Including Polymerization Of Olefin Patents (Class 585/329)
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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: 7586018Abstract: A processing scheme and system for enhanced light olefin production, particularly for increased relative yield of propylene, involves oxygenate conversion to olefins and subsequent oxygenate conversion effluent stream treatment including dimerization of ethylene to butene and metathesis of butenes and/or hexenes with ethylene. The processing scheme and system may further involve isomerization of at least a portion of 1-butene to 2-butene to produce additional propylene.Type: GrantFiled: December 21, 2006Date of Patent: September 8, 2009Assignee: UOP LLCInventors: Andrea G. Bozzano, Bryan K. Glover
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Patent number: 7578926Abstract: A process for producing a lubricating base oil having high oxidation stability, wherein the feed used to prepare the lubricating base oil contains at least 5 wt. % olefins, said process comprising (a) determining the weight percent of olefins present in the feed by means of 1H NMR; (b) hydroprocessing the feed under hydroprocessing conditions selected to reduce the amount of olefins present to a target value which has been pre-determined by means of 1H NMR to produce a lubricating base oil having the desired oxidation stability; and (c) collecting a lubricating base oil having the selected oxidation stability from the hydroprocessing zone.Type: GrantFiled: April 20, 2005Date of Patent: August 25, 2009Assignee: Chevron U.S.A. Inc.Inventors: Susan M. Abernathy, David R. Johnson, John M. Rosenbaum, Don Young
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Patent number: 7556728Abstract: The present invention relates to a process for the manufacture of paraffinic hydrocarbons, which can be used as gasoline blending components. The obtained gasoline blending component is substantially free of sulphur compounds. The process comprises simultaneous hydrogenation of olefins and degradation of sulphur compounds by hydrogenolysis. In the process a feed-stock containing as impurities sulphur compounds is hydrogenated in two steps in the presence of a noble metal catalyst on aluminium oxide support, and in the first step the major part of olefins are converted and in the secondary step the remaining olefins and sulphur compounds react.Type: GrantFiled: October 9, 2003Date of Patent: July 7, 2009Assignee: Nestel Oil OyjInventors: Juha Lehtonen, Jaana Makkonen
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Patent number: 7550638Abstract: An integrated method that comprises a hydrocarbon thermal cracking operation to form at least one olefin product, coupled with dimerization and metathesis operations, the dimerization operation forming additional feed material for the metathesis operation, and the metathesis operation forming additional amounts of olefin product.Type: GrantFiled: November 16, 2005Date of Patent: June 23, 2009Assignee: Equistar Chemicals, LPInventors: Robert S. Bridges, Steven T. Coleman
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Publication number: 20090149684Abstract: Methods of oligomerizing hydrocarbons are disclosed. These methods include contacting olefins with an oligomerization catalyst in an oligomerization zone under oligomerization reaction conditions.Type: ApplicationFiled: December 6, 2007Publication date: June 11, 2009Inventors: Bruce B. Randolph, Jason J. Gislason, M. Bruce Welch, Richard L. Anderson, Dhananjay B. Ghonasgi, Robert W. Morton, Roland Schmidt
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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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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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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
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Patent number: 7525007Abstract: An ethane or other hydrocarbon feedstock is steam cracked to produce an ethylene stream which is processed in an ethylene plant recovery section to separate an ethane recycle and a polymer grade or chemical grade ethylene product stream. A portion of the ethylene product stream may then be reacted by dimerization to produce a butene stream. These formed butenes and/or butenes recovered from other sources and another portion of the ethylene product stream are reacted by metathesis to produce a propylene stream which is deethanized and separated from heavier hydrocarbons to produce the propylene product. The butene product stream may also be deethanized and is separated from heavier hydrocarbons. The overhead from the metathesis section deethanizer may be recycled to the ethylene plant recovery section. The reflux for the metathesis section deethanizer may be generated from the overhead or may be a portion of the ethylene product stream.Type: GrantFiled: February 7, 2007Date of Patent: April 28, 2009Assignee: ABB Lummus Global Inc.Inventor: Charles Sumner
