Patents by Inventor Michel Molinier
Michel Molinier has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9517980Abstract: The present invention is an improved process and apparatus for producing para-xylene, particularly with respect to a process that involves the methylation of toluene and/or benzene to selectively produce para-xylene, wherein streams having differing amounts of ethylbenzene are separately treated in the recovery of para-xylene. A first hydrocarbon feed comprising xylenes and ethylbenzene is provided to a first para-xylene adsorption section, and a second hydrocarbon feed comprising xylenes and less EB than the first hydrocarbon feed is provided to a second para-xylene adsorption section. Segregating the feeds with differing ethylbenzene contents increases the overall efficiency of the adsorption of para-xylene by the adsorption units. Efficiency and energy savings may be further improved by subjecting the lower-content ethylbenzene stream to liquid phase isomerization.Type: GrantFiled: December 15, 2015Date of Patent: December 13, 2016Assignee: ExxonMobil Chemical Patents Inc.Inventors: Robert G. Tinger, Dana L. Pilliod, Michel Molinier
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Publication number: 20160318827Abstract: The present invention is an improved process and apparatus for producing para-xylene, particularly with respect to a process that involves the methylation of toluene and/or benzene to selectively produce para-xylene, wherein streams having differing amounts of ethylbenzene are separately treated in the recovery of para-xylene. A first hydrocarbon feed comprising xylenes and ethylbenzene is provided to a first para-xylene adsorption section, and a second hydrocarbon feed comprising xylenes and less EB than the first hydrocarbon feed is provided to a second para-xylene adsorption section. Segregating the feeds with differing ethylbenzene contents increases the overall efficiency of the adsorption of para-xylene by the adsorption units. Efficiency and energy savings may be further improved by subjecting the lower-content ethylbenzene stream to liquid phase isomerization.Type: ApplicationFiled: December 15, 2015Publication date: November 3, 2016Inventors: Robert G. Tinger, Dana L. Pilliod, Michel Molinier
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Patent number: 9469579Abstract: In a process for producing para-xylene, a toluene-containing stream is contacted with a methylating agent under conditions effective to convert toluene to xylenes and produce a methylated effluent stream. Para-xylene is recovered from the methylated effluent stream to produce a para-xylene depleted stream and part of the para-xylene depleted stream is contacted with a xylene isomerization catalyst under liquid phase isomerization conditions effective to produce a first isomerized stream, while part of the para-xylene depleted stream is contacted with a xylene isomerization catalyst under vapor phase isomerization conditions effective to produce a second isomerized stream. The first and second isomerized streams are then recycled to the para-xylene recovery step.Type: GrantFiled: May 20, 2016Date of Patent: October 18, 2016Assignee: ExxonMobil Chemical Patents Inc.Inventors: Michel Molinier, Jeffrey L. Andrews, Timothy P. Bender, Robert G. Tinger, Dennis J. Stanley, George J. Wagner
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Publication number: 20160264495Abstract: In a process for producing para-xylene, a toluene-containing stream is contacted with a methylating agent under conditions effective to convert toluene to xylenes and produce a methylated effluent stream. Para-xylene is recovered from the methylated effluent stream to produce a para-xylene depleted stream and part of the para-xylene depleted stream is contacted with a xylene isomerization catalyst under liquid phase isomerization conditions effective to produce a first isomerized stream, while part of the para-xylene depleted stream is contacted with a xylene isomerization catalyst under vapor phase isomerization conditions effective to produce a second isomerized stream. The first and second isomerized streams are then recycled to the para-xylene recovery step.Type: ApplicationFiled: May 20, 2016Publication date: September 15, 2016Inventors: Michel Molinier, Jeffrey L. Andrews, Timothy P. Bender, Robert G. Tinger, Dennis J. Stanley, George J. Wagner
