2 MPa and the volume space velocity H of the dehydrogenation reaction is made 500-1000 h?1. The light olefins production process of the present invention is simple and continuous in operation and has the characteristics of low investment, significant increase in yield of light olefins and high safety.Type: GrantFiled: October 20, 2015Date of Patent: December 4, 2018Assignees: CHINA PETROLEUM & CHEMICAL CORPORATION, RESEARCH INSTITUTE OF PETROLEUM PROCESSING, SINOPECInventors: Xin Wang, Jingchuan Yu, Minggang Li, Jianhong Gong, Baoning Zong, Youhao Xu
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Patent number: 10022692Abstract: A Fischer-Tropsch catalyst activation system including separation apparatus configured for separating a product gas comprising primarily hydrogen from a gas stream comprising hydrogen, an activation reactor fluidly connected with the separation apparatus via an activation gas inlet line whereby the product gas may be introduced into the activation reactor, and a circulation loop fluidly connecting a gas outlet of the activation reactor with the activation gas inlet line or with another gas inlet of the activation reactor and fluidly connecting the activation reactor with one or more apparatus configured for removal of H2O. A method of activating a Fischer-Tropsch catalyst is also provided.Type: GrantFiled: May 7, 2015Date of Patent: July 17, 2018Assignee: SGCE LLCInventor: Juan R. Inga
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Patent number: 9868111Abstract: A process of forming a direct NOx catalyst includes the steps of providing a palladium salt, providing a silicon oxide support material, mixing the palladium salt and silicon oxide support material in an aqueous solution, evaporating the aqueous solution forming a solid, calcining the solid, and then exposing the calcined solid to a pretreatment gas at a specified temperature to form a desired direct NOx catalyst. When the process includes exposing the calcined solid to helium gas at a temperature of from 650 to 1000° C. the catalyst may include a mixture of palladium and palladium oxide having a particle size of from 5 to 150 nm where the palladium particles are discrete particles without sintering and the mixture may include 41% by weight palladium oxide and 51% by weight palladium metal.Type: GrantFiled: February 27, 2016Date of Patent: January 16, 2018Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.Inventors: Krishna Reddy Gunugunuri, Torin C. Peck, Chen Ling, Hongfei Jia
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Patent number: 9751823Abstract: Processes are described for making methacrylic acid via methacrolein from a biobased isobutene, wherein the biobased isobutene is prepared from ethanol or from acetic acid in the presence of a ZnxZryOz mixed oxide catalyst, the biobased isobutene is oxidized to methacrolein and the methacrolein is further oxidized to methacrylic acid.Type: GrantFiled: June 16, 2016Date of Patent: September 5, 2017Assignees: Archer Daniels midland Co., Washington state UniversityInventors: Junming Sun, Changjun Liu, Yong Wang, Kevin Martin, Padmesh Venkitasubramanian
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Patent number: 9731287Abstract: Apparatuses and methods are provided for regenerating catalyst particles. In one embodiment, a method for regenerating catalyst particles includes passing the catalyst particles through a halogenation zone and a drying zone. The method feeds drying gas to the drying zone and passes a first portion of the drying gas from the drying zone to the halogenation zone. The method includes removing a second portion of the drying gas from the drying zone and injecting a halogen gas into the second portion of the drying gas. Further, the method includes delivering the halogen gas and the second portion of the drying gas to the halogenation zone. In the method, substantially all of the drying gas fed to the drying zone enters the halogenation zone.Type: GrantFiled: August 27, 2014Date of Patent: August 15, 2017Assignee: UOP LLCInventors: Ka Lok, Jennifer J Ozmen, William Yanez, Mary Wier, Richard Gaicki
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Patent number: 9403749Abstract: Processes are described for making methacrylic acid via methacrolein from a biobased isobutene, wherein the biobased isobutene is prepared from ethanol or from acetic acid in the presence of a ZnxZryOz mixed oxide catalyst, the biobased isobutene is oxidized to methacrolein and the methacrolein is further oxidized to methacrylic acid.Type: GrantFiled: April 10, 2015Date of Patent: August 2, 2016Inventors: Junming Sun, Changjun Liu, Yong Wang, Kevin Martin, Padmesh Venkitasubramanian
