Alcohol, Ester, Or Ether Patents (Class 585/639)
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Patent number: 7737316Abstract: A method for determining an amount of flocculant effective to recover a molecular sieve crystalline product that comprises the steps of (a) preparing a molecular sieve crystalline product mixture; (b) separating the molecular sieve crystalline product mixture into a plurality of samples; (c) mixing at least two of the plurality of samples with a quantity of flocculant to produce a plurality of flocculated samples, wherein at least two of the plurality of flocculated samples have a different ratio of flocculant to molecular sieve crystalline product mixture; (d) measuring the viscosity or zeta potential of at least two of the plurality of flocculated samples having a different ratio of flocculant to molecular sieve crystalline product mixture; (e) establishing a relationship between the quantity of flocculant and the viscosity or zeta potential measurements; and (f) determining from the relationship the amount of flocculant effective to recover the molecular sieve crystalline product.Type: GrantFiled: June 14, 2006Date of Patent: June 15, 2010Assignee: ExxonMobil Chemical Patents Inc.Inventors: Yun-Feng Chang, Daria N. Lissy
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Publication number: 20100145125Abstract: The present invention discloses a process of producing light olefins through the conversion of methanol and ethanol. The process comprises: feeding a first portion of a feed via a distributor at the bottom of a fluidized-bed reactor to a reaction zone containing a catalyst; feeding a second portion of the feed from at least one location above the distributor to the reaction zone; contacting the feed with the catalyst and allowing it to react, to give a stream containing ethylene and propylene; and withdrawing the stream containing ethylene and propylene from the top of the reactor, and passing it to a separation system to separate ethylene and propylene, wherein the first portion of the feed and the second portion of the feed comprises each independently methanol or ethanol or the both, with a proviso that the total feed comprises both methanol and ethanol, and a weight ratio of methanol to ethanol in the total feed is in a range of from 99:1 to 0.1:1.Type: ApplicationFiled: February 4, 2008Publication date: June 10, 2010Applicants: CHINA PETROLEUM & CHEMICAL CORPORATION, Shanghai Research Institute of Petrochemical Technology SinopecInventors: Zaiku Xie, Guozhen Qi, Huiming Zhang, Siqing Zhong
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Patent number: 7732537Abstract: One aspect of the invention relates to a method for formulating a molecular sieve catalyst composition, the method comprising the steps of: (a) providing a synthesized molecular sieve having been recovered in the presence of a flocculant; (b) thermally treating the synthesized molecular sieve at a temperature from about 50° C. to about 250° C. and under other conditions sufficient to form a thermally treated synthesized molecular sieve having a first LOI less than 26% and a first micropore surface area; (c) aging the thermally treated synthesized molecular sieve for at least one year; (d) analyzing the aged, thermally treated molecular sieve to determine a second micropore surface area, wherein the second micropore surface area is 3% or less lower than the first micropore surface area; and (e) combining the aged, thermally treated synthesized molecular sieve, a binder, and optionally a matrix material to produce an aged, formulated molecular sieve catalyst composition.Type: GrantFiled: January 29, 2008Date of Patent: June 8, 2010Assignee: ExxonMobil Chemical Patents Inc.Inventors: Yun-feng Chang, Luc R. M. Martens, Machteld Maria Mertens, Stephen N. Vaughn
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Patent number: 7722825Abstract: The present invention provides a reactor system for converting an oxygenate-containing feed stream to an olefin-containing product stream. The system includes: (1) a first fluidized catalytic reactor for converting methanol to propylene, the first reactor having a fluidized catalyst system comprising a first catalyst and a second catalyst; (2) a second fluidized catalytic reactor communicating with the first fluidized catalytic reactor for cracking heavy olefins having four carbon atoms or greater into propylene, the second reactor having the fluidized catalyst system; (3) wherein the first catalyst is a non-zeolite molecular sieve catalyst; and (4) wherein the second catalyst is a zeolite molecular sieve catalyst.Type: GrantFiled: July 31, 2006Date of Patent: May 25, 2010Assignee: UOP LLCInventors: Andrea G. Bozzano, Bryan K. Glover, Peter R. Pujado
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Publication number: 20100105973Abstract: A process for conversion of methanol to olefins (MTO), including: contacting methanol and air in a methanol-to-olefins reactor; recovering an effluent from the methanol-to-olefins reactor comprising methanol, ethylene, and nitrogen oxides; separating the effluent via one or more reactive distillation and/or distillation stages using a hydrocarbon absorbent to recover a first fraction comprising ethylene and a second fraction comprising methane; wherein the separating comprises operating the one or more extractive distillation and/or distillation stages at temperatures and pressures sufficient to prevent any substantial conversion of nitrogen oxides to N2O3.Type: ApplicationFiled: October 29, 2008Publication date: April 29, 2010Applicant: Lummus Technology, Inc.Inventors: Stephen De Haan, Peter Daniel Kuzma,, JR.