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Publication number: 20160185686Abstract: In a process for producing para-xylene, a feed stream comprising C6+ aromatic hydrocarbons is separated into a toluene-containing stream, a C8 aromatic hydrocarbon-containing stream and a C9+ aromatic hydrocarbon-containing stream. The toluene-containing stream is contacted with a methylating agent to convert toluene to xylenes and produce a methylated effluent stream. Para-xylene is recovered from the C8 aromatic hydrocarbon-containing stream and the methylated effluent stream in a para-xylene recovery section to produce a para-xylene depleted stream, which is then contacted with a xylene isomerization catalyst under liquid phase conditions effective to isomerize xylenes in the para-xylene depleted stream and produce an isomerized stream. The C9+-containing stream with a transalkylation catalyst under conditions effective to convert C9+-aromatics to C8?-aromatics and produce a transalkylated stream, which is recycled together with the isomerized stream to the para-xylene recovery section.Type: ApplicationFiled: March 2, 2016Publication date: June 30, 2016Inventors: Michel Molinier, Jeevan S. Abichandani, Jeffrey L. Andrews, Robert G. Tinger, Dennis J. Stanley, George J. Wagner
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Publication number: 20160176787Abstract: Disclosed is a transalkylation process for making an aromatic material between a light aromatic material and a heavier aromatic material in the presence of hydrogen and a transalkylation catalyst comprising a hydrogenation component and a transalkylation component. The process comprises conducting the transalkylation reaction under conditions conducive to reducing the amount of cyclic compounds in the transalkylation reaction mixture in the beginning phase of the operation that is different from the conditions after the beginning phase. The invention is useful, e.g., in transalkylation between toluene and C9+ aromatic feed materials to produce xylenes and/or benzene.Type: ApplicationFiled: November 16, 2015Publication date: June 23, 2016Inventors: Michel Molinier, Jeffrey L. Andrews, Hari Nair
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Publication number: 20160122262Abstract: A process is provided for the isomerization of aromatic hydrocarbons including contacting an aromatic hydrocarbon feedstream with a catalyst comprising a hydrogenation metal wherein sulfur is continuously introduced after catalyst start-up for an extended period of time at a concentration of no more than 56 ppm by weight of the aromatic hydrocarbon feedstream.Type: ApplicationFiled: September 22, 2015Publication date: May 5, 2016Inventors: Chunshe Cao, Rachel M. Cook, Michel Molinier, Robert G. Tinger, Marcus L. van Nuland
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Publication number: 20160101405Abstract: In a process for producing para-xylene, a feed stream comprising C6+ aromatic hydrocarbons is separated into a C7— aromatic hydrocarbon-containing stream, a C8 aromatic hydrocarbon-containing stream, and a C9+ aromatic hydrocarbon-containing stream. The C7? aromatic hydrocarbon-containing stream is contacted with a methylating agent to convert toluene to xylenes and produce a methylated effluent stream. Ethylbenzene is removed from the C8 aromatic hydrocarbon-containing stream, para-xylene is recovered from the ethylbenzene-depleted C8 aromatic hydrocarbon-containing stream and the methylated effluent stream in a para-xylene recovery section to produce a para-xylene depleted stream, which is then contacted with a xylene isomerization catalyst under liquid phase conditions effective to isomerize xylenes in the para-xylene depleted stream and produce an isomerized stream.Type: ApplicationFiled: December 17, 2015Publication date: April 14, 2016Inventors: Robert G. Tinger, Jeffrey L. Andrews, Michel Molinier
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Patent number: 9302953Abstract: In a process for producing para-xylene, a feed stream comprising C6+ aromatic hydrocarbons is separated into a toluene-containing stream, a C8 aromatic hydrocarbon-containing stream and a C9+ aromatic hydrocarbon-containing stream. The toluene-containing stream is contacted with a methylating agent to convert toluene to xylenes and produce a methylated effluent stream. Para-xylene is recovered from the C8 aromatic hydrocarbon-containing stream and the methylated effluent stream in a para-xylene recovery section to produce a para-xylene depleted stream, which is then contacted with a xylene isomerization catalyst under liquid phase conditions effective to isomerize xylenes in the para-xylene depleted stream and produce an isomerized stream. The C9+-containing stream with a transalkylation catalyst under conditions effective to convert C9+-aromatics to C8?-aromatics and produce a transalkylated stream, which is recycled together with the isomerized stream to the para-xylene recovery section.Type: GrantFiled: June 10, 2015Date of Patent: April 5, 2016Assignee: ExxonMobil Chemicals Patents Inc.Inventors: Michel Molinier, Jeevan S. Abichandani, Jeffrey L. Andrews, Timothy P. Bender, Robert G. Tinger, Dennis J. Stanley, George J. Wagner
