Patents by Inventor Seth M. Washburn

Seth M. Washburn 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).

  • Publication number: 20200308085
    Abstract: This disclosure provides improved processes for converting aromatic hydrocarbons, such as benzene/toluene, alkylation, transalkylation, or isomerization. In an embodiment, a process comprises utilizing a passivated reactor to reduce deactivation of a molecular sieve catalyst. Additional measures such as the use of an auxiliary catalyst and/or an elevated reactor pressure may be used to further reduce deactivation of the molecular sieve catalyst.
    Type: Application
    Filed: March 16, 2020
    Publication date: October 1, 2020
    Inventors: Seth M. Washburn, Hsu Chiang, Umar Aslam, Wenyih Frank Lai, Doron Levin, Tan-Jen Chen
  • Publication number: 20190241485
    Abstract: Embodiments disclosed herein include a process for producing paraxylene and catalyst for use in processes for producing paraxylene. In an embodiment, the process includes contacting an aromatic hydrocarbon feed comprising benzene and/or toluene with an alkylating reagent comprising methanol and/or dimethyl ether in at least one alkylation reaction zone in the presence of an alkylation catalyst comprising a molecular sieve having a Constrain Index less than 5 and under alkylation conditions. The alkylation catalyst comprises at least one of a rare earth metal or alkaline earth metal and a binder, and a majority of the at least one rare earth metal or alkaline earth metal is deposited on the molecular sieve. In addition, the process includes producing an alkylated aromatic product comprising xylenes.
    Type: Application
    Filed: December 11, 2018
    Publication date: August 8, 2019
    Inventors: Wenyih F. Lai, Tan-Jen Chen, Seth M. Washburn
  • Publication number: 20190169087
    Abstract: A process is described for producing paraxylene, in which an aromatic hydrocarbon feedstock comprising benzene and/or toluene is contacted with an alkylating reagent comprising methanol and/or dimethyl ether in an alkylation reaction zone under alkylation conditions in the presence of an alkylation catalyst to produce an alkylated aromatic product comprising xylenes. The alkylation catalyst comprises a molecular sieve having a Constraint Index?5, and the alkylation conditions comprise a temperature less than 500° C. Paraxylene may then be recovered from the alkylated aromatic product.
    Type: Application
    Filed: February 8, 2019
    Publication date: June 6, 2019
    Inventors: Tan-Jen Chen, Seth M. Washburn
  • Patent number: 10273196
    Abstract: The invention relates to hydrocarbon dehydrocyclization to produce products such as aromatic hydrocarbon, to equipment and materials useful for dehydrocyclization, to processes for carrying out dehydrocyclization, and to the use of dehydrocyclization for, e.g., natural gas upgrading. The dehydrocyclization is carried out in a catalytic reaction zone of a reverse-flow reactor.