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Patent number: 7700817Abstract: The current invention provides a process in which ethers are converted into ?-olefins by passage over a modified alumina catalyst. The alumina catalyst is made by treating gamma-alumina with a rare earth metal oxide such as lanthanum oxide, La2O3. The modified aluminum catalysts convert 1-methoxyoctane into 1-octene with high selectivity at high conversion rates.Type: GrantFiled: January 30, 2008Date of Patent: April 20, 2010Assignee: NOVA Chemicals (International) S.A.Inventors: Xiaoliang Gao, Stacy David Ross Johnston
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Publication number: 20100093877Abstract: A novel catalytic reactor suitable for use in chemical and petrochemical processes. The reactor is of a pillow panel that has superior heat transfer properties. This invention also relates to a chemical process, such as a Fischer-Tropsch synthesis process performed with use of the novel pillow panel reactor.Type: ApplicationFiled: July 29, 2009Publication date: April 15, 2010Inventor: Rafael Espinoza
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Patent number: 7692056Abstract: The present invention provides a process for producing lower olefins from methanol or dimethyl ether. The technical problem mainly addressed in the present invention is to overcome the defects presented in the prior art including high operation temperature, low yield and selectivity of lower olefins as the target products, and poor stability and short regeneration period of catalyst.Type: GrantFiled: August 15, 2006Date of Patent: April 6, 2010Assignee: Shanghai Research Institute of Petrochemical Technology SinopecInventors: Zaiku Xie, Juntao Liu, Weimin Yang, Siqing Zhong, Xiaofeng Chen
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Patent number: 7687677Abstract: A processing scheme and arrangement for enhanced olefin production involves recovering thermal energy from a reactor effluent stream resulting from the dehydrogenation of a dehydrogenatable hydrocarbon. The process involves contacting the reactor effluent stream with a circulating fluid stream in a first contact cooling zone to produce a product stream and to form a heated circulating fluid stream. Thermal energy is recovered from the heated circulating fluid stream via indirect heat exchange with a first process stream in a first heat exchange zone to form a cooled circulating fluid stream. The cooled circulating fluid stream can be subsequently cooled and at least a first portion thereof returned to the first contact cooling zone.Type: GrantFiled: September 29, 2006Date of Patent: March 30, 2010Assignee: UOP LLCInventors: Dennis E. O'Brien, Joseph E. Zimmermann, Douglas G. Stewart
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Publication number: 20100076238Abstract: A process for producing a fuel or fuel blending component from co-processing at least two different classes of renewable feedstocks, is presented. One feedstock comprises glycerides and free fatty acids in feedstocks such as plant and animal oils while the other feedstock comprises biomass derived pyrolysis oil. The source of the animal or plant oil and the biomass may be the same renewable source.Type: ApplicationFiled: November 24, 2009Publication date: March 25, 2010Applicant: UOP LLCInventors: Timothy A. Brandvold, Michael J. McCall
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Patent number: 7678955Abstract: A composite material comprises: (a) a porous crystalline inorganic oxide material comprising a first framework structure defining a first set of uniformly distributed pores having an average cross-sectional dimension of from 0.3 to less than 2 nanometers and comprising a second framework structure defining a second set of uniformly distributed pores having an average cross-sectional dimension of from 2 to 200 nanometers and (b) a co-catalyst within the second set of pores of the porous crystalline inorganic oxide material (a).Type: GrantFiled: October 13, 2005Date of Patent: March 16, 2010Assignee: ExxonMobil Chemical Patents IncInventors: Luc R. M. Martens, Sebastien P. B. Kremer