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Patent number: 7518026Abstract: A catalyst composition for use in the conversion of oxygenates to olefins comprises a first crystalline silicoaluminophosphate molecular sieve comprising at least one intergrown form of an AEI structure type material and a CHA structure type material, and a second crystalline material different from said first molecular sieve and resulting from dehydration of an aluminophosphate or silicoaluminophosphate hydrate.Type: GrantFiled: October 1, 2004Date of Patent: April 14, 2009Assignee: ExxonMobil Chemical Patents Inc.Inventors: Machteld M. Mertens, Marcel J. Janssen, Yun-feng Chang, Stephen N. Vaughn
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Patent number: 7511184Abstract: 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 a molecular sieve catalyst composition of a molecular sieve, a binder and a matrix material, wherein the weight ratio of the binder to the molecular sieve 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: May 25, 2007Date of Patent: March 31, 2009Assignee: ExxonMobil Chemical Patents Inc.Inventors: Yun-feng Chang, Stephen N. Vaughn, Luc R. M. Martens, Kenneth R. Clem
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Patent number: 7476773Abstract: A process for preparing a gas oil cut comprises the following steps in succession: 1) oligomerizing an olefinic C2-C12 hydrocarbon cut, preferably C3-C7 and more preferably C3-C5; 2) separating the mixture of products obtained in step 1) into three cuts: a light cut containing unreacted C4 and/or C5 olefinic hydrocarbons, an intermediate cut having a T95 in the range 200-220° C. and a heavy cut comprising the complement; T95 being the temperature at which 95% by weight of product has evaporated, as determined in accordance with standard method ASTM D2887; 3) oligomerizing the intermediate cut obtained in the separation step; characterized in that in step 3), oligomerization is carried out in the presence of an olefinic C4 and/or C5 hydrocarbon cut in a weight ratio of intermediate cut to olefinic C4 and/or C5 cut in the range of 60/40 to 80/20.Type: GrantFiled: June 28, 2006Date of Patent: January 13, 2009Assignee: Institut Francais du PetroleInventors: Sylvain Louret, Vincent Coupard, Laurent Simon
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Patent number: 7473812Abstract: The invention relates to a process for preparing butene oligomers and tert-butyl ethers from C4 hydrocarbon streams, by converting the isobutene to butene oligomers and tert-butyl ethers and removing them from the C4 streams.Type: GrantFiled: December 3, 2003Date of Patent: January 6, 2009Assignee: OXENO Olefinchemie GmbHInventors: Udo Peters, Dieter Reusch, Andreas Beckmann, Dirk Roettger, Jochen Praefke
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Patent number: 7459593Abstract: Disclosed is a process for integrating a butene dimerization process with a metathesis process to remove isobutene from the feed stream to the metathesis reactor. The isobutene is preferentially dimerized in the dimerization process to leave n-butenes for metathesis with ethylene. An upstream selective hydrogenation process also isomerizes 1-butenes to 2-butenes which is the preferred butene reagent in the metathesis process. A common fractionator column for the dimerization and hydrogenation processes is also described.Type: GrantFiled: November 18, 2005Date of Patent: December 2, 2008Assignee: UOP LLCInventors: Steven L. Krupa, Jill M. Meister
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Patent number: 7425658Abstract: Method for producing 1-octene from butadiene by dimerizing and alkoxylating butadiene in the presence of one or more alkoxy substituted phosphine ligands under alkoxydimerization conditions with an alkoxydimerization catalyst, the alkoxydimerization conditions being effective to produce an alkoxydimerization product with one or more alkoxy substituted octadienes comprising primarily 1-alkoxy substituted octadiene; hydrogenating the alkoxydimerization product under hydrogenation conditions effective to produce a hydrogenation product which is primarily 1-alkoxy substituted octane; eliminating the alkoxy group from the hydrogenation product under elimination conditions effective to produce an elimination product which is primarily 1-octene and a first alkanol having from about 1 to about 3 carbon atoms; and separating the 1-octene from said elimination product.Type: GrantFiled: July 9, 2004Date of Patent: September 16, 2008Assignee: Shell Oil CompanyInventor: Charles Lee Edwards
