Patents by Inventor Brien A. Stears
Brien A. Stears 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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Publication number: 20240050927Abstract: According to one or more embodiments of the present disclosure, a catalyst system useful for dehydrogenation includes from 98 vol. % to 99.95 vol. % of a catalyst and from 0.05 vol. % to 2 vol. % of a combustion additive. The catalyst may include from 1 ppmw to 150 ppmw platinum, gallium, and a support material. The combustion additive may include from 150 ppmw to 1,000 ppmw platinum, gallium, and a support material. The combustion additive may include at least 1.1 times greater platinum than the catalyst.Type: ApplicationFiled: December 15, 2021Publication date: February 15, 2024Applicant: Dow Global Technologies LLCInventors: Lin Luo, Yang Yang, Adrianus Koeken, Brien Stears, Luis Bollmann, Andrzej Malek, Brian W. Goodfellow
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Publication number: 20240051901Abstract: According to one or more embodiments of the present disclosure, a method for producing olefins includes contacting a hydrocarbon-containing feed with a catalyst in a reactor portion of a reactor system to form an olefin-containing effluent, separating at least a portion of the olefin-containing effluent from the catalyst, passing the catalyst to a catalyst-processing portion of the reactor system and processing the catalyst to produce a processed catalyst and a combustion gas, passing the processed catalyst from the catalyst-processing portion to the reactor portion, and introducing a combustion additive to the reactor system when the combustion gas comprises one or more hydrocarbons in an amount greater than 5% of an LFL of the combustion gas at a temperature and pressure of the catalyst processing portion. The catalyst may include from 1 ppmw to 150 ppmw platinum. The combustion additive may include from 150 ppmw to 1,000 ppmw platinum.Type: ApplicationFiled: December 15, 2021Publication date: February 15, 2024Applicant: Dow Global Technologies LLCInventors: Lin Luo, Yang Yang, Adrianus Koeken, Brien Stears, Luis Bollmann, Andrzej Malek, Brian W. Goodfellow
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Patent number: 11845721Abstract: A method for separating CO2 from C2 to C5 alkanes includes introducing a first stream including C2 to C5 alkanes and CO2 into a first separation zone, the first separation zone including a hydrocarbon solvent, and separating the first stream into a recycle stream and a second stream in the first separation zone. The recycle stream including CO2 and one or more of CO, H2, and CH4, and the second stream including C2 to C5 alkanes. The method further includes introducing the second stream into a second separation zone, and separating the second stream into a third stream and a fourth stream, wherein the third stream includes C2 alkanes and the fourth stream includes C3 to C5 alkanes.Type: GrantFiled: June 1, 2022Date of Patent: December 19, 2023Assignee: Dow Global Technologies LLCInventors: Barry Brent Fish, Peter E. Groenendijk, Andrzej Malek, Davy L. S. Nieskens, Brien A. Stears
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Publication number: 20230257327Abstract: According to one or more embodiments described herein, a method for dehydrogenating hydrocarbons may include passing a hydrocarbon feed comprising one or more alkanes or alkyl aromatics into a fluidized bed reactor, contacting the hydrocarbon feed with a dehydrogenation catalyst in the fluidized bed reactor to produce a dehydrogenated product and hydrogen, and contacting the hydrogen with an oxygen-rich oxygen carrier material in the fluidized bed reactor to combust the hydrogen and form an oxygen-diminished oxygen carrier material. In additional embodiments, a dual-purpose material may be utilized which has dehydrogenation catalyst and oxygen carrying functionality.Type: ApplicationFiled: April 26, 2023Publication date: August 17, 2023Applicant: Dow Global Technologies LLCInventors: Kevin Blann, Alexey Kirilin, Andrzej Malek, Victor Sussman, Matthew T. Pretz, Brien A. Stears, Barry B. Fish, Eric E. Stangland, Brian W. Goodfellow, Manish Sharma
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Patent number: 11724974Abstract: According to one or more embodiments described herein, a method for dehydrogenating hydrocarbons may include passing a hydrocarbon feed comprising one or more alkanes or alkyl aromatics into a fluidized bed reactor, contacting the hydrocarbon feed with a dehydrogenation catalyst in the fluidized bed reactor to produce a dehydrogenated product and hydrogen, and contacting the hydrogen with an oxygen-rich oxygen carrier material in the fluidized bed reactor to combust the hydrogen and form an oxygen-diminished oxygen carrier material. In additional embodiments, a dual-purpose material may be utilized which has dehydrogenation catalyst and oxygen carrying functionality.Type: GrantFiled: August 27, 2019Date of Patent: August 15, 2023Assignee: Dow Global Technologies LLCInventors: Kevin Blann, Alexey Kirilin, Andrzej Malek, Victor Sussman, Matthew T. Pretz, Brien A. Stears, Barry B. Fish, Eric E. Stangland, Brian W. Goodfellow, Manish Sharma