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Patent number: 7678958Abstract: This invention is directed to a method of removing dimethyl ether from an olefin stream. The method includes distilling the olefin stream so that the dimethyl ether is separated out of the olefin stream with propane. The olefin stream can then be further distilled to provide a polymer grade ethylene stream and a polymer grade propylene stream, with each stream containing not greater than about 10 wppm dimethyl ether.Type: GrantFiled: September 30, 2002Date of Patent: March 16, 2010Assignee: ExxonMobil Chemical Patents IncInventors: Minquan Cheng, Jeffrey J. Phillips, Michael Peter Nicoletti, David Ritchie Lumgair, Jr., John Richard Shutt, Jeffrey Alan Kabin, Wilfried Borgmann, Josef Kunkel, Helmut Fritz, Roland Walzi, Gerhard Lauermann, Klaus Muller
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Publication number: 20100056838Abstract: The present invention relates to a process for the dehydration of one or more alcohols, which process comprises contacting one or more alcohols in the presence of one or more ethers with a supported heteropolyacid catalyst, characterised in that: (i) the heteropolyacid is tungstosilicic acid in the form of the free acid and supported on a silica support, (ii) said supported heteropolyacid catalyst has a heteropolyacid loading of from 0.5 to 0.9 mg/m2 of catalyst support surface area, and (iii) that said process comprises passing the one or more alcohols and one or more ethers in the vapour phase over a bed of the supported heteropolyacid catalyst at a temperature between 200° C. and 280° C.Type: ApplicationFiled: May 2, 2008Publication date: March 4, 2010Inventors: Nigel Keith Potter, Karen Small, Javad Tabatabei
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Patent number: 7655826Abstract: This invention relates to a method of making an olefin from a dialkyl ether comprising (a) introducing an ether having a formula CxH2x+1CyH2y+1 into a thermal or catalytic cracking unit processing a hydrocarbon feedstock; and (b) decomposing at least a portion of the ether to form an olefin having a formula CxH2x and/or CyH2y and an alcohol having a formula CxH2x+1 and/or CyH2y+1OH, wherein x and y independently range from about 1 to about 30. This invention also relates to a method of reducing coking in a thermal or catalytic cracking unit comprising (a) introducing an ether, having a formula CxH2x+1OCyH2y+1, into the cracking unit processing a hydrocarbon feedstock in an amount effective to reduce coke formation relative to processing the hydrocarbon feedstock in the absence of the ether, wherein x and y independently range from about 1 to about 30.Type: GrantFiled: April 12, 2005Date of Patent: February 2, 2010Assignee: ExxonMobil Chemical Patents Inc.Inventors: Charles M. Yarbrough, Vijay Swarup, Patrick Joseph Maher, Albert Y Hu, Michael Walter Bedell
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Patent number: 7655825Abstract: A method is disclosed for producing a synthetic fuel, especially diesel fuel and in addition gasoline, liquefied petroleum gas and heating gas from a gas mixture comprising an oxygenate wherein the oxygenate is methanol and/or dimethyl ether and/or another oxygenate, through a series of steps, including olefin-formation, oligomerization of the olefins, and several separation steps and recycling steps, in particular the recycling of a stream of saturated hydrocarbons following the oligomerization of olefins back to the olefin-forming stage, to obtain the diesel fuel and the other synthetic fuels in high yield.Type: GrantFiled: December 1, 2005Date of Patent: February 2, 2010Assignee: Lurgi AGInventors: Martin Rothämel, Bernd Ahlers, Matthias Wagner, Harold Koempel, Juergen Hofmockel
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Publication number: 20100016648Abstract: The present invention discloses a method for enhancing yields of ethylene and propylene in MTO process, comprising: i) feeding a feedstock comprising C4 hydrocarbon and at least one of methanol and dimethyl ether from a distributor at the bottom of a reactor and optionally from at least one location above the distributor into a reaction zone containing a molecular sieve catalyst; ii) allowing the feedstock to react in the presence of the molecular sieve catalyst, to form a product stream comprising ethylene, propylene and C4 hydrocarbon; iii) withdrawing the product stream from the top of the reactor, and passing it to a separation system, to separate ethylene, propylene and C4 hydrocarbon; and iv) circulating the C4 hydrocarbon separated in step iii) back to step i).Type: ApplicationFiled: February 5, 2008Publication date: January 21, 2010Applicant: CHINA PETROLEUM & CHEMICAL CORPORATIONInventors: Guozhen Qi, Siqing Zhong, Yuanfei Yang, Huawen Wang