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Patent number: 7420096Abstract: Limiting the sulphur level in olefin feedstocks to zeolite-catalysed oligomerization enhances selectivity to trimer and catalyst life and activity.Type: GrantFiled: June 18, 2007Date of Patent: September 2, 2008Assignee: ExxonMobil Chemical Patents Inc.Inventors: Jihad Mohammed Dakka, Georges M. K. Mathys, Marc P. H. Puttemans
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Patent number: 7414164Abstract: This invention is a process for producing diisobutylene from isobutylene. The process comprises first forming dry sulfonic acid resin by contacting water wet sulfonic acid resin catalyst with a first reaction feed comprising isobutylene under conditions effective to produce tertiary butyl alcohol from the reaction of isobutylene and water, and then contacting the dry sulfonic acid resin with a second reaction feed comprising isobutylene under conditions effective to oligomerize isobutylene to produce diisobutylene.Type: GrantFiled: April 22, 2005Date of Patent: August 19, 2008Assignee: Lyondell Chemical Technology, L.P.Inventor: Thomas S. Zak
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Patent number: 7411106Abstract: The invention relates to a catalyst composition, a method of making the same and its use in the conversion of a feedstock, preferably an oxygenated feedstock, into one or more olefin(s), preferably ethylene and/or propylene The catalyst composition comprises a molecular sieve and at least one metal oxide, such as a magnesium oxide that, when saturated with acetone and contacted with said acetone for 1 hour at 25° C., converts more than 80% of the acetone.Type: GrantFiled: March 5, 2007Date of Patent: August 12, 2008Assignee: ExxonMobil Chemical Patents Inc.Inventors: Teng Xu, Stephen N. Vaughn, Richard B. Hall, Doron Levin, James Clark Vartuli
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Patent number: 7402718Abstract: The invention relates to a conversion process for making olefin(s) using a molecular sieve catalyst composition. More specifically, the invention is directed to a process for converting a feedstock comprising an oxygenate in the presence of a molecular sieve catalyst composition, wherein the feedstock is free of or substantially free of metal salts.Type: GrantFiled: May 25, 2007Date of Patent: July 22, 2008Assignee: ExxonMobil Chemical Patents Inc.Inventors: Marcel J. G. Janssen, Teng Xu, Cor F. Van Egmond, Keith H. Kuechler, Stephen N. Vaughn, James Harding Beech, Jr.
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Patent number: 7378563Abstract: The invention relates to a conversion process of a feedstock, preferably an oxygenated feedstock, into one or more olefin(s), preferably ethylene and/or propylene, in the presence of a molecular sieve catalyst composition that includes a molecular sieve and a Group 3 metal oxide and/or an oxide of a Lanthanide or Actinide series element. The invention is also directed to methods of making and formulating the molecular sieve catalyst composition useful in a conversion process of a feedstock into one or more olefin(s).Type: GrantFiled: December 6, 2004Date of Patent: May 27, 2008Assignee: ExxonMobil Chemical Patents Inc.Inventors: Doron Levin, James Clark Vartuli
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Patent number: 7378562Abstract: The present invention is a process for removing alkynes and/or dienes from an olefin product stream withdrawn from an oxygenate-to-olefins reactor. The process comprises hydrogenating a first olefin stream that has alkynes and/or dienes in the presence of excess hydrogen and a first hydrogenation catalyst. The hydrogenation of the first olefin stream produces a second olefin stream that has unreacted hydrogen. The second olefin stream is contacted with a second hydrogenation catalyst producing a third olefin stream. The third olefin stream has low levels of hydrogen and alkynes and/or dienes.Type: GrantFiled: September 7, 2006Date of Patent: May 27, 2008Assignee: ExxonMobil Chemical Patents Inc.Inventors: Keith Holroyd Kuechler, David R. Lumgair, Jr.