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Publication number: 20220289647Abstract: A method for separating CO2 from C2 to C5 alkanes includes introducing a first stream including C2 to C5 alkanes and CO2 into a first separation zone, the first separation zone including a hydrocarbon solvent, and separating the first stream into a recycle stream and a second stream in the first separation zone. The recycle stream including CO2 and one or more of CO, H2, and CH4, and the second stream including C2 to C5 alkanes. The method further includes introducing the second stream into a second separation zone, and separating the second stream into a third stream and a fourth stream, wherein the third stream includes C2 alkanes and the fourth stream includes C3 to C5 alkanes.Type: ApplicationFiled: June 1, 2022Publication date: September 15, 2022Applicant: Dow Global Technologies LLCInventors: Barry Brent Fish, Peter E. Groenendijk, Andrzej Malek, Davy L.S. Nieskens, Brien A. Stears
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Patent number: 11377403Abstract: A method for separating CO2 from C2 to C5 alkanes includes introducing a first stream including C2 to C5 alkanes and CO2 into a first separation zone, the first separation zone including a hydrocarbon solvent, and separating the first stream into a recycle stream and a second stream in the first separation zone. The recycle stream including CO2 and one or more of CO, H2, and CH4, and the second stream including C2 to C5 alkanes. The method further includes introducing the second stream into a second separation zone, and separating the second stream into a third stream and a fourth stream, wherein the third stream includes C2 alkanes and the fourth stream includes C3 to C5 alkanes.Type: GrantFiled: April 25, 2018Date of Patent: July 5, 2022Assignee: Dow Global Technologies LLCInventors: Barry Brent Fish, Peter E. Groenendijk, Andrzej Malek, Davy L. S. Nieskens, Brien A. Stears
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Patent number: 11220469Abstract: A process for converting a feed stream having carbon to C2 to C5 olefins, includes introducing a feed stream including methane and oxygen to a first reaction zone, reacting the methane and oxygen in the first reaction zone to form a first reaction zone product stream having a mixture of C2 to C5 alkanes, transporting the mixture of C2 to C5 alkanes to a second reaction zone, introducing a fresh stream of at least one of ethane and propane to the second reaction zone, converting the C2 to C5 alkanes to C2 to C5 olefins in the second reaction zone, producing one or more product streams in the second reaction zone, where a sum of the one or more product streams includes C2 to C5 olefins, and producing a recycle stream comprising hydrogen in the second reaction zone, where the recycle stream is transported to the first reaction zone.Type: GrantFiled: October 9, 2018Date of Patent: January 11, 2022Assignee: Dow Global Technologies LLCInventors: Barry B. Fish, Peter E. Groenendijk, Davy L. S. Nieskens, Andrzej Malek, Brien A. Stears
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Publication number: 20210292259Abstract: According to one or more embodiments described herein, a method for dehydrogenating hydrocarbons may include passing a hydrocarbon feed comprising one or more alkanes or alkyl aromatics into a fluidized bed reactor, contacting the hydrocarbon feed with a dehydrogenation catalyst in the fluidized bed reactor to produce a dehydrogenated product and hydrogen, and contacting the hydrogen with an oxygen-rich oxygen carrier material in the fluidized bed reactor to combust the hydrogen and form an oxygen-diminished oxygen carrier material. In additional embodiments, a dual-purpose material may be utilized which has dehydrogenation catalyst and oxygen carrying functionality.Type: ApplicationFiled: August 27, 2019Publication date: September 23, 2021Applicant: Dow Global Technologies LLCInventors: Kevin Blann, Alexey Kirilin, Andrzej Malek, Victor Sussman, Matthew T. Pretz, Brien A. Stears, Barry B. Fish, Eric E. Stangland, Brian W. Goodfellow, Manish Sharma