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Publication number: 20090326298Abstract: 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: ApplicationFiled: June 30, 2008Publication date: December 31, 2009Inventor: Andrea G. Bozzano
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Publication number: 20090320356Abstract: The present invention relates to a method of stockpiling a fuel source by storing methanol or dimethyl ether in appropriate storage facilities to provide an alternative fuel source that can be used to avoid shortages due to unavailability, limited availability or excessive costs of oil.Type: ApplicationFiled: May 20, 2009Publication date: December 31, 2009Inventors: George A. Olah, G.K. Surya Prakash
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Publication number: 20090299117Abstract: This invention is a process for producing diisobutylene from isobutylene. The process comprises first contacting a sulfonic acid resin with a reaction feed comprising isobutylene and tertiary butyl alcohol to produce a product stream comprising diisobutylene, isobutylene, tertiary butyl alcohol, and water. The product stream is distilled to produce a first overhead stream comprising water and isobutylene and a first bottoms stream comprising diisobutylene and tertiary butyl alcohol. Water is separated from the first overhead stream, and the resulting isobutylene-enriched stream is recycled back to the reaction step. The first bottoms stream is distilled to produce a second overhead stream comprising tertiary butyl alcohol and a bottoms product stream comprising diisobutylene.Type: ApplicationFiled: May 29, 2008Publication date: December 3, 2009Inventors: Natalie C.M.B. Nichols, Christopher P. Renaudo, David W. Leyshon
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Patent number: 7626067Abstract: The present invention is a process for cleaning and using byproduct water from an oxygenate to olefin process to satisfy the water requirement of the oxygenate to olefin process.Type: GrantFiled: June 17, 2004Date of Patent: December 1, 2009Assignee: ExxonMobil Chemical Patents Inc.Inventors: Cor F. Van Egmond, Zhong Yi Ding, James H. Beech, Jr., Michael P. Nicoletti
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Patent number: 7622624Abstract: A silicoaluminophosphate molecular sieve is disclosed that comprises first and second intergrown phases of a CHA framework type and an AEI framework type, wherein said first intergrown phase has an AEI/CHA ratio of from about 5/95 to about 40/60 as determined by DIFFaX analysis, the second intergrown phase has an AEI/CHA ratio of about 30/70 to about 55/45 as determined by DIFFaX analysis and said molecular sieve has a silica to alumina molar ratio (Si/Al2) from about 0.13 to about 0.24.Type: GrantFiled: March 4, 2005Date of Patent: November 24, 2009Assignee: ExxonMobil Chemical Patents Inc.Inventors: Machteld M. Mertens, An Verberckmoes, Marcel J. Janssen, Yun Feng Chang, Luc R. M. Martens, Stephen Neil Vaughn, Kenneth Ray Clem, Wilfried J. Mortier
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Patent number: 7622625Abstract: The present invention comprises a process for conversion of oxygenates to olefins comprising contacting within a reactor the oxygenates with a catalyst to produce light olefins and wherein the reactor comprises at least two zones, a first zone wherein gas circulates at a faster rate than a second zone wherein a gas circulates at a slower rate; and inserting a quantity of inert gas into the second zone to increase circulation of any materials located in said second zone. The invention prevents accumulation of undesirable by-products within stagnant zones within the reactor and reduces the amount of coke deposited on catalyst or on surfaces within these zones.Type: GrantFiled: September 27, 2005Date of Patent: November 24, 2009Assignee: UOP LLCInventors: Paolo Palmas, Daniel N. Myers
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Patent number: 7622032Abstract: The present invention relates to new crystalline molecular sieve SSZ-74 prepared using an hexamethylene-1,6-bis-(N-methyl-N-pyrrolidinium) dication as a structure-directing agent, and processes employing SSZ-74 in a catalyst.Type: GrantFiled: December 21, 2006Date of Patent: November 24, 2009Assignee: Chevron U.S.A. Inc.Inventors: Stacey I. Zones, Allen W. Burton, Jr.