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Patent number: 9295970Abstract: In a process for producing para-xylene, a feed stream comprising C6+ aromatic hydrocarbons is separated into a C7? aromatic hydrocarbon-containing stream, a C8 aromatic hydrocarbon-containing stream, and a C9+ aromatic hydrocarbon-containing stream. The C7? aromatic hydrocarbon-containing stream is contacted with a methylating agent to convert toluene to xylenes and produce a methylated effluent stream. Ethylbenzene is removed from the C8 aromatic hydrocarbon-containing stream, para-xylene is recovered from the ethylbenzene-depleted C8 aromatic hydrocarbon-containing stream and the methylated effluent stream in a para-xylene recovery section to produce a para-xylene depleted stream, which is then contacted with a xylene isomerization catalyst under liquid phase conditions effective to isomerize xylenes in the para-xylene depleted stream and produce an isomerized stream.Type: GrantFiled: December 17, 2015Date of Patent: March 29, 2016Assignee: ExxonMobil Chemical Patents Inc.Inventors: Robert G. Tinger, Jeffrey L. Andrews, Michel Molinier
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Publication number: 20160046544Abstract: In a process for producing para-xylene, at least one feed comprising C6+ aromatic hydrocarbons is supplied to a dividing wall distillation column to separate the feed into a C7? aromatic hydrocarbon-containing stream, a C8 aromatic hydrocarbon-containing stream and a C9+ aromatic hydrocarbon-containing stream. At least part of the C8 aromatic hydrocarbon-containing stream is then supplied to a para-xylene recovery unit to recover para-xylene from the C8 aromatic hydrocarbon-containing stream and produce a para-xylene depleted stream. The para-xylene depleted stream is contacted with a xylene isomerization catalyst in a xylene isomerization zone under conditions effective to isomerize xylenes in the para-xylene depleted stream and produce an isomerized stream, which is then at least partially recycled to the para-xylene recovery unit.Type: ApplicationFiled: June 18, 2015Publication date: February 18, 2016Inventors: Michel Molinier, Kevin J. Knob, Dennis J. Stanley, Terri S. Vander Pol, Chunshe Cao, Xiaobo Zheng, Thierry LeFlour, Jacques Rault, Stephane Claudel, Isabell Prevost, Jerome Pigourier, Celia Fernandez
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Patent number: 9260360Abstract: The invention relates to minimizing ammonia poisoning of a catalyst and to a xylene isomerization process using said catalyst.Type: GrantFiled: November 13, 2013Date of Patent: February 16, 2016Assignee: ExxonMobil Chemical Patents Inc.Inventors: Chunshe Cao, Jeffrey L. Andrews, Michel Molinier
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Patent number: 9249068Abstract: In a process for producing para-xylene, a feed stream comprising C6+ aromatic hydrocarbons is separated into a C7? aromatic hydrocarbon-containing stream, a C8 aromatic hydrocarbon-containing stream, and a C9+ aromatic hydrocarbon-containing stream. The C7? aromatic hydrocarbon-containing stream is contacted with a methylating agent to convert toluene to xylenes and produce a methylated effluent stream. Ethylbenzene is removed from the C8 aromatic hydrocarbon-containing stream, para-xylene is recovered from the ethylbenzene-depleted C8 aromatic hydrocarbon-containing stream and the methylated effluent stream in a para-xylene recovery section to produce a para-xylene depleted stream, which is then contacted with a xylene isomerization catalyst under liquid phase conditions effective to isomerize xylenes in the para-xylene depleted stream and produce an isomerized stream.Type: GrantFiled: June 10, 2015Date of Patent: February 2, 2016Assignee: ExxonMobil Chemical Patents Inc.Inventors: Robert G. Tinger, Jeffrey L. Andrews, Michel Molinier