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Patent number: 7371909Abstract: The invention relates to a process 1-olefins by telomerization of compounds having conjugated double bonds with a telogen in the presence of a noble metal telomerization catalyst, hydrogenation of the telomer and cleavage of the hydrogenated intermediate. Use of the 1-olefin as comonomer.Type: GrantFiled: October 1, 2002Date of Patent: May 13, 2008Assignee: Oxeno Olefinchemie GmbHInventors: Matthias Beller, Ralf Jackstell, Holger Klein, Dirk Roettger, Klaus-Diether Wiese, Dietrich Maschmeyer, Axel Tuchlenski, Alfred Kaizik, Silvia Santiago Fernandez
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Patent number: 7368622Abstract: Process in two steps for the preparation of 1-octene starting from butadiene which comprises: a first step (a) in which the bis-hydrodimerization of butadiene to 1,7-octadiene is effected in the presence of a catalyst based on a palladium complex containing one or more tri-substituted monodentate phosphines, in an aprotic polar solvent optionally containing an organic base; a second step (b) in which the partial catalytic hydrogenation of 1,7-octadiene to 1-octene is effected, the above process being characterized in that: (i) in the first step the aprotic polar solvent is selected from disubstituted cyclic ureas; (ii) in the second step the catalyst is selected from non supported ruthenium complexes having general formula (II): RuXmLn (II).Type: GrantFiled: October 11, 2004Date of Patent: May 6, 2008Assignee: Polimeri Europa S.p.A.Inventors: Daniele Delledonne, Franco Rivetti
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Patent number: 7368623Abstract: A method is described for the preparation of 1-octene starting from butadiene, wherein in a first step (a) the bis-hydrodimerization of butadiene to 1,7-octadiene is effected in the presence of a catalyst based on palladium containing one or more tri-substituted monodentate phosphines, in an aprotic polar solvent, in a second step (b) the partial catalytic hydrogenation of 1,7-octadiene to 1-octene is effected in the presence of a titanium compound activated with one or more metal alkyls of group 13 (selected from boron, aluminum, gallium, indium).Type: GrantFiled: October 11, 2004Date of Patent: May 6, 2008Assignee: Polimeri Europa S.p.A.Inventors: Daniele Delledonne, Franco Rivetti
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Patent number: 7358410Abstract: The present invention provides various processes for producing polypropylene from an oxygenate-contaminated propylene-containing feedstock, preferably derived from an oxygenate to olefin reaction system. In one embodiment, the process includes providing a propylene-containing stream from an oxygenate to olefin reaction system, wherein the propylene-containing stream comprises propylene and an oxygenate. The propylene in the propylene-containing stream contacts a polymerization catalyst in a polymerization zone under conditions effective to polymerize the propylene to form the polypropylene.Type: GrantFiled: March 25, 2005Date of Patent: April 15, 2008Assignee: ExxonMobil Chemical Patents Inc.Inventors: John Richard Shutt, Jeffrey L. Brinen
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Patent number: 7355086Abstract: A method for maintaining the activity of silicoaluminophosphate (SAPO) molecular sieve catalyst particles during oxygenate to olefin conversion reactions. After regeneration of SAPO catalyst particles, the regenerated particles are mixed with particles having coke on their surface in a manner that maintains their catalytic activity at a predetermined level.Type: GrantFiled: February 27, 2006Date of Patent: April 8, 2008Assignee: ExxonMobil Chemical Patents Inc.Inventors: Shun C. Fung, Richard B. Hall, Hafedh Kochkar, Karl G. Strohmaier, Nicolas P. Coute, Kenneth R. Clem
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Patent number: 7339086Abstract: A process is described for the hydrogenation of olefinic streams containing sulfurated compounds, obtained starting from hydrocarbon cuts containing isobutene (by means of selective dimerization), characterized by fractionating said streams in one or more distillation columns and hydrogenating separately the two fractions obtained. The stream at the head, with a minimum content of sulfurated compounds, is hydrogenated with conventional catalysts based on nickel or noble metals (Platinum and/or Palladium), extremely active but also very sensitive to sulfur, whereas the bottom of the column, rich in sulfurated compounds, is treated with bimetallic catalysts (for example Ni/Co and/or Ni/Mo), less active but not deactivated by sulfur.Type: GrantFiled: October 7, 2002Date of Patent: March 4, 2008Assignee: SNAMPROGETTI S.p.A.Inventors: Marco Di Gerolamo, Roberto Catani, Mario Marchionna
