Patents by Inventor John S. Buchanan

John S. Buchanan 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).

  • Patent number: 11203557
    Abstract: The invention relates to catalysts and their use in processes for dehydrocyclization of light paraffinic hydrocarbon feedstock to higher-value hydrocarbon, such as aromatic hydrocarbon, to dehydrocyclization catalysts useful in such processes, and to the methods of making such catalysts. One of more of the dehydrocyclization catalysts comprising a crystalline aluminosilicate zeolite having a constraint index of less than or equal to about 12, at least one Group 3 to Group 13 metal of the IUPAC Periodic Table and phosphorous.
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: December 21, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Samia Ilias, Mayank Shekhar, Paul F. Keusenkothen, John S. Buchanan
  • Patent number: 10421915
    Abstract: Systems and methods are provided for pretreatment and upgrading of crude bio oils for further processing and/or use as fuel products. Crude bio oils can be treated by one or more of flash fractionation and thermal cracking to generate fractions suitable for further processing, such as further hydroprocessing. Blending of crude bio oil fractions with mineral feeds can also be used to reduce metals contents to levels suitable for refinery processing.
    Type: Grant
    Filed: December 2, 2016
    Date of Patent: September 24, 2019
    Assignee: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Virginia M. Reiner, Rustom M. Billimoria, William G. Borghard, William E. Lewis, John S. Buchanan
  • 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: 9988325
    Abstract: The invention relates to the hydrocarbon upgrading to produce aromatic hydrocarbon, to equipment and materials useful in such upgrading, and to the use of such upgrading for, e.g., producing aromatic hydrocarbon natural gas. The upgrading can be carried out in the presence of a dehydrocyclization catalyst comprising at least one dehydrogenation component and at least one molecular sieve.
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: June 5, 2018
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Paul F. Keusenkothen, John S. Buchanan, Samia Ilias, Mayank Shekhar
  • Publication number: 20180022667
    Abstract: The invention relates to converting non-aromatic hydrocarbon in the presence of CO2 to produce aromatic hydrocarbon. CO2 methanation using molecular hydrogen produced during the aromatization increases aromatic hydrocarbon yield. The invention also relates to equipment and materials useful in such upgrading, to processes for carrying out such upgrading, and to the use of such processes for, e.g., natural gas upgrading.
    Type: Application
    Filed: September 12, 2017
    Publication date: January 25, 2018
    Inventors: John S. Buchanan, Paul F. Keusenkothen, David W. Maher, Jaime A. Valencia
  • Patent number: 9845272
    Abstract: The invention relates to the conversion of light hydrocarbon to higher-value hydrocarbon, such as aromatic hydrocarbon, to equipment and materials useful in such conversion, and to the use of such conversion for, e.g., natural gas upgrading. The conversion can be carried out in two stages, with each stage containing a dehydrocyclization catalyst comprising at least one dehydrogenation component and at least one molecular sieve.
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: December 19, 2017
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: John S. Buchanan, Samia Ilias, Mayank Shekhar, Paul F. Keusenkothen
  • Patent number: 9815749
    Abstract: The invention relates to the production of aromatic hydrocarbon by the conversion of a feed comprising saturated hydrocarbon. At least a portion of the saturated hydrocarbon is converted to olefinic hydrocarbon. Aromatic hydrocarbon is produced from at least a portion of the olefinic hydrocarbon using at least one dehydrocyclization catalyst comprising dehydrogenation and molecular sieve components.
