Patents by Inventor Nikolaos Soultanidis

Nikolaos Soultanidis 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: 10647640
    Abstract: Systems and methods are provided for forming para-xylene from aromatics-containing streams having reduced or minimized amounts of C2+ side chains. Reduced or minimized amounts of C2+ side chains can provide benefits for improving and/or allowing modification of transalkylation conditions, xylene isomerization conditions, or a combination thereof. Such aromatics-containing streams can be formed, for example, by conversion of methyl halide, methanol, syngas, and/or dimethyl ether to aromatics by an aromatic conversion process. The methyl halide, methanol, syngas, and/or dimethyl ether can be formed by conversion of methane.
    Type: Grant
    Filed: December 5, 2016
    Date of Patent: May 12, 2020
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Michael Salciccioli, Hari Nair, Glenn C. Wood, Nikolaos Soultanidis
  • Patent number: 10647633
    Abstract: A fluidized bed process for producing para-xylene via toluene and/or benzene methylation with methanol using a dual function catalyst system. A first catalyst accomplishes the toluene and/or benzene methylation and a second catalyst converts the by-products of the methylation reaction or unconverted methylating agent, improves the yields of the desired products, or a combination thereof. The inclusion of the second catalyst can suppress the C1-C5 non-aromatic fraction by over 50% and significantly enhance the formation of aromatics.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: May 12, 2020
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Nikolaos Soultanidis, Todd E. Detjen, Scott J. Weigel
  • Publication number: 20190039968
    Abstract: A fluidized bed process for producing para-xylene via toluene and/or benzene methylation with methanol using a dual function catalyst system. A first catalyst accomplishes the toluene and/or benzene methylation and a second catalyst converts the by-products of the methylation reaction or unconverted methylating agent, improves the yields of the desired products, or a combination thereof. The inclusion of the second catalyst can suppress the C1-C5 non-aromatic fraction by over 50% and significantly enhance the formation of aromatics.
    Type: Application
    Filed: January 27, 2017
    Publication date: February 7, 2019
    Inventors: Nikolaos Soultanidis, Todd E. Detjen, Scott J. Weigel
  • Patent number: 10196325
    Abstract: The present invention relates to a multistage process and catalyst system therefor to convert syngas to aromatics. In a first stage, syngas is converted to a C1-C4 alcohol mixture by contacting syngas with a first catalyst comprising rhodium or copper at moderate temperature. In a second stage, the C1-C4 alcohol mixture is converted into an aromatic product by contact with a second catalyst comprising a molecular sieve and at least one Group 8-14 element, the molecular sieve having a Constraint Index about 1 to 12 and a silica to alumina ratio of about 10 to 100 at effective conversion conditions. The final aromatic product is rich in benzene, toluene, and xylenes (e.g. greater than 50% aromatics on a hydrocarbon basis).
    Type: Grant
    Filed: December 10, 2015
    Date of Patent: February 5, 2019
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Nikolaos Soultanidis, Mayank Shekhar, John S. Coleman
  • Patent number: 10167361
    Abstract: A process is provided for converting a mixture of carbon monoxide and molecular hydrogen to an alcohol mixture, which is separated into a first methanol-containing stream and a second C2+ alcohol-containing stream. The first stream's methanol is reacted to produce a mixture of aromatics and aliphatics. The second stream's C2+ alcohol is converted to hydrocarbon including ethylene and propylene.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: January 1, 2019
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Nikolaos Soultanidis, James H. Beech, Jr., Gerald McGlamery, Jr., Steven E. Silverberg
  • Publication number: 20180370874
    Abstract: Systems and methods are provided for forming para-xylene from aromatics-containing streams having reduced or minimized amounts of C2+ side chains. Reduced or minimized amounts of C2+ side chains can provide benefits for improving and/or allowing modification of transalkylation conditions, xylene isomerization conditions, or a combination thereof. Such aromatics-containing streams can be formed, for example, by conversion of methyl halide, methanol, syngas, and/or dimethyl ether to aromatics by an aromatic conversion process. The methyl halide, methanol, syngas, and/or dimethyl ether can be formed by conversion of methane.
    Type: Application
    Filed: December 5, 2016
    Publication date: December 27, 2018
    Inventors: Michael Salciccioli, Hari Nair, Glenn C. Wood, Nikolaos Soultanidis
  • Patent number: 10131588
    Abstract: Carbon monoxide and molecular hydrogen are converted to an alcohol mixture, which is separated into a first methanol-containing stream and a second C2+ alcohol-containing stream. The first stream's methanol is converted into a propylene-rich product, and the second stream's C2+ alcohol is converted to ethylene and additional propylene.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: November 20, 2018
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Nikolaos Soultanidis, James H. Beech, Jr., Steven E. Silverberg
  • Patent number: 10059638
    Abstract: Processes are provided for conversion of oxygenated hydrocarbon, such as methanol and/or dimethyl ether, to aromatics, such as a para-xylene, and olefins, such as ethylene and propylene. The processes entail using a reactor having multiple reaction zones where each zone is prepared to promote desired reactions.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: August 28, 2018
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Nikolaos Soultanidis, Jeevan S. Abichandani, Mayank Shekhar
  • Patent number: 10053633
    Abstract: This disclosure relates to the production of xylenes from syngas, in which the syngas is converted to an aromatic product by reaction with a Fischer-Tropsch catalyst and an aromatization catalyst. The Fischer-Tropsch catalyst and aromatization catalyst may be different catalysts or combined into a single catalyst. The aromatic product is then subjected to selective alkylation with methanol and/or carbon monoxide and hydrogen to increase its p-xylene content.
