Patents by Inventor Clifford A. Maat
Clifford A. Maat 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: 10544071Abstract: The process to recover heat in oxidative dehydrogenation of butene to butadiene is presented. The process utilizes heat recovered in oxidative dehydrogenation of butene to butadiene to generate steam. The process utilizes the circulated water stream generated in oxidative dehydrogenation of butene to butadiene for steam generation. A feedstream comprising butene is mixed with steam and preheated air at the inlet of the oxidative dehydrogenation reactor.Type: GrantFiled: May 2, 2018Date of Patent: January 28, 2020Assignees: UOP LLC, TPC Group LLCInventors: John J. Senetar, Joseph G. Duff, Jillian M. Horn, Clifford A. Maat, Michael O. Nutt
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Patent number: 10538466Abstract: A process is presented for the production of butadienes. The process includes the separation of oxygenates from the product stream from an oxidative dehydrogenation reactor. The process includes quenching the product stream and solvent and oxygenates from the product stream. The oxygenates are stripped from the solvent with an inert gas to reduce the energy consumption of the process, and the solvent is recycled and reused in the process.Type: GrantFiled: May 2, 2018Date of Patent: January 21, 2020Assignees: UOP LLC, TPC Group, LLCInventors: John J. Senetar, Jeannie M. Blommel, Charles P. Luebke, Dana K. Sullivan, Joseph G. Duff, Jillian M. Horn, Clifford A. Maat, Michael O. Nutt
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Patent number: 10155704Abstract: Processes and apparatuses for the production of butadienes are provided. In an embodiment, a process for production of butadienes includes passing a reactor feed stream comprising a hydrocarbon stream comprising butene, a steam stream and a oxygen rich stream to a dehydrogenation reactor. The reactor feed stream is oxidatively dehydrogenated in the dehydrogenation reactor in presence of an oxidative dehydrogenation catalyst to provide an effluent stream comprising butadiene. The effluent stream is cooled in a quench tower to provide a cooled effluent stream and a bottoms water stream. The cooled effluent stream is passed to an aldehyde scrubber to provide a scrubbed effluent stream and a spent water stream comprising aldehydes. A first portion of the bottoms water stream is passed from the quench tower to the aldehyde scrubber.Type: GrantFiled: October 20, 2017Date of Patent: December 18, 2018Assignees: UOP LLC, TPC Group, LLCInventors: Jeannie Mee Blommel, Charles P. Luebke, Clifford A. Maat
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Publication number: 20180258015Abstract: A process is presented for the production of butadienes. The process includes the separation of oxygenates from the product stream from an oxidative dehydrogenation reactor. The process includes quenching the product stream and solvent and oxygenates from the product stream. The oxygenates are stripped from the solvent with an inert gas to reduce the energy consumption of the process, and the solvent is recycled and reused in the process.Type: ApplicationFiled: May 2, 2018Publication date: September 13, 2018Inventors: John J. Senetar, Jeannie M. Blommel, Charles P. Luebke, Dana K. Sullivan, Joseph G. Duff, Jillian M. Horn, Clifford A. Maat, Michael O. Nutt
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Publication number: 20180251412Abstract: The process to recover heat in oxidative dehydrogenation of butene to butadiene is presented. The process utilizes heat recovered in oxidative dehydrogenation of butene to butadiene to generate steam. The process utilizes the circulated water stream generated in oxidative dehydrogenation of butene to butadiene for steam generation. A feedstream comprising butene is mixed with steam and preheated air at the inlet of the oxidative dehydrogenation reactor.Type: ApplicationFiled: May 2, 2018Publication date: September 6, 2018Inventors: John J. Senetar, Joseph G. Duff, Jillian M. Horn, Clifford A. Maat, Michael O. Nutt
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Patent number: 10035741Abstract: A method of oxidatively dehydrogenating a n-butenes to butadiene includes oxidatively dehydrogenating dehydrogenation reactant in a first adiabatic, catalytic reaction zone to provide a first-stage effluent stream enriched in butadiene at a first-stage effluent temperature above the first-stage inlet temperature, cooling the first-stage effluent stream in a first heat transfer zone to a second-stage inlet temperature lower than said first-stage effluent temperature to provide a second gaseous feed stream comprising superheated steam, n-butene and butadiene, wherein the second stage inlet temperature is lower than said first stage effluent temperature and oxidatively dehydrogenating n-butene in the second stream to provide a product stream further enriched in butadiene at a second stage effluent temperature above said second-stage inlet temperature. The first reaction zone temperature rise and the second reaction zone temperature rise are at least 200° F. (111° C.Type: GrantFiled: August 29, 2016Date of Patent: July 31, 2018Assignee: TPC Group LLCInventors: Jillian M. Horn, Joseph G. Duff, Clifford A. Maat, Robert P. Adams, John J. Senetar