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: November 14, 2017
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Paul F. Keusenkothen, Mohsen N. Harandi, John S. Buchanan, Mayank Shekhar
  • Patent number: 9809505
    Abstract: Methods are provided for improving the yield of aromatics during conversion of oxygenate feeds. An oxygenate feed can contain a mixture of oxygenate compounds, including one or more compounds with a hydrogen index of less than 2, so that an effective hydrogen index of the mixture of oxygenates is between about 1.4 and 1.9. Methods are also provided for converting a mixture of oxygenates with an effective hydrogen index greater than about 1 with a pyrolysis oil co-feed. The difficulties in co-processing a pyrolysis oil can be reduced or minimized by staging the introduction of pyrolysis oil into a reaction system. This can allow varying mixtures of pyrolysis oil and methanol, or another oxygenate feed, to be introduced into a reaction system at various feed entry points.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: November 7, 2017
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: John S. Buchanan, Stephen H. Brown, Lorenzo C. DeCaul, Brett T. Loveless, Rohit Vijay, Stephen J. McCarthy, Michel Daage, Mayank Shekhar
  • Publication number: 20170305810
    Abstract: Methods are provided for improving the yield of aromatics during conversion of oxygenate feeds. An oxygenate feed can contain a mixture of oxygenate compounds, including one or more compounds with a hydrogen index of less than 2, so that an effective hydrogen index of the mixture of oxygenates is between about 1.4 and 1.9. Methods are also provided for converting a mixture of oxygenates with an effective hydrogen index greater than about 1 with a pyrolysis oil co-feed. The difficulties in co-processing a pyrolysis oil can be reduced or minimized by staging the introduction of pyrolysis oil into a reaction system. This can allow varying mixtures of pyrolysis oil and methanol, or another oxygenate feed, to be introduced into a reaction system at various feed entry points.
    Type: Application
    Filed: July 11, 2017
    Publication date: October 26, 2017
    Applicant: ExxonMobil Chemical Patents Inc.
    Inventors: John S. Buchanan, Stephen H. Brown, Lorenzo C. DeCaul, Brett T. Loveless, Rohit Vijay, Stephen J. McCarthy, Michel Daage, Mayank Shekhar
  • Patent number: 9796643
    Abstract: The invention relates to converting non-aromatic hydrocarbon in the presence of CO2 to produce aromatic hydrocarbon. CO2 methanation using molecular hydrogen produced during the aromatization increases aromatic hydrocarbon yield. The invention also relates to equipment and materials useful in such upgrading, to processes for carrying out such upgrading, and to the use of such processes for, e.g., natural gas upgrading.
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: October 24, 2017
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: John S. Buchanan, Paul F. Keusenkothen, David W. Maher, Jaime A. Valencia
  • Patent number: 9777227
    Abstract: The invention relates to a utility fluid, such as a fluid containing aromatic and non-aromatic ringed molecules, useful as a diluent when hydroprocessing pyrolysis tar, such as steam cracker tar. The specified utility fluid comprises ?10.0 wt % aromatic and non-aromatic ring compounds and each of the following: (a) ?1.0 wt % of 1.0 ring class compounds; (b) ?5.0 wt % of 1.5 ring class compounds; (c) ?5.0 wt % of 2.0 ring class compounds; and (d) ?0.1 wt % of 5.0 ring class compounds. The invention also relates to methods for producing such a utility fluid and to processes for hydroprocessing pyrolysis tar.
    Type: Grant
    Filed: April 10, 2015
    Date of Patent: October 3, 2017
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Nikolaos Soultanidis, John S. Buchanan, Christopher M. Evans, David T. Ferrughelli, Luc R. M. Martens, Keith G. Reed, Frank C. Wang, Teng Xu, Cathleen Yung
  • Patent number: 9732013
    Abstract: Methods are provided for improving the yield of aromatics during conversion of oxygenate feeds. An oxygenate feed can contain a mixture of oxygenate compounds, including one or more compounds with a hydrogen index of less than 2, so that an effective hydrogen index of the mixture of oxygenates is between about 1.4 and 1.9. Methods are also provided for converting a mixture of oxygenates with an effective hydrogen index greater than about 1 with a pyrolysis oil co-feed. The difficulties in co-processing a pyrolysis oil can be reduced or minimized by staging the introduction of pyrolysis oil into a reaction system. This can allow varying mixtures of pyrolysis oil and methanol, or another oxygenate feed, to be introduced into a reaction system at various feed entry points.