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Patent number: 7329788Abstract: Process for producing gasoline components. The process comprises feeding a fresh olefinic hydrocarbon feedstock to a reaction zone, in which its structure is first isomerized. The isomerized hydrocarbon is drawn out of the first reaction zone and conducted to a second reaction zone, where the isomerized hydrocarbon is dimerized. The dimerized reaction product is drawn out of the second reaction zone and separated from the flow in a separation zone. Because there are more isoolefins present in the dimerization unit feed, more isoolefin dimers useful as fuel components can be produced.Type: GrantFiled: December 22, 2003Date of Patent: February 12, 2008Assignee: Neste Oil OyjInventors: Marja Tiitta, Elina Harlin, Antti Pyhälahti
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Patent number: 7329787Abstract: A process is described for transforming an initial hydrocarbon feed containing 4 to 15 carbon atoms, limits included, into a hydrocarbon fraction having an improved octane number and a hydrocarbon fraction with a high cetane number.Type: GrantFiled: December 22, 2003Date of Patent: February 12, 2008Assignee: Institut Francais du PetroleInventors: Patrick Briot, Vincent Coupard, Alain Forestiere, Eric Llido
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Process and apparatus for the production of diesel fuels by oligomerisation of olefinic feed streams
Patent number: 7271304Abstract: This invention provides a process for the production of diesel boiling range hydrocarbons, the process including at least the steps of obtaining an olefinic feed stream from one or more hydrocarbon producing processes wherein the olefinic feed stream contains branched short chain olefins having a chain length of from three to eight carbon atoms, and contacting the feed stream with a shape selective medium pore acid zeolite catalyst in a pressurised reactor at elevated temperature so as to convert said short chain olefins to higher hydrocarbons. The invention also provides an apparatus for carrying out the process and recovering the catalyst for reuse.Type: GrantFiled: January 6, 2003Date of Patent: September 18, 2007Assignee: Sasol Technology (Pty) Ltd.Inventor: Francois Benjamin Du Toit -
Patent number: 7268265Abstract: The present invention relates to a process and apparatus for the production of light olefins comprising olefins having from 2 to 3 carbon atoms per molecule from a feedstock containing heavier olefins. An intermediate cut from a fractionation column is used as olefinic feed to an olefin cracking process preferably after undergoing selective hydrogenation of diolefins. In one embodiment, a liquid side draw from a fractionation column is selectively hydrogenated and then returned to the fractionation column from which a vapor side draw containing olefins is cracked in the olefin cracking reactor.Type: GrantFiled: June 30, 2004Date of Patent: September 11, 2007Assignee: UOP LLCInventors: Douglas G. Stewart, Joseph E. Zimmermann, Angelo P. Furfaro, Bipin V. Vora
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Patent number: 7262332Abstract: The invention relates to a process for production of propylene in particular from a C4 and/or C5 cut from steam cracking and/or catalytic cracking, preferably comprising both butenes and pentenes, said process comprising at least one oligomerization stage, followed by a stage of catalytic cracking of the oligomers formed. Preliminary oligomerization, in particular of a wide fraction of the charge, makes it possible to optimize the yields, the conversion, and the selectivity for propylene, relative to direct cracking. It also makes it possible for cracking to be carried out in a fixed, moving, or fluidized bed, optionally with co-production of oligomers for uses other than the production of propylene.Type: GrantFiled: March 6, 2003Date of Patent: August 28, 2007Assignee: Institut Francais du PetroleInventors: Jean-Luc Duplan, Jérôme Bayle, Sylvie Lacombe, Cécile Thomazeau