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Patent number: 9309466Abstract: A method to upgrade oil wherein an oil containing material is heated with a catalyst in a turbulent environment of less than about 1 volume percent oxygen to produce a vapor phase comprising an upgraded oil. Also disclosed is a thermal desorption process in which an oil contaminated substrate is contacted with an acidic reagent to form a peptizate, and the peptizate is mixed with a combustion effluent gas under turbulent conditions at a temperature above 200° C. to form the catalyst for the oil upgrading method.Type: GrantFiled: May 13, 2015Date of Patent: April 12, 2016Assignee: Racional Energy & Environmental CompanyInventor: Ramon Perez-Cordova
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Patent number: 9150971Abstract: An aerobic method for oxidizing an alkane is disclosed herein. At least a portion of a surface of a platinum working electrode is activated at an interface between the platinum working electrode and an ionic liquid electrolyte (i.e., 1-ethyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide, 1-propyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide, 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide, 1-pentyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide, 1-hexyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide, 1-heptyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide, 1-octyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide, 1-nonyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide, and 1-decyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imidem, and combinations thereof). An interface complex is formed at the interface. An alkane gas is supplied to the interface. The alkane adsorbs at or near the interface complex.Type: GrantFiled: August 28, 2012Date of Patent: October 6, 2015Assignee: Oakland UniversityInventors: Xiangqun Zeng, Zhe Wang
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Patent number: 8912110Abstract: One embodiment is a catalyst for catalytic reforming of naphtha. The catalyst can have a noble metal including one or more of platinum, palladium, rhodium, ruthenium, osmium, and iridium, an alkali or alkaline-earth metal, a lanthanide-series metal, and a support. Generally, an average bulk density of the catalyst is about 0.300 to about 1.00 gram per cubic centimeter. The catalyst has a platinum content of less than about 0.375 wt %, a tin content of about 0.1 to about 2 wt %, a potassium content of about 100 to about 600 wppm, and a cerium content of about 0.1 to about 1 wt %. The lanthanide-series metal can be distributed at a concentration of the lanthanide-series metal in a 100 micron surface layer of the catalyst less than two times a concentration of the lanthanide-series metal at a central core of the catalyst.Type: GrantFiled: July 12, 2012Date of Patent: December 16, 2014Assignee: UOP LLCInventors: Manuela Serban, Mark P. Lapinski
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Patent number: 8882992Abstract: The present invention relates to a multistage reforming process to produce a high octane product. A naphtha boiling range feedstock is processed in a multi-stage reforming process, in which the process involves at least 1) a penultimate stage for reforming the naphtha feedstock to produce a penultimate effluent 2) a final stage for further reforming at least a portion of the penultimate effluent 3) a regeneration step for the final stage catalyst. The severity of the penultimate stage can be increased during final stage catalyst regeneration in order to maintain the target RON of the reformate product and avoid reactor downtime.Type: GrantFiled: November 19, 2013Date of Patent: November 11, 2014Assignee: Chevron U.S.A. Inc.Inventors: Cong-Yan Chen, Stephen J. Miller, James N. Ziemer
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Patent number: 8865608Abstract: Systems and processes for regenerating catalyst are provided herein that include a catalyst regeneration tower having a cooling zone that receives a catalyst cooling stream generated by a cooling gas loop. The systems and processes include a first thermocompressor that utilizes a first motive vapor and a second thermocompressor that utilizes a second motive vapor in order to provide the catalyst cooling stream to the regeneration tower. The second thermocompressor operates in parallel with the first thermocompressor. The first thermocompressor can utilize combustion air as the motive vapor. The second thermocompressor can utilize nitrogen as the motive vapor.Type: GrantFiled: February 27, 2009Date of Patent: October 21, 2014Assignee: UOP LLCInventors: Brian Nabozny, William D. Schlueter, Kate Tuson