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Publication number: 20150376086Abstract: In a process for producing para-xylene, a feed stream comprising C6+ aromatic hydrocarbons is separated into a C7? aromatic hydrocarbon-containing stream, a C8 aromatic hydrocarbon-containing stream, and a C9+ aromatic hydrocarbon-containing stream. The C7? aromatic hydrocarbon-containing stream is contacted with a methylating agent to convert toluene to xylenes and produce a methylated effluent stream. Ethylbenzene is removed from the C8 aromatic hydrocarbon-containing stream, para-xylene is recovered from the ethylbenzene-depleted C8 aromatic hydrocarbon-containing stream and the methylated effluent stream in a para-xylene recovery section to produce a para-xylene depleted stream, which is then contacted with a xylene isomerization catalyst under liquid phase conditions effective to isomerize xylenes in the para-xylene depleted stream and produce an isomerized stream.Type: ApplicationFiled: June 10, 2015Publication date: December 31, 2015Inventors: Robert G. Tinger, Jeffrey L. Andrews, Michel Molinier
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Publication number: 20150376088Abstract: In a process for producing para-xylene, a feed stream comprising C6+ aromatic hydrocarbons is separated into a toluene-containing stream, a C8 aromatic hydrocarbon-containing stream and a C9+ aromatic hydrocarbon-containing stream. The toluene-containing stream is contacted with a methylating agent to convert toluene to xylenes and produce a methylated effluent stream. Para-xylene is recovered from the C8 aromatic hydrocarbon-containing stream and the methylated effluent stream in a para-xylene recovery section to produce a para-xylene depleted stream, which is then contacted with a xylene isomerization catalyst under liquid phase conditions effective to isomerize xylenes in the para-xylene depleted stream and produce an isomerized stream. The C9+-containing stream with a transalkylation catalyst under conditions effective to convert C9+-aromatics to C8?-aromatics and produce a transalkylated stream, which is recycled together with the isomerized stream to the para-xylene recovery section.Type: ApplicationFiled: June 10, 2015Publication date: December 31, 2015Inventors: Michel Molinier, Jeevan S. Abichandani, Jeffrey L. Andrews, Timothy P. Bender, Robert G. Tinger, Stanley J. Dennis, George J. Wagner
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Publication number: 20150376087Abstract: In a process for producing para-xylene, a toluene-containing stream is contacted with a methylating agent under conditions effective to convert toluene to xylenes and produce a methylated effluent stream. Para-xylene is recovered from the methylated effluent stream to produce a para-xylene depleted stream and part of the para-xylene depleted stream is contacted with a xylene isomerization catalyst under liquid phase isomerization conditions effective to produce a first isomerized stream, while part of the para-xylene depleted stream is contacted with a xylene isomerization catalyst under vapor phase isomerization conditions effective to produce a second isomerized stream. The first and second isomerized streams are then recycled to the para-xylene recovery step.Type: ApplicationFiled: June 10, 2015Publication date: December 31, 2015Inventors: Michel Molinier, Jeffrey L. Andrews, Timothy P. Bender, Robert G. Tinger, Dennis J. Stanley, George J. Wagner
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Publication number: 20140350316Abstract: The process concerns ethylbenzene conversion and xylene isomerization with a catalyst pretreated by sulfiding.Type: ApplicationFiled: August 11, 2014Publication date: November 27, 2014Inventors: Chunshe Cao, Jeffrey L. Andrews, Michel Molinier
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Patent number: 8835705Abstract: The process concerns ethylbenzene conversion and xylene isomerization with a catalyst pretreated by sulfiding.Type: GrantFiled: August 3, 2012Date of Patent: September 16, 2014Assignee: ExxonMobil Chemical Patents Inc.Inventors: Chunshe Cao, Jeffrey L. Andrews, Michel Molinier
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Publication number: 20140155668Abstract: The invention relates to minimizing ammonia poisoning of a catalyst and to a xylene isomerization process using said catalyst.Type: ApplicationFiled: November 13, 2013Publication date: June 5, 2014Inventors: Chunshe Cao, Jeffrey L. Andrews, Michel Molinier
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Publication number: 20130197286Abstract: The process concerns ethylbenzene conversion and xylene isomerization with a catalyst pretreated by sulfiding.Type: ApplicationFiled: August 3, 2012Publication date: August 1, 2013Inventors: Chunshe Cao, Jeffrey L. Andrews, Michel Molinier