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Patent number: 7227047Abstract: A process is disclosed for selectively removing isobutene and butadiene from a stream, the process comprising contacting the stream with a hydrogenation catalyst to hydrogenate butadiene and an oligomerization catalyst to oligomerize isobutene.Type: GrantFiled: August 22, 2003Date of Patent: June 5, 2007Assignee: ExxonMobil Chemical Patents Inc.Inventors: Michael A Risch, John Di-Yi Ou, Cor F. Van Egmond
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Patent number: 7223895Abstract: An ethane or other hydrocarbon feedstock is steam cracked to produce an ethylene stream which is processed in an ethylene plant recovery section to separate an ethane recycle and a polymer grade or chemical grade ethylene product stream. A portion of the ethylene product stream may then be reacted by dimerization to produce a butene stream. These formed butenes and/or butenes recovered from other sources and another portion of the ethylene product stream are reacted by metathesis to produce a propylene stream which is deethanized and separated from heavier hydrocarbons to produce the propylene product. The butene product stream may also be deethanized and is separated from heavier hydrocarbons. The overhead from the metathesis section deethanizer may be recycled to the ethylene plant recovery section. The reflux for the metathesis section deethanizer may be generated from the overhead or may be a portion of the ethylene product stream.Type: GrantFiled: November 18, 2003Date of Patent: May 29, 2007Assignee: ABB Lummus Global Inc.Inventor: Charles Sumner
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Patent number: 7199163Abstract: Method for continuously removing the unreacted butene-1, and optionally other volatile components, from a polymeric solution obtained by liquid phase (co)polymerization of butene-1, the method comprising the steps of: subjecting the polymeric solution to heating and mixing conditions such that a mixture is formed consisting substantially of: (1) a polybutene melt containing entrapped butene-1 and (2) supercritical gaseous butene-1; subjecting the above mixture to a sequence of devolatilization steps operating at decreasing pressures.Type: GrantFiled: June 17, 2003Date of Patent: April 3, 2007Assignee: Basell Poliolefine Italia S.p.A.Inventors: Daniele Bigiavi, Nicolò Arich De Finetti, Gabriele Mei, Guiseppe Penzo, Massimo Covezzi, Pietro Baita, Maria Silvia Tonti
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Patent number: 7183450Abstract: This invention is to a method of oligomerizing an olefin feed stream. The olefin feed stream contains at least one C2 to C12 olefin to obtain an olefin feed stream and has from about 1,000 ppm to about 10 percent by weight oxygenated hydrocarbon. The olefin is oligomerized by contacting with an acid based oligomerization catalyst.Type: GrantFiled: July 22, 2002Date of Patent: February 27, 2007Assignee: ExxonMobil Chemical Patents Inc.Inventors: Stephen Harold Brown, Georges M. K. Mathys
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Patent number: 7154013Abstract: A process in which tetramethylethylene and neohexene are produced by starting with butene in a distillation column reactor to produce a product containing ethylene, diisobutene, tetramethylethylene, heavier oligomers. After separating these components, the separated diisobutene is further reacted with ethylene produced from the first step to produce neohexene.Type: GrantFiled: May 7, 2003Date of Patent: December 26, 2006Assignee: Catalytic Distillation TechnologiesInventor: Gary G. Podrebarac
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Patent number: 7150821Abstract: The present invention relates to an olefinic naphtha and a process for producing lower olefins from this naphtha. In the process of the present invention for producing lower olefins, preferably ethylene, at least a portion of a hydrocarbon asset is converted to synthesis gas and at least a portion of the synthesis gas is converted to an olefinic naphtha by a Fischer-Tropsch process. At least a portion of the olefinic naphtha is converted in a naphtha cracker to a product stream comprising lower olefins, and at least a portion of the lower olefins from the product stream of the naphtha cracker are recovered.Type: GrantFiled: January 31, 2003Date of Patent: December 19, 2006Assignee: Chevron U.S.A. Inc.Inventors: Dennis J. O'Rear, Guan Dao Lei