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Patent number: 8758599Abstract: One exemplary embodiment can be a catalyst for catalytic reforming of naphtha. The catalyst can have a noble metal including one or more of platinum, palladium, rhodium, ruthenium, osmium, and iridium, a lanthanide-series metal including one or more elements of atomic numbers 57-71 of the periodic table, and a support. Generally, an average bulk density of the catalyst is about 0.300-about 0.620 gram per cubic centimeter, and an atomic ratio of the lanthanide-series metal:noble metal is less than about 1.3:1. Moreover, the lanthanide-series metal can be distributed at a concentration of the lanthanide-series metal in a 100 micron surface layer of the catalyst less than about two times a concentration of the lanthanide-series metal at a central core of the catalyst.Type: GrantFiled: July 15, 2011Date of Patent: June 24, 2014Assignee: UOP LLCInventors: Mark Paul Lapinski, Paul Barger
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Patent number: 8658021Abstract: The present invention relates to a multistage reforming process to produce a high octane product. A naphtha boiling range feedstock is processed in a multi-stage reforming process, in which the process involves at least 1) a penultimate stage for reforming the naphtha feedstock to produce a penultimate effluent 2) a final stage for further reforming at least a portion of the penultimate effluent 3) a regeneration step for the final stage catalyst. The severity of the penultimate stage can be increased during final stage catalyst regeneration in order to maintain the target RON of the reformate product and avoid reactor downtime.Type: GrantFiled: July 28, 2010Date of Patent: February 25, 2014Assignee: Chevron U.S.A. Inc.Inventors: Cong-Yan Chen, Stephen J. Miller, James N. Ziemer, Ann J. Liang
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Patent number: 8604262Abstract: A process for reforming a hydrocarbon stream is presented. The process involves splitting a naphtha feedstream to at least two feedstreams and passing each feedstream to separation reformers. The reformers are operated under different conditions to utilize the differences in the reaction properties of the different hydrocarbon components. The process utilizes a common catalyst, and common downstream processes for recovering the desired aromatic compounds generated.Type: GrantFiled: March 9, 2012Date of Patent: December 10, 2013Assignee: UOP LLCInventors: David A. Wegerer, Kurt M. Vanden Bussche, Mark D. Moser
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Patent number: 8404105Abstract: One exemplary embodiment can be a process for facilitating a transfer of a metal catalyst component from at least one donor particle to at least one recipient particle in a catalytic naphtha reforming unit. The process can include transferring an effective amount of the metal catalyst component from the at least one donor particle to the at least one recipient particle under conditions to effect such transfer to improve a conversion of a hydrocarbon feed.Type: GrantFiled: February 11, 2011Date of Patent: March 26, 2013Assignee: UOP LLCInventors: Mark P. Lapinski, Gregory J. Gajda, Jeffry T. Donner, Richard R. Rosin, Marc R. Scheier, Simon R. Bare
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Patent number: 8216522Abstract: Catalyst regeneration vessels including a chlorination zone that includes an outer mixing chamber, an inner mixing chamber, and a catalyst bed. The outer mixing chamber can include a lower portion and an upper portion, the lower portion of the outer mixing chamber including at least one air nozzle that injects a drying air stream into the outer mixing chamber, at least one chlorine input nozzle that injects a chlorine input stream into the outer mixing chamber, and at least a first baffle. The chlorination zone can also contain a second baffle that directs the mixed drying air stream and chlorine input stream from the outer mixing chamber to the inner mixing chamber.Type: GrantFiled: June 14, 2011Date of Patent: July 10, 2012Assignee: UOP LLCInventors: Bing Sun, Paul A. Sechrist
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Patent number: 8173567Abstract: Disclosed is a catalyst distributor and process for spreading catalyst over a regenerator vessel. Nozzles disposed angular to a header of the distributor spread catalyst throughout a full cross section of the catalyst bed.Type: GrantFiled: December 16, 2008Date of Patent: May 8, 2012Assignee: UOP LLCInventors: Paolo Palmas, Lawrence A. Lacijan, Sujay R. Krishnamurthy, Mohammad-Reza Mostofi-Ashtiani, Paul S. Nishimura, Lisa M. Wolschlag