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Patent number: 7622626Abstract: The present invention comprises a process for conversion of oxygenates to olefins comprising contacting within a reactor the oxygenates with a catalyst to produce light olefins and wherein the reactor comprises at least two zones, a first zone wherein gas circulates at a faster rate than a second zone wherein a gas circulates at a slower rate; and inserting a quantity of inert gas into the second zone to increase circulation of any materials located in said second zone. The invention prevents accumulation of undesirable by-products within stagnant zones within the reactor and reduces the amount of coke deposited on catalyst or on surfaces within these zones.Type: GrantFiled: May 7, 2008Date of Patent: November 24, 2009Assignee: UOP LLCInventors: Paolo Palmas, Daniel N. Myers, Bryan K. Glover
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Patent number: 7619127Abstract: A method for maximizing the contact between solid catalyst particles and a feedstock while minimizing undesirable side reactions is provided. A plurality of feedstock jets are contacted with solid catalyst particles in a reactor having a non-homogenous contact zone and a unified flow contact zone.Type: GrantFiled: December 23, 2003Date of Patent: November 17, 2009Assignee: ExxonMobil Chemical Patents Inc.Inventor: Jeffrey S. Smith
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Publication number: 20090281362Abstract: The present invention relates to a process for the production of propylene from a feedstock comprising propanol.Type: ApplicationFiled: November 22, 2006Publication date: November 12, 2009Inventors: Craig Bailey, Leslie William Bolton, Benjamin Patrick Gracey, Michael Keith Lee, Stephen Roy Partington
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Publication number: 20090270668Abstract: The present invention relates to a process for the co-production of ethylene and propylene from an ethanol feedstock and a propanol feedstock.Type: ApplicationFiled: November 22, 2006Publication date: October 29, 2009Inventors: Craig Bailey, Leslie William Bolton, Benjamin Patrick Gracey, Michael Keith Lee, Stephen Roy Partington
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Patent number: 7608746Abstract: Propylene is prepared by a process for producing propylene, comprising: contacting a reaction mixture of ethylene and methanol and/or dimethyl ether in the presence of a catalyst while controlling the amount of ethylene that is discharged from the reaction system to a reduced level in comparison to the amount of ethylene that is being fed into the reaction system, and while controlling the yield of propylene to at least 40 mol %, based on the sum of the number of moles of methanol and two times the number of moles of dimethyl ether, which are being fed into the reaction system.Type: GrantFiled: June 12, 2006Date of Patent: October 27, 2009Assignee: Mitsubishi Chemical CorporationInventors: Tohru Setoyama, Yumiko Yoshikawa, Kagoto Nakagawa
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Publication number: 20090259086Abstract: The present invention relates to a process for the production of mono-olefin(s) from a feedstock comprising of at least one monohydric aliphatic paraffinic alcohol.Type: ApplicationFiled: November 22, 2006Publication date: October 15, 2009Applicant: BP CHEMICALS LIMITEDInventors: Craig Bailey, Leslie William Bolton, Benjamin Patrick Gracey, Michael Keith Lee, Stephen Roy Partington
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Patent number: 7592496Abstract: Improved processing for the production of light olefins is provided involving synthesis gas conversion to form an effluent including product dimethyl ether, subsequent separation of the product dimethyl ether and conversion thereof to the desired light olefins. The synthesis gas conversion effluent may also desirably include methanol and at least a portion of such methanol may be employed to effect the separation of the product dimethyl ether.Type: GrantFiled: December 30, 2005Date of Patent: September 22, 2009Assignee: UOP LLCInventors: Bipin V. Vora, Peter R Pujado
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Patent number: 7588739Abstract: A fixed-bed multitubular reactor, comprising a plurality of reaction tubes (3) filled with a catalyst and catalyst temperature measurers (4) measuring the temperatures of the reaction tubes near the radical center parts thereof. The catalyst temperature measurer (4) is installed in each of a part of the plurality of reaction tubes (3), and the measurement positions thereof are differentiated from each other in the longitudinal direction of the reaction tubes (3).Type: GrantFiled: July 13, 2004Date of Patent: September 15, 2009Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Miezi Sugiyama, Yoshimasa Ando, Yoshiyuki Taniguchi