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: April 30, 2019
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Paul F. Keusenkothen, John S. Buchanan, John S. Coleman, Seth M. Washburn
  • Patent number: 10259765
    Abstract: Disclosed are novel processes for making cyclohexanone compositions, from a mixture comprising phenol, cyclohexanone, and cyclohexylbenzene. The process includes hydrogenation of a feed stream comprising phenol, cyclohexanone, and cyclohexylbenzene. The feed stream may be subjected to one or more pre-hydrogenation treatments, such as passing through one or more sorbents, addition of basic chemical agents, and/or addition of water, so as to improve catalyst activity, minimize undesired side reactions, and/or remove catalyst poisons from the feed stream. The feed stream may be provided to a hydrogenation reaction zone in the vapor phase, with periodic alterations to hydrogenation reaction conditions such that the feed is provided in mixed liquid and vapor phase in order to carry out liquid washing of a hydrogenation catalyst bed within the hydrogenation reaction zone.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: April 16, 2019
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Jihad M. Dakka, Ashley J. Malik, Christopher L. Becker, Jason D. Davis, Kirk C. Nadler, Jose M. Vargas, Tan-Jen Chen, Seth M. Washburn, Jörg F. W. Weber
  • Patent number: 10252968
    Abstract: Disclosed are novel processes for making cyclohexanone compositions, from a mixture comprising phenol, cyclohexanone, and cyclohexylbenzene. The process includes hydrogenation of a feed stream comprising phenol, cyclohexanone, and cyclohexylbenzene. The feed stream may be subjected to one or more pre-hydrogenation treatments, such as passing through one or more sorbents, addition of basic chemical agents, and/or addition of water, so as to improve catalyst activity, minimize undesired side reactions, and/or remove catalyst poisons from the feed stream. The feed stream may be provided to a hydrogenation reaction zone in the vapor phase, with periodic alterations to hydrogenation reaction conditions such that the feed is provided in mixed liquid and vapor phase in order to carry out liquid washing of a hydrogenation catalyst bed within the hydrogenation reaction zone.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: April 9, 2019
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Jihad M. Dakka, Ashley J. Malik, Christopher L. Becker, Jason D. Davis, Kirk C. Nadler, Jose M. Vargas, Tan-Jen Chen, Seth M. Washburn, Jörg F. W. Weber
  • Patent number: 10246383
    Abstract: A process is described for producing paraxylene, in which an aromatic hydrocarbon feedstock comprising benzene and/or toluene is contacted with an alkylating reagent comprising methanol and/or dimethyl ether in an alkylation reaction zone under alkylation conditions in the presence of an alkylation catalyst to produce an alkylated aromatic product comprising xylenes. The alkylation catalyst comprises a molecular sieve having a Constraint Index ?5, and the alkylation conditions comprise a temperature less than 500° C. Paraxylene may then be recovered from the alkylated aromatic product.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: April 2, 2019
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Tan-Jen Chen, Seth M. Washburn
  • Publication number: 20180273457
    Abstract: Disclosed are novel processes for making cyclohexanone compositions, from a mixture comprising phenol, cyclohexanone, and cyclohexylbenzene. The process includes hydrogenation of a feed stream comprising phenol, cyclohexanone, and cyclohexylbenzene. The feed stream may be subjected to one or more pre-hydrogenation treatments, such as passing through one or more sorbents, addition of basic chemical agents, and/or addition of water, so as to improve catalyst activity, minimize undesired side reactions, and/or remove catalyst poisons from the feed stream. The feed stream may be provided to a hydrogenation reaction zone in the vapor phase, with periodic alterations to hydrogenation reaction conditions such that the feed is provided in mixed liquid and vapor phase in order to carry out liquid washing of a hydrogenation catalyst bed within the hydrogenation reaction zone.
    Type: Application
    Filed: June 17, 2016
    Publication date: September 27, 2018
    Inventors: Jihad M. Dakka, Ashley J. Malik, Christopher L. Becker, Jason D. Davis, Kirk C. Nadler, Jose M. Vargas, Tan-Jen Chen, Seth M. Washburn, Jörg F.W Weber
  • Publication number: 20180208523
    Abstract: A catalyst system and processes for combined aromatization and selective hydrogen combustion of oxygenated hydrocarbons are disclosed. The catalyst system contains at least one aromatization component and at least one selective hydrogen combustion component. The process is such that the yield of hydrogen is less than the yield of hydrogen when contacting the hydrocarbons with the aromatization component alone.
    Type: Application
    Filed: March 22, 2018
    Publication date: July 26, 2018
    Applicant: ExxonMobil Chemical Patents Inc.
    Inventors: Paul F. Keusenkothen, Seth M. Washburn, Neeraj Sangar, Nikolaos Soultanidis, Mayank Shekhar
  • Publication number: 20180194705
    Abstract: Disclosed are novel processes for making cyclohexanone compositions, from a mixture comprising phenol, cyclohexanone, and cyclohexylbenzene. The process includes hydrogenation of a feed stream comprising phenol, cyclohexanone, and cyclohexylbenzene. The feed stream may be subjected to one or more pre-hydrogenation treatments, such as passing through one or more sorbents, addition of basic chemical agents, and/or addition of water, so as to improve catalyst activity, minimize undesired side reactions, and/or remove catalyst poisons from the feed stream. The feed stream may be provided to a hydrogenation reaction zone in the vapor phase, with periodic alterations to hydrogenation reaction conditions such that the feed is provided in mixed liquid and vapor phase in order to carry out liquid washing of a hydrogenation catalyst bed within the hydrogenation reaction zone.