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Patent number: 7985381Abstract: Catalyst regeneration vessels including a chlorination zone that includes an outer mixing chamber, an inner mixing chamber, and a catalyst bed. The outer mixing chamber can include a lower portion and an upper portion, the lower portion of the outer mixing chamber including at least one air nozzle that injects a drying air stream into the outer mixing chamber, at least one chlorine input nozzle that injects a chlorine input stream into the outer mixing chamber, and at least a first baffle. The chlorination zone can also contain a second baffle that directs the mixed drying air stream and chlorine input stream from the outer mixing chamber to the inner mixing chamber.Type: GrantFiled: February 6, 2009Date of Patent: July 26, 2011Assignee: UOP LLCInventors: Bing Sun, Paul Alvin Sechrist
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Patent number: 7947166Abstract: The present invention relates to a method for treating a feed corresponding to a pyrolysis gasoline, comprising: a) at least one stage of selective hydrogenation of the feed, referred to as HD1, b) fractionating in one or more distillation columns the effluent from stage a) in order to produce at least one light C5 cut, an intermediate C6 or C6-C7 or C6-C8 cut intended for aromatics production, a heavy C7+ or C8+ or C9+ cut intended for gasoline production, c) at least one stage of hydrodesulfurization and deep hydrogenation of the intermediate cut, referred to as HD2, d) at least one stage of alkylation of the heavy C7+, C8+ or C9+ cut consisting of a treatment on an acid catalyst allowing weighting of the sulfur compounds, e) at least one stage of distillation of the effluent from stage d), intended to produce a light fraction that can be directly used as a low-sulfur gasoline base, and a heavy C11+ or C12+ fraction rich in sulfur compounds, used as middle distillate or fuel oil.Type: GrantFiled: March 13, 2008Date of Patent: May 24, 2011Assignee: IFP Energies NouvellesInventors: Florent Picard, Quentin Debuisschert, Annick Pucci
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Patent number: 7909988Abstract: One exemplary embodiment can be a process for facilitating a transfer of a metal catalyst component from at least one donor particle to at least one recipient particle in a catalytic naphtha reforming unit. The process can include transferring an effective amount of the metal catalyst component from the at least one donor particle to the at least one recipient particle under conditions to effect such transfer to improve a conversion of a hydrocarbon feed.Type: GrantFiled: April 17, 2008Date of Patent: March 22, 2011Assignee: UOP LLCInventors: Mark P. Lapinski, Gregory J. Gajda, Jeffry T. Donner, Richard R. Rosin, Marc R. Schreier, Simon R. Bare
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Patent number: 7585803Abstract: A method of operating a continuous system for a catalyst regeneration process wherein the regeneration section includes a combustion zone, at least one oxygen boost zone, a halogenation zone and a drying zone in serial progression.Type: GrantFiled: October 19, 2005Date of Patent: September 8, 2009Assignee: UOP LLCInventors: Scott J. Price, Paul R. Cottrell
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Patent number: 7223710Abstract: A process in which halogen is recovered from a cyclic operation for regenerating hydrocarbon conversion catalysts is disclosed. The process uses an arrangement of beds of adsorbent and a circulating stream to return the halogen-containing materials to a regeneration circuit.Type: GrantFiled: July 22, 2003Date of Patent: May 29, 2007Assignee: UOP LLCInventor: Paul A. Sechrist
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Patent number: 6790802Abstract: A method of recovering halogen-containing materials from the cyclic catalyst regeneration operation of a catalytic hydrocarbon conversion process is disclosed. The method uses an arrangement of beds of adsorbent to return the halogen-containing materials to a circulating regeneration circuit.Type: GrantFiled: November 5, 2001Date of Patent: September 14, 2004Assignee: UOP LLCInventor: Paul A. Sechrist