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Publication number: 20210198164Abstract: A process for converting a feed stream having carbon to C2 to C5 olefins, includes introducing a feed stream including methane and oxygen to a first reaction zone, reacting the methane and oxygen in the first reaction zone to form a first reaction zone product stream having a mixture of C2 to C5 alkanes, transporting the mixture of C2 to C5 alkanes to a second reaction zone, introducing a fresh stream of at least one of ethane and propane to the second reaction zone, converting the C2 to C5 alkanes to C2 to C5 olefins in the second reaction zone, producing one or more product streams in the second reaction zone, where a sum of the one or more product streams includes C2 to C5 olefins, and producing a recycle stream comprising hydrogen in the second reaction zone, where the recycle stream is transported to the first reaction zone.Type: ApplicationFiled: October 9, 2018Publication date: July 1, 2021Applicant: Dow Global Technologies LLCInventors: Barry B. Fish, Peter E. Groenendijk, Davy L.S. Nieskens, Andrzej Malek, Brien A. Stears
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Patent number: 10808999Abstract: A process for recovery of C2 and C3 components in an on-purpose propylene production system includes utilizing a packed rectifier with a countercurrent stream to strip C2 and C3 components from a combined de-ethanizer overhead lights vapor and cracked gas vapor stream.Type: GrantFiled: September 22, 2015Date of Patent: October 20, 2020Assignee: Dow Global Technologies LLCInventors: Isa K. Mbaraka, William L. Jackson, Jr., Martin A. Cogswell, Mark Siddoway, Brien A. Stears
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Patent number: 10589242Abstract: According to one or more embodiments, a fluid catalytic reactor may include a riser, a lower reactor portion, a transition portion, and a flow director. The riser may include a cross-sectional area, and the lower reactor portion may include a cross-sectional area. The transition portion may attach the riser to the lower reactor portion. The cross-sectional area of the riser may be less than the cross-sectional area of the lower reactor portion such that the transition portion is tapered inward from the lower reactor portion to the riser. The flow director may be positioned at least within an interior region of the transition portion. The flow director may include a body which affects the velocity profile of fluids moving from the lower reactor portion to the riser.Type: GrantFiled: October 25, 2017Date of Patent: March 17, 2020Assignee: Dow Global Technologies LLCInventors: Matthew T. Pretz, Mark W. Stewart, Ben J. Freireich, Madhusudhan Kodam, Brien A. Stears
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Publication number: 20200055801Abstract: A method for separating CO2 from C2 to C5 alkanes includes introducing a first stream including C2 to C5 alkanes and CO2 into a first separation zone, the first separation zone including a hydrocarbon solvent, and separating the first stream into a recycle stream and a second stream in the first separation zone. The recycle stream including CO2 and one or more of CO, H2, and CH4, and the second stream including C2 to C5 alkanes. The method further includes introducing the second stream into a second separation zone, and separating the second stream into a third stream and a fourth stream, wherein the third stream includes C2 alkanes and the fourth stream includes C3 to C5 alkanes.Type: ApplicationFiled: April 25, 2018Publication date: February 20, 2020Applicant: Dow Global Technologies LLCInventors: Barry Brent Fish, Peter E. Groenendijk, Andrzej Malek, Davy L.S. Nieskens, Brien A. Stears
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Patent number: 10507448Abstract: According to one or more embodiments of the present disclosure, a fluid catalytic reactor may be scaled-up by a method that includes one or more of constructing, operating, observing, or obtaining data related to a template fluid catalytic reactor comprising a template riser, a template lower reactor portion, and a template transition portion connecting the template riser and the template lower reactor portion. The method may further include one or more of constructing or operating a scaled-up fluid catalytic reactor based on the template fluid catalytic reactor.Type: GrantFiled: October 30, 2017Date of Patent: December 17, 2019Assignee: Dow Global Technologies LLCInventors: Matthew T. Pretz, Ben J. Freireich, Madhusudhan Kodam, Brien A. Stears