    Type: Application
    Filed: June 17, 2016
    Publication date: July 12, 2018
    Inventors: Jihad M. Dakka, Ashley J. Malik, Christopher L. Becker, Jason D. Davis, Kirk C. Nadler, Jose M. Vargas, Tan-Jen Chen, Seth M. Washburn, Jörg F.W. Weber
  • Patent number: 9957203
    Abstract: A catalyst system and processes for combined aromatization and selective hydrogen combustion of oxygenated hydrocarbons are disclosed. The catalyst system contains at least one aromatization component and at least one selective hydrogen combustion component. The process is such that the yield of hydrogen is less than the yield of hydrogen when contacting the hydrocarbons with the aromatization component alone.
    Type: Grant
    Filed: October 7, 2015
    Date of Patent: May 1, 2018
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Paul F. Keusenkothen, Seth M. Washburn, Neeraj Sangar, Nikolaos Soultanidis, Mayank Shekhar
  • Publication number: 20180099913
    Abstract: A process is described for producing paraxylene, in which an aromatic hydrocarbon feedstock comprising benzene and/or toluene is contacted with an alkylating reagent comprising methanol and/or dimethyl ether in an alkylation reaction zone under alkylation conditions in the presence of an alkylation catalyst to produce an alkylated aromatic product comprising xylenes. The alkylation catalyst comprises a molecular sieve having a Constraint Index?5, and the alkylation conditions comprise a temperature less than 500° C. Paraxylene may then be recovered from the alkylated aromatic product.
    Type: Application
    Filed: September 12, 2017
    Publication date: April 12, 2018
    Inventors: Tan-Jen Chen, Seth M. Washburn
  • Publication number: 20170088491
    Abstract: The invention relates to hydrocarbon dehydrocyclization to produce products such as aromatic hydrocarbon, to equipment and materials useful for dehydrocyclization, to processes for carrying out dehydrocyclization, and to the use of dehydrocyclization for, e.g., natural gas upgrading. The dehydrocyclization is carried out in a catalytic reaction zone of a reverse-flow reactor.
    Type: Application
    Filed: August 18, 2016
    Publication date: March 30, 2017
    Inventors: Paul F. Keusenkothen, John S. Buchanan, John S. Coleman, Seth M. Washburn
  • Publication number: 20160318828
    Abstract: The invention relates to catalytic alkane dehydrogenation, to olefin produced by catalytic alkane dehydrogenation, and to processes, compositions, process configurations, equipment, and systems useful for carrying out catalytic alkane dehydrogenation. The catalytic alkane dehydrogenation is carried out in a substantially-isothermal reaction zone, which includes at least one active material having catalytic alkane dehydrogenation activity.
    Type: Application
    Filed: April 8, 2016
    Publication date: November 3, 2016
    Inventors: Seth M. Washburn, John S. Coleman, John S. Buchanan, Neeraj Sangar, Paul F. Keusenkothen
  • Publication number: 20160145170
    Abstract: A catalyst system and processes for combined aromatization and selective hydrogen combustion of oxygenated hydrocarbons are disclosed. The catalyst system contains at least one aromatization component and at least one selective hydrogen combustion component. The process is such that the yield of hydrogen is less than the yield of hydrogen when contacting the hydrocarbons with the aromatization component alone.
    Type: Application
    Filed: October 7, 2015
    Publication date: May 26, 2016
    Inventors: Paul F. Keusenkothen, Seth M. Washburn, Neeraj Sangar, Nikolaos Soultanidis, Mayank Shekhar