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Patent number: 7589244Abstract: For producing propylene and co-producing desulphurized gasoline with a high octane number from a catalytically cracked gasoline cut, and a steam cracking C4/C5 cut, conduct at least one one-step oligocracking stage, a selective hydrogenation stage for FCC gasoline and a hydrotreatment stage.Type: GrantFiled: October 18, 2006Date of Patent: September 15, 2009Assignee: Institut Francais de PetroleInventors: Vincent Coupard, Karine Surla
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Patent number: 7576250Abstract: 1-Ethers may be cracked over untreated ?-alumina having a pore volume of more than 1.0 cc/g and an average pore diameter of more than 150 angstroms (?) at a temperature from 250 to 350° C. and a pressure from 10 to 200 kPa at high conversions and good selectivity to produce the corresponding 1-alkene. The process is particularly useful to produce 1-octene from 1-methoxyoctane.Type: GrantFiled: February 21, 2007Date of Patent: August 18, 2009Assignee: Nova Chemicals (International) S.A.Inventors: Xiaoliang Gao, Andrzej Krzywicki, Stacy David Ross Johnston, Alexandra Kalivoda
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Publication number: 20090203949Abstract: A process for the production of a hydrocarbon comprises reacting methanol, dimethyl ether, methyl acetate or mixtures thereof, with an olefin in the presence of methyl halide and/or hydrogen halide and at least one compound selected from the group consisting of ruthenium carbonyl halides, osmium carbonyl halides and mixtures thereof.Type: ApplicationFiled: August 29, 2007Publication date: August 13, 2009Inventor: John Glenn Sunley
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Publication number: 20090192276Abstract: One aspect of the invention relates to a method for formulating a molecular sieve catalyst composition, the method comprising the steps of: (a) providing a synthesized molecular sieve having been recovered in the presence of a flocculant; (b) thermally treating the synthesized molecular sieve at a temperature from about 50° C. to about 250° C. and under other conditions sufficient to form a thermally treated synthesized molecular sieve having a first LOI less than 26% and a first micropore surface area; (c) aging the thermally treated synthesized molecular sieve for at least one year; (d) analyzing the aged, thermally treated molecular sieve to determine a second micropore surface area, wherein the second micropore surface area is 3% or less lower than the first micropore surface area; and (e) combining the aged, thermally treated synthesized molecular sieve, a binder, and optionally a matrix material to produce an aged, formulated molecular sieve catalyst composition.Type: ApplicationFiled: January 29, 2008Publication date: July 30, 2009Inventors: Yun-Feng Chang, Luc R.M. Martens, Machteld Maria Mertens, Stephen N. Vaughn
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Publication number: 20090187056Abstract: Process for the preparation of an olefin comprising contacting a diluted olefinic hydrocarbon feed, containing an oxygenate feed, an olefinic co-feed and one or more diluents, with a solid zeolite catalyst to obtain a reaction product containing one or more olefins, and wherein the diluted feed is contacted with the solid zeolite catalyst at a Gas Hourly Space Velocity, as measured at standard temperature and pressure, of at least 10,000 ml diluted olefinic hydrocarbon feed/gram zeolite catalyst/hour.Type: ApplicationFiled: May 16, 2007Publication date: July 23, 2009Inventors: Leslie Andrew Chewter, Michiel Johannes Franciscus Maria Verhaak, Jeroen Van Westrenen
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Publication number: 20090187058Abstract: Process for the preparation of an olefin comprising a) reacting a combination of an oxygenate feed selected from the group consisting of alcohols and ethers, and an olefinic co-feed in a reactor in the presence of a one-dimensional zeolite having 10-membered ring channels to prepare an olefinic reaction mixture; b) separating the olefinic reaction mixture into at least a first olefinic product fraction and a second olefinic fraction containing olefins with 4 or more carbon atoms; and c) recycling at least part of the second olefinic fraction obtained in step b) to step a) as olefinic co-feed.Type: ApplicationFiled: May 16, 2007Publication date: July 23, 2009Inventors: Leslie Andrew Chewter, Michiel Johannes Franciscus Maria Verhaak, Jeroen Van Westrenen