    Type: Grant
    Filed: October 2, 2017
    Date of Patent: August 21, 2018
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: James H. Beech, Jr., Nikolaos Soultanidis, Steven E. Silverberg
  • 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
  • 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: 20180044260
    Abstract: Processes are provided for conversion of oxygenated hydrocarbon, such as methanol and/or dimethyl ether, to aromatics, such as a para-xylene, and olefins, such as ethylene and propylene. The processes entail using a reactor having multiple reaction zones where each zone is prepared to promote desired reactions.
    Type: Application
    Filed: December 7, 2015
    Publication date: February 15, 2018
    Inventors: Nikolaos Soultanidis, Jeevan s. Abichandani, Mayank Shekhar
  • Publication number: 20180023008
    Abstract: This disclosure relates to the production of xylenes from syngas, in which the syngas is converted to an aromatic product by reaction with a Fischer-Tropsch catalyst and an aromatization catalyst. The Fischer-Tropsch catalyst and aromatization catalyst may be different catalysts or combined into a single catalyst. The aromatic product is then subjected to selective alkylation with methanol and/or carbon monoxide and hydrogen to increase its p-xylene content.
    Type: Application
    Filed: October 2, 2017
    Publication date: January 25, 2018
    Inventors: James H. Beech, JR., Nikolaos Soultanidis, Steven E. Silverberg
  • Patent number: 9809756
    Abstract: The invention relates to pyrolysis tar upgrading processes, and in particular for decreasing reactor pressure drop when the upgrading includes converting pyrolysis tar in a reactor. The invention also relates to upgraded pyrolysis tar, and the use of upgraded pyrolysis tar, e.g., as a fuel oil blending component.
    Type: Grant
    Filed: April 3, 2015
    Date of Patent: November 7, 2017
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Nikolaos Soultanidis, Keith G. Reed, Teng Xu, David T. Ferrughelli, Luc R. M. Martens
  • Patent number: 9809758
    Abstract: This disclosure relates to the production of xylenes from syngas, in which the syngas is converted to an aromatic product by reaction with a Fischer-Tropsch catalyst and an aromatization catalyst. The Fischer-Tropsch catalyst and aromatization catalyst may be different catalysts or combined into a single catalyst. The aromatic product is then subjected to selective alkylation with methanol and/or carbon monoxide and hydrogen to increase its p-xylene content.
    Type: Grant
    Filed: June 29, 2015
    Date of Patent: November 7, 2017
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: James H. Beech, Jr., Nikolaos Soultanidis, Steven E. Silverberg
  • Patent number: 9790139
    Abstract: Processes for catalytically converting oxygenates to hydrocarbon products having an increased C6-C8 aromatics content therein. A first mixture comprising ?10.0 wt. % of at least one oxygenate, based on the weight of the first mixture, contacts a catalyst in a fluidized bed reactor to produce a product stream including water, one or more hydrocarbons comprising ?30.0 wt. % of aromatics, based on the weight of the hydrocarbons in the product stream, hydrogen, and one or more oxygenates. The catalyst comprises at least one molecular sieve, a binder, and at least one element selected from Groups 2-14 of the Periodic Table. At least one water-rich stream, at least one aromatic-rich hydrocarbon stream, and at least one aromatic-depleted hydrocarbon stream are separated from the product stream, and at least a portion of one of the aromatic-rich hydrocarbon stream or the aromatic-depleted hydrocarbon stream is recycled back to the reactor.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: October 17, 2017
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Nikolaos Soultanidis, Mayank Shekhar, John S. Coleman, Jeevan S. Abichandani, Stephen J. McCarthy
  • 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: 9637694
    Abstract: The invention relates to a process for upgrading pyrolysis tar, such as steam cracker tar, in the presence of a utility fluid. The utility fluid contains 2-ring and/or 3-ring aromatics and has solubility blending number (SBN)?120. The invention also relates to the upgraded pyrolysis tar and to the use of the upgraded pyrolysis tar, for example, for fuel oil blending.
    Type: Grant
    Filed: April 10, 2015
    Date of Patent: May 2, 2017
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Christopher M. Evans, Nikolaos Soultanidis, Reyyan Koc-Karabocek, David T. Ferrughelli, Teng Xu
  • Publication number: 20160207846
    Abstract: The present invention relates to a multistage process and catalyst system therefor to convert syngas to aromatics. In a first stage, syngas is converted to a C1-C4 alcohol mixture by contacting syngas with a first catalyst comprising rhodium or copper at moderate temperature. In a second stage, the C1-C4 alcohol mixture is converted into an aromatic product by contact with a second catalyst comprising a molecular sieve and at least one Group 8-14 element, the molecular sieve having a Constraint Index about 1 to 12 and a silica to alumina ratio of about 10 to 100 at effective conversion conditions. The final aromatic product is rich in benzene, toluene, and xylenes (e.g. greater than 50% aromatics on a hydrocarbon basis).
    Type: Application
    Filed: December 10, 2015
    Publication date: July 21, 2016
    Inventors: Nikolaos Soultanidis, Mayank Shekhar, John S. Coleman
  • 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