Patents by Inventor Dennis J. Stanley
Dennis J. Stanley 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: 10077220Abstract: 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: GrantFiled: June 5, 2017Date of Patent: September 18, 2018Assignee: ExxonMobil Chemical Patents Inc.Inventors: Michel Molinier, Kevin J. Knob, Dennis J. Stanley, Terri S. Vander Pol, Chunshe J. Cao, Xiaobo Zheng, Thierry LeFlour, Jacques Rault, Stephane Claudel, Isabelle Prevost, Jerome Pigourier, Celia Fernandez
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Publication number: 20170275218Abstract: 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 5, 2017Publication date: September 28, 2017Applicant: ExxonMobil Chemical Patents Inc.Inventors: Michel Molinier, Kevin J. Knob, Dennis J. Stanley, Terri S. Vander Pol, Chunshe J. Cao, Xiaobo Zheng, Thierry LeFlour, Jacques Rault, Stephane Claudel, Isabelle Prevost, Jerome Pigourier, Celia Fernandez
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Patent number: 9738573Abstract: 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: March 2, 2016Date of Patent: August 22, 2017Assignee: ExxonMobil Chemical Patents Inc.Inventors: Michel Molinier, Jeevan S. Abichandani, Jeffrey L. Andrews, Robert G. Tinger, Dennis J. Stanley, George J. Wagner
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Patent number: 9708233Abstract: 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: GrantFiled: June 18, 2015Date of Patent: July 18, 2017Assignee: ExxonMobil Chemical Patents Inc.Inventors: 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: 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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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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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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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