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Patent number: 6784132Abstract: A method of recovering halogen-containing materials from the cyclic catalyst regeneration operation of a catalytic hydrocarbon conversion process is disclosed. The method uses an arrangement of beds of adsorbent to maintain the halogen-containing materials within a circulating regeneration circuit.Type: GrantFiled: November 5, 2001Date of Patent: August 31, 2004Assignee: UOP LLCInventor: Paul A. Sechrist
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Patent number: 6616900Abstract: An FCC process provides ultrashort catalyst and feed contacting in an FCC riser by recovering a short contact product stream in an intermediate section of the riser. The remainder of the catalyst and gas mixture continues through the riser along a continuous flow path for further controlled cracking of the heavier adsorbed hydrocarbons and entrained hydrocarbons. Residual catalyst separated from the recovery of the short contact product stream returns to the upstream end of the riser for recycle. The section of the riser downstream of the short contact product recovery may receive additional feed to perform secondary cracking reactions. The riser arrangement greatly simplifies methods for performing ultrashort FCC feed and catalyst contacting.Type: GrantFiled: October 15, 1999Date of Patent: September 9, 2003Assignee: UOP LLCInventor: David A. Lomas
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Patent number: 6610196Abstract: A substantially water-free hydrocarbon feed is charged to a reformer reactor operated under reforming conditions; thereafter, a chlorine-containing additive is introduced, without the simultaneous introduction of water, into the substantially water-free hydrocarbon feed being charged to the reformer reactor in an amount and for a time period that are effective to inhibit deactivation of the reformer catalyst; thereafter, the introduction of the chlorine-containing additive is terminated and the charging of the substantially water-free hydrocarbon feed to the reformer reactor is continued.Type: GrantFiled: September 22, 2000Date of Patent: August 26, 2003Assignee: ConocoPhillips CompanyInventors: Fan-Nan Lin, John S. Parsons
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Patent number: 6593264Abstract: A reforming catalyst containing a Group VIII metal, or a Group VII B metal, or tin, or germanium, or copper, or selenium or combinations of any two or more metals or oxides thereof is activated by: a) continuously flowing a reducing gas over the catalyst for contact with the catalyst; (b) during step a), flowing a halogen-containing compound over the catalyst for contact with the catalyst for a first time period, wherein the first time period is greater than about 1 minute, and wherein the first time period is less than about 60 minutes; and (c) following step b), and during step a), substantially discontinuing the flow of the halogen-containing compound over the catalyst for a second time period, wherein the second time period is greater than about 1 minute.Type: GrantFiled: June 20, 2002Date of Patent: July 15, 2003Assignee: ConocoPhillips CompanyInventors: Fan-Nan Lin, John S. Parsons, Donald H. Macahan, Brian H. Limoges
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Patent number: 6558532Abstract: While a substantially water-free hydrocarbon feed is being charged to a catalytic reformer reactor, an organic chloride is contacted with the reformer catalyst in an amount and for a time period that are effective to restore at least a portion of the activity of the reformer catalyst.Type: GrantFiled: September 22, 2000Date of Patent: May 6, 2003Assignee: Phillips Petroleum CompanyInventors: Fan-Nan Lin, John S. Parsons
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Patent number: 6478952Abstract: Deactivation of a reformer catalyst is inhibited by charging a hydrocarbon feed having a concentration of an organic aluminum halide compound to a reformer reactor operating under reforming conditions and containing a reformer catalyst.Type: GrantFiled: July 19, 2000Date of Patent: November 12, 2002Assignee: Phillips Petroleum CompanyInventor: Fan-Nan Lin
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Patent number: 6472340Abstract: Catalyst activation of a platinum reforming catalyst system contained in a multiple reactor system by simultaneously reducing the catalyst with hydrogen while introducing a nonmetallic chlorine-containing compound into a reactor of the multiple reactor system in an amount to add from about 0.05 to about 0.3 weight percent chlorine to the catalyst and thereafter purging the system with about 100 to about 50,000 cubic feet of hydrogen per cubic foot of catalyst resulting in a reforming system having increased activity and providing enhanced RON values with reduced cracking of feedstock.Type: GrantFiled: July 31, 2001Date of Patent: October 29, 2002Assignee: Phillips Petroleum CompanyInventor: Fan-Nan Lin