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: August 15, 2017
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: John S. Buchanan, Stephen H. Brown, Lorenzo C. DeCaul, Brett T. Loveless, Rohit Vijay, Stephen J. McCarthy, Michel Daage, Mayank Shekhar
  • Publication number: 20170158967
    Abstract: Systems and methods are provided for pretreatment and upgrading of crude bio oils for further processing and/or use as fuel products. Crude bio oils can be treated by one or more of flash fractionation and thermal cracking to generate fractions suitable for further processing, such as further hydroprocessing. Blending of crude bio oil fractions with mineral feeds can also be used to reduce metals contents to levels suitable for refinery processing.
    Type: Application
    Filed: December 2, 2016
    Publication date: June 8, 2017
    Inventors: Virginia M. REINER, Rustom M. BILLIMORIA, William G. BORGHARD, William E. LEWIS, John S. BUCHANAN
  • Publication number: 20170144947
    Abstract: The invention relates to the production of aromatic hydrocarbon by the conversion of a feed comprising saturated hydrocarbon. At least a portion of the saturated hydrocarbon is converted to olefinic hydrocarbon. Aromatic hydrocarbon is produced from at least a portion of the olefinic hydrocarbon using at least one dehydrocyclization catalyst comprising dehydrogenation and molecular sieve components.
    Type: Application
    Filed: August 18, 2016
    Publication date: May 25, 2017
    Inventors: Paul F. Keusenkothen, Mohsen N. Harandi, John S. Buchanan, Mayank Shekhar
  • Publication number: 20170088487
    Abstract: The invention relates to the conversion of light hydrocarbon to higher-value hydrocarbon, such as aromatic hydrocarbon, to equipment and materials useful in such conversion, and to the use of such conversion for, e.g., natural gas upgrading. The conversion can be carried out in two stages, with each stage containing a dehydrocyclization catalyst comprising at least one dehydrogenation component and at least one molecular sieve.
    Type: Application
    Filed: August 18, 2016
    Publication date: March 30, 2017
    Inventors: John S. Buchanan, Samia Ilias, Mayank Shekhar, Paul F. Keusenkothen
  • 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: 20170088492
    Abstract: The invention relates to the hydrocarbon upgrading to produce aromatic hydrocarbon, to equipment and materials useful in such upgrading, and to the use of such upgrading for, e.g., producing aromatic hydrocarbon natural gas. The upgrading can be carried out in the presence of a dehydrocyclization catalyst comprising at least one dehydrogenation component and at least one molecular sieve.
    Type: Application
    Filed: August 18, 2016
    Publication date: March 30, 2017
    Inventors: Paul F. Keusenkothen, John S. Buchanan, Samia Ilias, Mayank Shekhar
  • Publication number: 20170087540
    Abstract: The invention relates to catalysts and their use in processes for dehydrocyclization of light paraffinic hydrocarbon feedstock to higher-value hydrocarbon, such as aromatic hydrocarbon, to dehydrocyclization catalysts useful in such processes, and to the methods of making such catalysts. One of more of the dehydrocyclization catalysts comprising a crystalline aluminosilicate zeolite having a constraint index of less than or equal to about 12, at least one Group 3 to Group 13 metal of the IUPAC Periodic Table and phosphorous.
    Type: Application
    Filed: August 18, 2016
    Publication date: March 30, 2017
    Inventors: Samia Ilias, Mayank Shekhar, Paul F. Keusenkothen, John S. Buchanan
  • Publication number: 20170088486
    Abstract: The invention relates to converting non-aromatic hydrocarbon in the presence of CO2 to produce aromatic hydrocarbon. CO2 methanation using molecular hydrogen produced during the aromatization increases aromatic hydrocarbon yield. The invention also relates to equipment and materials useful in such upgrading, to processes for carrying out such upgrading, and to the use of such processes for, e.g., natural gas upgrading.
    Type: Application
    Filed: August 18, 2016
    Publication date: March 30, 2017
    Inventors: John S. Buchanan, Paul F. Keusenkothen, David W. Maher, Jaime A. Valencia
  • 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