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Patent number: 7132502Abstract: The present invention is directed towards water-thinnable phosphorous-containing polymers precursors, their preparation and use. The precursors of the invention are useful in compositions for preparing coatings which impart and/or exhibit resistance to attack, for example which are useful as flame-retardant coatings.Type: GrantFiled: June 30, 2003Date of Patent: November 7, 2006Assignee: Surface Specialties, S.A.Inventors: Lieven Depuydt, Hugues Van Den Bergen, Marc Decaux, Thierry Randoux
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Patent number: 7067597Abstract: This invention concerns using an intermediate grade propylene stream as feed to a polypropylene forming reaction system. The intermediate grade propylene stream is preferably recovered form the olefin product of an oxygenate to olefins reaction process, and low in dimethyl ether content.Type: GrantFiled: February 25, 2004Date of Patent: June 27, 2006Assignee: ExxonMobil Chemical Patents Inc.Inventors: Cor F. Van Egmond, Lawrence C. Smith
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Patent number: 7041861Abstract: A process in which neohexene is produced by starting with butene in a distillation column reactor to produce a product containing ethylene, diisobutene, heavier oligomers. After separating these components, the separated diisobutene is further reacted with ethylene produced from the first step to produce neohexene.Type: GrantFiled: May 7, 2003Date of Patent: May 9, 2006Assignee: Catalytic Distillation TechnologiesInventor: Gary G. Podrebarac
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Patent number: 7012167Abstract: This invention is a process for producing diisobutylene from isobutylene. The process comprises first oligomerizing isobutylene to diisobutylene using a sulfonic acid-type ion exchange resin. The oligomerization step is followed by contacting the diisobutylene product with an adsorbent to remove sulfur impurities produced during the oligomerization step. The adsorbent is a large pore zeolite such as zeolite X and zeolite Y. Optionally, the purified diisobutylene may be hydrogenated to isooctane using a hydrogenation catalyst.Type: GrantFiled: October 8, 2003Date of Patent: March 14, 2006Assignee: Lyondell Chemical Technology, L.P.Inventor: Andrew P. Kahn
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Patent number: 6958426Abstract: The present invention relates to a process for separating the isoprene, 1,3-pentadiene and dicyclopentadiene from a C5 cuts, comprising dimerization of the cyclopentadiene and selective catalytic hydrogenation. The second extractive rectification step can be omitted, because the alkynes are removed through selective catalytic hydrogenation prior to the extractive rectification. As a result, the solvent-recovering units can be simplified, and thus the process as a whole can be optimized. Correspondingly, the investment and energy consumption, the operation cost, and finally the production cost can be substantially reduced.Type: GrantFiled: September 27, 2002Date of Patent: October 25, 2005Assignees: China Petroleum & Chemical Corporation, Beijing Research Institute of Chemical Industry SinopecInventors: Baoliang Tian, Puyang Li, Chunpeng Du, Hongfen Xu, Haiqiang Feng, Jingmin Hu, Jidong Gao, Ming Ma
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Patent number: 6949688Abstract: The present invention relates to poly ?-olefins (PAO's) which exhibit superior Noack volatility at low pour points. Mixtures of 1-decene and 1-dodecene are polymerized using an alcohol promoted BF3 in conjunction with a combination of cocatalysts. The reaction mixture is distilled to remove the unreacted monomeric and dimeric species. The resulting product is then hydrogenated to saturate the oliogomers to provide a hydrogenated product which has a viscosity of 5 cSt. This product is distilled to provide PAO's of varying viscosity grades. The 4 cSt PAO is comprised mostly of trimers and tetramers while the 6 cSt product is comprised of trimers, tetramers, and pentamers.Type: GrantFiled: October 6, 2004Date of Patent: September 27, 2005Assignee: ExxonMobil Chemical Patents Inc.Inventors: Maria Caridad B. Goze, Norman Yang