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Publication number: 20190282987Abstract: According to one or more embodiments of the present disclosure, a fluid catalytic reactor may be scaled-up by a method that includes one or more of constructing, operating, observing, or obtaining data related to a template fluid catalytic reactor comprising a template riser, a template lower reactor portion, and a template transition portion connecting the template riser and the template lower reactor portion. The method may further include one or more of constructing or operating a scaled-up fluid catalytic reactor based on the template fluid catalytic reactor.Type: ApplicationFiled: October 30, 2017Publication date: September 19, 2019Applicant: Dow Global Technologies LLCInventors: Matthew T. Pretz, Ben J. Freireich, Madhusudhan Kodam, Brien A. Stears
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Patent number: 10392319Abstract: Manage sulfur present as sulfur or a sulfur compound in a hydrocarbon feedstream while effecting dehydrogenation of hydrocarbon(s) (e.g. propane) contained in the hydrocarbon feedstream to its/their corresponding olefin (e.g. propylene where the hydrocarbon is propane) without subjecting the feedstream to desulfurization before it contacts a fluidizable dehydrogenation catalyst that is both a desulfurant and a dehydrogenation catalyst and comprises gallium and platinum on an alumina or alumina-silica catalyst support with optional alkali or alkaline earth metal such as potassium. Contact with such a catalyst yields a desulfurized crude olefin product that corresponds to the hydrocarbon and has a reduced amount of sulfur or sulfur compounds relative to the sulfur or sulfur compounds present in the hydrocarbon feedstream prior to contact with the catalyst.Type: GrantFiled: December 3, 2014Date of Patent: August 27, 2019Assignee: Dow Global Technologies LLCInventors: Matthew T. Pretz, Lin Luo, Brien A. Stears, Mark W. Stewart
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Publication number: 20190255498Abstract: According to one or more embodiments, a fluid catalytic reactor may include a riser, a lower reactor portion, a transition portion, and a flow director. The riser may include a cross-sectional area, and the lower reactor portion may include a cross-sectional area. The transition portion may attach the riser to the lower reactor portion. The cross-sectional area of the riser may be less than the cross-sectional area of the lower reactor portion such that the transition portion is tapered inward from the lower reactor portion to the riser. The flow director may be positioned at least within an interior region of the transition portion. The flow director may include a body which affects the velocity profile of fluids moving from the lower reactor portion to the riser.Type: ApplicationFiled: October 25, 2017Publication date: August 22, 2019Applicant: Dow Global Technologies LLCInventors: Matthew T. Pretz, Mark W. Stewart, Ben J. Freireich, Madhusudhan Kodam, Brien A. Stears
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Patent number: 10065905Abstract: Increase propane dehydrogenation activity of a partially deactivated dehydrogenation catalyst by heating the partially deactivated catalyst to a temperature of at least 660° C., conditioning the heated catalyst in an oxygen-containing atmosphere and, optionally, stripping molecular oxygen from the conditioned catalyst.Type: GrantFiled: October 31, 2017Date of Patent: September 4, 2018Assignee: Dow Global Technologies LLCInventors: Matthew Pretz, Lin Luo, Susan Domke, Howard W. Clark, Richard A. Pierce, Andrzej M. Malek, Mark W. Stewart, Brien A. Stears, Albert E. Schweizer, Jr., Guido Capone, Duncan P. Coffey, Isa K. Mbaraka
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Publication number: 20180057422Abstract: Increase propane dehydrogenation activity of a partially deactivated dehydrogenation catalyst by heating the partially deactivated catalyst to a temperature of at least 660° C., conditioning the heated catalyst in an oxygen-containing atmosphere and, optionally, stripping molecular oxygen from the conditioned catalyst.Type: ApplicationFiled: October 31, 2017Publication date: March 1, 2018Inventors: Matthew Pretz, Lin Luo, Susan Domke, Howard W. Clark, Richard A. Pierce, Andrzej M. Malek, Mark W. Stewart, Brien A. Stears, Albert E. Schweizer, JR., Guido Capone, Duncan P. Coffey, Isa K. Mbaraka
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Patent number: 9884314Abstract: A catalyst comprising a Group IIIA metal, a Group VIII noble metal, and an optional promoter metal, on a support selected from silica, alumina, silica-alumina compositions, rare earth modified alumina, and combinations thereof, doped with iron, a Group VIB metal, a Group VB metal, or a combination thereof, offers decreased reactivation time under air soak in comparison with otherwise identical catalysts. Reducing reactivation time may, in turn, reduce costs, both in inventory and capital.Type: GrantFiled: July 31, 2013Date of Patent: February 6, 2018Assignee: Dow Global Technologies LLCInventors: Lin Luo, Brien A. Stears