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Patent number: 9902669Abstract: Oxidative dehydrogenation includes: (a) providing a gaseous feed stream to a catalytic reactor, the feed stream comprising a dehydrogenation reactant, oxygen, superheated steam, hydrocarbon moderator gas and optionally nitrogen, wherein the molar ratio of moderator gas to oxygen in feed stream is typically from 4:1 to 1:1 and the molar ratio of oxygen to nitrogen in the feed stream is at least 2; (b) oxidatively dehydrogenating the reactant in the reactor to provide a dehydrogenated product enriched effluent product stream; and (c) recovering dehydrogenated product from the effluent product stream. One preferred embodiment is a process for making butadiene including dimerizing ethylene to n-butene in a homogeneous reaction medium to provide a hydrocarbonaceous n-butene rich feed stream and oxidatively dehydrogenating the n-butene so formed.Type: GrantFiled: March 7, 2014Date of Patent: February 27, 2018Assignee: TPC GROUP LLCInventors: Liana Caciula, Clifford A. Maat, Mark P. Kaminsky, Michael O. Nutt, Jillian M. Horn, Joseph G. Duff
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Publication number: 20180037523Abstract: Processes and apparatuses for the production of butadienes are provided. In an embodiment, a process for production of butadienes includes passing a reactor feed stream comprising a hydrocarbon stream comprising butene, a steam stream and a oxygen rich stream to a dehydrogenation reactor. The reactor feed stream is oxidatively dehydrogenated in the dehydrogenation reactor in presence of an oxidative dehydrogenation catalyst to provide an effluent stream comprising butadiene. The effluent stream is cooled in a quench tower to provide a cooled effluent stream and a bottoms water stream. The cooled effluent stream is passed to an aldehyde scrubber to provide a scrubbed effluent stream and a spent water stream comprising aldehydes. A first portion of the bottoms water stream is passed from the quench tower to the aldehyde scrubber.Type: ApplicationFiled: October 20, 2017Publication date: February 8, 2018Inventors: Jeannie Mee Blommel, Charles P. Luebke, Clifford A. Maat
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Publication number: 20160368840Abstract: A method of oxidatively dehydrogenating a n-butenes to butadiene includes oxidatively dehydrogenating dehydrogenation reactant in a first adiabatic, catalytic reaction zone to provide a first-stage effluent stream enriched in butadiene at a first-stage effluent temperature above the first-stage inlet temperature, cooling the first-stage effluent stream in a first heat transfer zone to a second-stage inlet temperature lower than said first-stage effluent temperature to provide a second gaseous feed stream comprising superheated steam, n-butene and butadiene, wherein the second stage inlet temperature is lower than said first stage effluent temperature and oxidatively dehydrogenating n-butene in the second stream to provide a product stream further enriched in butadiene at a second stage effluent temperature above said second-stage inlet temperature. The first reaction zone temperature rise and the second reaction zone temperature rise are at least 200° F. (111° C.Type: ApplicationFiled: August 29, 2016Publication date: December 22, 2016Inventors: Jillian M. Horn, Joseph G. Duff, Clifford A. Maat, Robert P. Adams, John J. Senetar
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Patent number: 9505682Abstract: A method of producing butadiene includes: (1) dimerizing ethylene to butene followed by (2) oxidatively dehydrogenating the butene to butadiene and (3) recovering the butadiene by (i) absorbing the product with a hydrocarbon absorber oil and (ii) stripping a crude product stream from the absorber oil. The absorber oil is selected so as to be effective to sequester ethylene dimerization-derived impurities from the system.Type: GrantFiled: July 7, 2014Date of Patent: November 29, 2016Assignee: TPC GROUP LLCInventors: Joseph G. Duff, Clifford A. Maat, Michael O. Nutt, Mark P Kaminsky
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Publication number: 20160002126Abstract: Oxidative dehydrogenation includes: (a) providing a gaseous feed stream to a catalytic reactor, the feed stream comprising a dehydrogenation reactant, oxygen, superheated steam, hydrocarbon moderator gas and optionally nitrogen, wherein the molar ratio of moderator gas to oxygen in feed stream is typically from 4:1 to 1:1 and the molar ratio of oxygen to nitrogen in the feed stream is at least 2; (b) oxidatively dehydrogenating the reactant in the reactor to provide a dehydrogenated product enriched effluent product stream; and (c) recovering dehydrogenated product from the effluent product stream. One preferred embodiment is a process for making butadiene including dimerizing ethylene to n-butene in a homogeneous reaction medium to provide a hydrocarbonaceous n-butene rich feed stream and oxidatively dehydrogenating the n-butene so formed.Type: ApplicationFiled: March 7, 2014Publication date: January 7, 2016Applicant: TPC Group LLCInventors: Liana Caciula, Clifford A. Maat, Mark P. Kaminsky, Michael O. Nutt, Jillian M. Horn, Joseph G. Duff
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Publication number: 20150018589Abstract: A method of producing butadiene includes: (1) dimerizing ethylene to butene followed by (2) oxidatively dehydrogenating the butene to butadiene and (3) recovering the butadiene by (i) absorbing the product with a hydrocarbon absorber oil and (ii) stripping a crude product stream from the absorber oil. The absorber oil is selected so as to be effective to sequester ethylene dimerization-derived impurities from the system.Type: ApplicationFiled: July 7, 2014Publication date: January 15, 2015Inventors: Joseph G. Duff, Clifford A. Maat, Michael O. Nutt, Mark P. Kaminsky