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Patent number: 6458266Abstract: A substantially water-free hydrocarbon feed is charged to a multiple-reactor reformer system being operated under reforming conditions and comprising at least two reformer reactors serially connected in fluid-flow communication and each containing a reformer catalyst; and, simultaneously with the charging step, a chloriding agent is sequentially introduced, without simultaneously introducing water, immediately upstream from the inlets of all the reformer reactors in an amount and for a period of time that are effective to inhibit the deactivation of the reformer catalyst.Type: GrantFiled: September 22, 2000Date of Patent: October 1, 2002Assignee: Phillips Petroleum CompanyInventors: Fan-Nan Lin, John S. Parsons
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Publication number: 20020100712Abstract: Catalyst activation of a platinum reforming catalyst system contained in a multiple reactor system by simultaneously reducing the catalyst with a sustained hydrogen flow through the multiple reactor system while introducing a nonmetallic chlorine-containing compound serially into each reactor of the multiple reactor system in an amount to provide from about 0.05 to about 0.3 weight percent chlorine on the catalyst and thereafter purging the system with about 100 to about 50,000 cubic feet of hydrogen per cubic foot of catalyst prior to commencing use of the treated catalyst system for reforming hydrocarbon feed.Type: ApplicationFiled: July 31, 2001Publication date: August 1, 2002Applicant: Phillips Petroleum CompanyInventors: Donald H. Macahan, Fan-Nan Lin
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Patent number: 6348144Abstract: A method for regenerating a hydrocarbon conversion catalyst wherein at least a portion of a halogen-containing compound is precombusted in a precombustion zone, and the catalyst is regenerated in the presence of the halogen. By precombusting the halogen-containing compound in a precombustion zone rather than in the regeneration zone, this invention decreases the risk of permanent catalyst deactivation and of costly equipment damage in the regeneration zone. This method is adaptable to many processes for the catalyst conversion of hydrocarbons in which deactivated catalyst particles are regenerated in a moving bed.Type: GrantFiled: June 1, 2000Date of Patent: February 19, 2002Assignee: UOP LLCInventor: Thomas J. Gevelinger
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Publication number: 20020002111Abstract: Catalyst activation of a platinum reforming catalyst system contained in a multiple reactor system by simultaneously reducing the catalyst with hydrogen while introducing a nonmetallic chlorine-containing compound into a reactor of the multiple reactor system in an amount to provide from about 0.05 to about 0.3 weight percent chlorine on the catalyst and thereafter purging the system with about 100 to about 50,000 cubic feet of hydrogen per cubic foot of catalyst resulting in a reforming system having increased activity and providing enhanced RON values with reduced cracking of feedstock.Type: ApplicationFiled: July 31, 2001Publication date: January 3, 2002Applicant: Phillips Petroleum CompanyInventor: Fan-Nan Lin
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Publication number: 20010054573Abstract: Catalyst activation of a platinum reforming catalyst system contained in a multiple reactor system by simultaneously reducing the catalyst with a sustained hydrogen flow through the multiple reactor system while introducing a nonmetallic chlorine-containing compound serially into each reactor of the multiple reactor system in an amount to provide from about 0.05 to about 0.3 weight percent chlorine on the catalyst and thereafter purging the system with about 100 to about 50,000 cubic feet of hydrogen per cubic foot of catalyst prior to commencing use of the treated catalyst system for reforming hydrocarbon feed.Type: ApplicationFiled: July 31, 2001Publication date: December 27, 2001Applicant: Phillips Petroleum CompanyInventors: Donald H. Macahan, Fan-Nan Lin