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Publication number: 20090187059Abstract: Process for the preparation of ethylene and/or propylene comprising reacting an oxygenate feed and an olefinic co-feed in a reactor in the presence of a zeolite catalyst to prepare an olefinic reaction mixture; wherein the olefinic co-feed is partially obtained from an olefinic refinery stream and partially obtained from a olefinic recycle stream.Type: ApplicationFiled: May 16, 2007Publication date: July 23, 2009Inventors: Leslie Andrew Chewter, Michiel Johannes Franciscus Maria Verhaak, Jeroen Van Westrenen
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Patent number: 7557256Abstract: This invention provides methods of making molecular sieve catalyst particles, molecular sieve slurries that can be used in such methods, molecular sieve catalyst compositions and their use in catalytic hydrocarbon conversion processes. In one of its aspects, the invention provides a method of making molecular sieve catalyst particles, the method comprising the steps of: a) providing a solution or suspension of an aluminum-containing inorganic oxide precursor in a liquid medium; b) combining the solution or suspension of aluminum-containing inorganic oxide precursor with a molecular sieve, and optionally other formulating agents, to form a catalyst formulation slurry; c) aging the catalyst formulation slurry to generate in said slurry a percentage, or increase in said slurry the existing percentage, of aluminum atoms of the aluminum-containing precursor in the form of oligomers having a sharp 27 Al NMR peak at 62-63 ppm; and d) forming molecular sieve catalyst particles from the catalyst formulation slurry.Type: GrantFiled: June 14, 2007Date of Patent: July 7, 2009Assignee: ExxonMobil Chemical Patents Inc.Inventors: Yun-Feng Chang, Stephen N. Vaughn, Kenneth R. Clem, Luc R. Martens, Weiguo Hu
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Patent number: 7550073Abstract: The present invention relates to new crystalline molecular sieve SSZ-70 prepared using a N,N?-diisopropyl imidazolium cation as a structure-directing agent, methods for synthesizing SSZ-70 and processes employing SSZ-70 in a catalyst.Type: GrantFiled: November 2, 2005Date of Patent: June 23, 2009Assignee: Chevron U.S.A., Inc.Inventors: Stacey I. Zones, Allen W. Burton, Jr.
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Patent number: 7544851Abstract: In a method of synthesizing an aluminophosphate or silicoaluminophosphate molecular sieve, a synthesis mixture is prepared by mixing a plurality of starting materials including at least a source of water, a source of phosphorus, a source of aluminum, optionally, a source of silicon and, and at least one organic directing agent for directing the formation of said molecular sieve. The starting materials are maintained at a temperature between 25° C. and 50° C., preferably between 30° C. and 45° C., during the mixing and until preparation of the starting mixture is complete, whereafter the synthesis mixture is heated to a crystallization temperature between about 100° C. and about 350° C. until crystals of the molecular sieve are produced. When crystallization is complete, the molecular sieve is recovered.Type: GrantFiled: March 7, 2007Date of Patent: June 9, 2009Assignee: ExxonMobil Chemical Patents Inc.Inventors: Machteld Maria Mertens, Thomas H. Colle
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Publication number: 20090143544Abstract: Integrated processes of preparing industrial chemicals starting from seed oil feedstock compositions containing one or more unsaturated fatty acids or unsaturated fatty acid esters, which are essentially free of metathesis catalyst poisons, particularly hydroperoxides; metathesis of the feedstock composition with a lower olefin, such as ethylene, to form a reduced chain olefin, preferably, a reduced chain ?-olefin, and a reduced chain unsaturated acid or ester, preferably, a reduced chain ?,?-unsaturated acid or ester. The reduced chain unsaturated acid or ester may be (trans)esterified to form a polyester polyolefin, which may be epoxidized to form a polyester polyepoxide. The reduced chain unsaturated acid or ester may be hydroformylated with reduction to produce an ?,?-hydroxy acid or ?,?-hydroxy ester, which may be (trans)esterified with a polyol to form an ?,?polyester polyol.Type: ApplicationFiled: December 5, 2008Publication date: June 4, 2009Applicant: Dow Global Technologies Inc.Inventors: Zenon Lysenko, Bob R. Maughon, Jozef Bicerano, Kenneth A. Burdett, Christopher P. Christenson, Clark H. Cummins, Marvin L. Dettloff, Alan K. Schrock, P. J. Thomas, Richard D. Varjian, Jerry E. White, John Michael Maher