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Patent number: 6914165Abstract: Process for obtaining a “diesel cut” fuel having a CN cetane number equal to or greater than 48 and a content of aromatics lower than 0.4% by weight starting from olefins or their mixtures, characterized in that it comprises oligomerizing said olefins having from 2 to 10 carbon, distilling the stream obtained from the oligomerization, and hydrogenating the separated C12-C24 hydrocarbon stream.Type: GrantFiled: April 1, 2002Date of Patent: July 5, 2005Assignees: Snamprogetti S.p.A., Enitecnologie S.p.A.Inventors: Cristina Flego, Carlo Perego, Mario Marchionna
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Patent number: 6897345Abstract: A process is described for the production of hydrocarbons with a high octane number starting from mixtures essentially consisting of n-butane and isobutane (such as for example field butanes) comprising a skeleton isomerization section, a dehydrogenation section of paraffins, a selective hydrogenation section of butadiene, two conversion sections of olefins, in which the isobutene is firstly selectively transformed by means of dimerization and/or etherification, followed by the linear butenes by means of alkylation, in order to obtain, by joining the products of the two conversion sections, a product having excellent motoristic properties (octane number, volatility and distillation curve).Type: GrantFiled: April 23, 2003Date of Patent: May 24, 2005Assignee: Snamprogetti S.p.A.Inventors: Mario Marchionna, Marco Di Girolamo, Domenico Sanfilippo, Alberto Paggini
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Patent number: 6884914Abstract: This invention is to a method of oligomerizing an olefin feed stream. The olefin feed stream contains at least one C2 to C12 olefin to obtain an olefin feed stream and has less than 1,000 ppm by weight oxygenated hydrocarbon. The olefin is oligomerized by contacting with an acid based oligomerization catalyst.Type: GrantFiled: February 1, 2002Date of Patent: April 26, 2005Assignee: Exxon Mobil Chemical Patents Inc.Inventors: Georges M. K. Mathys, Stephen H. Brown, Hubertus Joseph Beckers, Raphael Frans Caers, John Stephen Godsmark, Luc R. M. Martens, John Richard Shutt, Eddy T. Van Driessche
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Patent number: 6875899Abstract: A method of making a higher olefin product from a C4+ fraction separated from the hydrocarbon product produced by an oxygenate to olefin reaction unit. The C4+ fraction primarily contains butenes which may be directed to a higher olefin reaction unit without removing isobutenes, butanes, and/or butadiene. The C4+ fraction is particularly well suited for the production of higher olefins because of its high olefin content, low branching number, and low contaminent levels. The invention is also directed to an olefin product composition that is produced by contacting the C4+ fraction with an oligomerization catalyst. The olefin composition is characterized by a relatively high octene content, and octene with a branching number less than 1.4.Type: GrantFiled: January 24, 2002Date of Patent: April 5, 2005Assignee: ExxonMobil Chemical Patents Inc.Inventors: Luc R.M. Martens, John Stephen Godsmark, Marcel J. Janssen, Georges M. K. Mathys, Raphael F. Caers, Hubertus J. Beckers, J. Richard Shutt, Eddy Van Driessche
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Patent number: 6864398Abstract: An integrated process for producing high value products, including for example distillate fuel, from syngas is disclosed. The integrated process of the present invention produces high value products from a Fischer Tropsch with minimal production of low value products, including methane. In a process of the present invention, syngas is reacted under low temperature Fischer-Tropsch reaction conditions to provide a hydrcarbon product stream comprising substantially waxy products. The waxy products are subjected to an olefin-selective paraffin cracking process, preferably in a Paragon reactor to form olefins. The resulting olefins are then subjected to oligomerization conditions to form iso-olefins. In the processes of the present invention, the hydrocarbon product stream from the Fischer Tropsch reaction comprises desirable low levels of methane, preferably below 10%.Type: GrantFiled: December 28, 2001Date of Patent: March 8, 2005Assignee: Chevron U.S.A. Inc.Inventor: Dennis J. O'Rear