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Patent number: 6290916Abstract: A method and apparatus are disclosed for removing water from a recycle gas stream in a catalyst regeneration process. A recycle gas stream contacts catalyst and the catalyst sorbs water from the recycle gas. Some of the now-dried recycle gas recirculates to the regeneration process, thereby decreasing the water content in the regeneration process. The catalyst containing sorbed water passes to a desorption zone, where water is desorbed from the catalyst and the desorbed water is rejected from the process. This method and apparatus are useful for extending the life of catalyst in catalytic hydrocarbon processes that employ continuous or semi-continuos catalyst regeneration zones.Type: GrantFiled: June 1, 2000Date of Patent: September 18, 2001Assignee: UOP LLCInventors: Paul A. Sechrist, Delmar W. Robinson, William D. Schlueter
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Patent number: 6165352Abstract: A continuous process for the dehydrogenation of a hydrocarbon and/or oxygenated hydrocarbon feed, comprising contacting the hydrocarbon and/or oxygenated hydrocarbon feed with a dehydrogenation catalyst at elevated temperature in a reaction zone characterised in that the catalyst is capable of retaining hydrogen and (a) is contacted with a feed to form a dehydrogenated product and hydrogen, at least some of the hydrogen formed being adsorbed by the catalyst and/or reacting therewith to reduce at least part of the catalyst; (b) the dehydrogenated product and any unadsorbed/unreacted hydrogen is removed from the reaction zone; (c) at least some of the adsorbed hydrogen is removed from the catalyst and/or at least some of the reduced catalyst is oxidised; and (d) reusing the catalyst from step (c) in step (a).Type: GrantFiled: March 12, 1998Date of Patent: December 26, 2000Assignee: BP Chemicals LimitedInventors: Jeremy Bernard Cooper, Jonathon Charles Frost, Stephen Roy Partington
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Patent number: 6153089Abstract: A process for converting undesirable olefinic hydrocarbon streams to hydrogen and petrochemical feedstock e.g. light olefins in C.sub.2 -C.sub.4 range and aromatics especially toluene and xylenes, which comprises simultaneous cracking and reforming at olefin rich hydrocarbons using a catalyst consisting of dehydrogenating metal components, shape selective zeolite components and large pore acidic components in different proportions in a circulating fluidized bed reactor-regenerator system having reactor temperature within 450-750.degree. C. and WHSV of 0.1-60 hour.sup.-1.Type: GrantFiled: March 31, 1999Date of Patent: November 28, 2000Assignee: Indian Oil Corporation LimitedInventors: Asit Kumar Das, Sukumar Mandal, Sobhan Ghosh, Debasis Bhattacharyya, Ganga Shanker Mishra, Jagdev Kumar Dixit, Arvind Pratap Singh, Ashok Kumar Tewari, Satish Makhija, Manoranjan Santra, Latoor Lal Saroya, Shankar Sharma, Satyen Kumar Das
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Patent number: 6117809Abstract: A method is disclosed for recovering chlorine-containing species from an outlet stream of a zone in which the catalytic metal of a chloride-containing catalyst is reduced. The outlet stream is passed to a sorption zone which contains catalyst and which is maintained at sorption conditions. The catalyst in the sorption zone sorbs the chlorine-containing species from the outlet stream. This method captures and retains within the process the chlorine-containing species that would otherwise be lost from the process and that would need to be replaced by the injection of make-up chlorine-containing species. This method results in a significant savings in capital and operating costs of a catalyst regeneration process that includes a reduction step. This method is adaptable to many catalytic hydrocarbon conversion processes which pass catalyst particles between or among moving bed reaction and regeneration zones.Type: GrantFiled: December 19, 1996Date of Patent: September 12, 2000Assignee: UOP LLCInventors: Paul A. Sechrist, Delmar W. Robinson
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Patent number: 6042717Abstract: An FCC feed injection arrangement injects feed transversely from the sides of a restricted opening into a stream of FCC catalyst to provide good feed and catalyst contacting in an arrangement that simplifies external pipe configurations and maintenance of the feed injection system. The invention forms a venturi or restricted opening by forming a generally square opening between two parallel extended chords on opposite sides of the riser. A venturi area may be built out of refractory lining or other abrasion resistant structures. The invention may use horizontally extended pipes that are tangentially positioned apart from each other across from the restricted opening to provide a simple construction for the feed injection arrangement. The pipes are easily inserted and withdrawn from the riser to permit easy maintenance of the nozzles in the highly erosive environment.Type: GrantFiled: December 5, 1997Date of Patent: March 28, 2000Assignee: UOP LLCInventors: William H. Radcliffe, Brian W. Hedrick