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Publication number: 20090143626Abstract: The invention relates to a process for preparing an arylalkyl compound, which comprises contacting a feed comprising a bis(arylalkyl)ether with hydrogen in the presence of a catalyst at elevated temperature.Type: ApplicationFiled: August 15, 2008Publication date: June 4, 2009Inventors: Raymond Lawrence June, Timothy Michael Nisbet
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Patent number: 7541508Abstract: The invention relates to a molecular sieve catalyst composition, to a method of making or forming the molecular sieve catalyst composition, and to a conversion process using the catalyst composition. In particular, the invention is directed to making a formulated molecular sieve catalyst composition from a slurry of formulation composition of a synthesized molecular sieve that has not been fully dried, a binder and an optional matrix material. In a more preferred embodiment, the weight ratio of the binder to the molecular sieve and/or the solid content of the slurry is controlled to provide an improved attrition resistant catalyst composition, particularly useful in a conversion process for producing olefin(s), preferably ethylene and/or propylene, from a feedstock, preferably an oxygenate containing feedstock.Type: GrantFiled: December 18, 2006Date of Patent: June 2, 2009Assignee: ExxonMobile Chemical Patents Inc.Inventors: Stephen N. Vaughn, Yun-feng Chang, Luc R. M. Martens, Kenneth R. Clem, Machteld M. Mertens, Albert E. Schweizer
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Publication number: 20090137856Abstract: 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: ApplicationFiled: October 27, 2005Publication date: May 28, 2009Applicant: LURGI AGInventors: Gerhard Birke, Harald Koempel, Waldemar Liebner, Hermann Bach
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Patent number: 7537685Abstract: The present invention relates to new molecular sieve SSZ-71 prepared using a N-benzyl-1,4-diazabicyclo[2.2.2]octane cation as a structure-directing agent, methods for synthesizing SSZ-71 and processes employing SSZ-71 in a catalyst.Type: GrantFiled: November 2, 2005Date of Patent: May 26, 2009Assignee: Chevron U.S.A. Inc.Inventors: Cong-Yan Chen, Allen W. Burton, Jr., Ann J. Liang
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Publication number: 20090124841Abstract: In producing C2-C4 olefins, in particular propylene, from an educt mixture containing steam and oxygenates, such as methanol and/or dimethyl ether, the educt mixture is reacted in a reactor on a catalyst to a reaction mixture comprising low-molecular olefins and gasoline hydrocarbons, which in a first separating device is separated into a mixture rich in C5? olefins, a mixture rich in C5+ gasoline hydrocarbons, and an aqueous phase. To increase the yield of propylene the mixture rich in C5+ gasoline hydrocarbons is supplied to a second separating device, in which the aromatics contained in the mixture are separated. The residual stream largely free from aromatics is at least partly recirculated to the reactor.Type: ApplicationFiled: September 19, 2006Publication date: May 14, 2009Inventors: Martin Rothaemel, Henning Buchold, Harald Kompel, Andreas Glasmacher, Andreas Ochs
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Patent number: 7531705Abstract: The present invention provides a method for adding heat to a reactor system used to convert oxygenates to olefin, in which supplemental heat is added with a heating fuel, e.g., a torch oil, having low autoignition temperature, low sulfur, and low nitrogen content.Type: GrantFiled: November 20, 2006Date of Patent: May 12, 2009Assignee: ExxonMobil Chemical Patents Inc.Inventors: James R. Lattner, Keith H. Kuechler, Richard E. Walter
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Publication number: 20090118558Abstract: A process for producing an olefin and/or an ether is described, which comprises heating an alcohol in the presence of an acidic ionic compound which exists in a liquid state at a temperature of below 150° C.Type: ApplicationFiled: July 20, 2006Publication date: May 7, 2009Applicant: BP p.l.c.Inventors: Martin Philip Atkins, Martyn John Earle, Thomas Stephen Wittrig
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Patent number: 7528201Abstract: In a method of synthesizing a silicoaluminophosphate molecular sieve comprising a CHA framework type material, an AEI framework type material, or a material comprising at least one intergrown phase of an AEI framework type and a CHA framework type, the amount of alkali metal present in said synthesis mixture is controlled so as to reduce the crystal size of the molecular sieve and/or to increase the AEI character of the intergrown phase.Type: GrantFiled: January 31, 2005Date of Patent: May 5, 2009Assignee: ExxonMobil Chemical Patents Inc.Inventors: Machteld M. Mertens, An Verberckmoes