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Patent number: 6036845Abstract: A catalytic reforming process comprises a prereactor which provides an intermediate stream to a riser reactor with multiple catalyst injection points to obtain high aromatics yields from a naphtha feedstock. Product from the riser reactor typically is discharged into a fluidized-bed reforming reactor, in which the reforming reaction is completed and catalyst is separated from hydrogen and hydrocarbons. Hydrocarbons from the reactor are separated to recover an aromatized product. Catalyst is regenerated to remove coke and reduced for reuse in the reforming process.Type: GrantFiled: May 4, 1998Date of Patent: March 14, 2000Assignee: UOP LLCInventors: Gregory A. Funk, Christopher D. Gosling, Paula L. Bogdan
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Patent number: 6015932Abstract: A reactivation process is disclosed for a catalyst formulated to selectively upgrade naphtha to obtain an isoparaffin-rich product for blending into gasoline. The process utilizes a solid strong-acid catalyst comprising an anion-modified metal oxide, preferably comprising a sulfated support of an oxide or hydroxide of a Group IVB (IUPAC 4) metal, and a platinum-group metal component.Type: GrantFiled: August 28, 1998Date of Patent: January 18, 2000Assignee: UOP LLCInventor: Stanley J. Frey
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Patent number: 5972201Abstract: Magnetic separation of fluid cracking catalyst and magnetic hooks can be improved by adding antimony, in the feed or during catalyst manufacture, to enhance the magnetic susceptibility, thus increasing the separation efficiency of the older less active fluid cracking catalyst from the more desirable fraction for recycle. Antimony can also be used as a tag for determination of age distribution of said catalyst. Concentration levels of 0.005-15 wt. % antimony (Sb) on the catalyst or sorbent are preferred. The invention is particularly preferred on catalyst and sorbents which comprise at least about 0.001 wt. %, more preferably above about 0.01 wt. % iron, because the antimony has been found to enhance the magnetic susceptibility of iron-containing particulates.Type: GrantFiled: February 24, 1997Date of Patent: October 26, 1999Assignee: Marathon Ashland Petroleum LLCInventors: Terry L. Goolsby, Maurice M. Mitchell
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Patent number: 5965473Abstract: A method is disclosed for recovering chlorine-containing species from the outlet gas of a hydrocarbon conversion process with a cyclic regeneration operation. The outlet gas from an off-stream catalyst bed in which regeneration is occurring is passed to another off-stream catalyst bed which contains spent catalyst and which is maintained at sorption conditions. The spent catalyst particles sorb the chlorine-containing species from the outlet gas. This method captures and retains within the hydrocarbon conversion process chlorine-containing species that would otherwise be scrubbed and lost from the process and that would need to be replaced by the injection of make-up chlorine-containing species. This method results in significant savings in operating costs of a cyclic regeneration process. This method is adaptable to many processes for the catalytic conversion of hydrocarbons in which deactivated catalyst are regenerated by a cyclic regeneration operation.Type: GrantFiled: December 13, 1996Date of Patent: October 12, 1999Assignee: UOP LLCInventors: Paul A. Sechrist, Delmar W. Robinson
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Patent number: 5948240Abstract: A process for contacting reactants with a particulate catalyst while indirectly contacting the reactants with a heat exchange medium amid simultaneous exchange of catalyst particles by an operation that sequentially restricts reactant flow while moving catalyst through reaction stacks in which the reactant flow has been restricted. The process permits a change out of catalyst in a channel type reactor arrangement that would normally restrict catalyst flow during operation. Moving catalyst through a heat exchange type reactor having reactant and heat exchange channels permits control of catalyst activity as well as temperatures.Type: GrantFiled: November 17, 1997Date of Patent: September 7, 1999Assignee: UOP LLCInventors: Robert C. Mulvaney, III, Kevin J. Brandner, Steven T. Arakawa, Paul Anderson