Patents by Inventor John W. Viets

John W. Viets 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: 9102530
    Abstract: Systems and methods for hydrogen production with carbon capture are provided. A hydrogen containing stream can be divided so that a portion of the stream is processed for separation of CO2. A hydrogen enriched stream formed during separation of CO2 and another portion of the hydrogen containing stream can be processed in a cycling adsorber unit to form a hydrogen product stream. Optionally, the cycling adsorber unit can be operated to form a plurality of tail gas streams. The hydrogen containing stream can be a reformed hydrocarbon stream and/or an input stream previously exposed to a water gas shift catalyst. Optionally, a portion of the reformed hydrocarbon stream can be a reformed biocomponent stream.
    Type: Grant
    Filed: September 6, 2013
    Date of Patent: August 11, 2015
    Assignee: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Narasimhan Sundaram, John W. Viets
  • Publication number: 20140010753
    Abstract: Systems and methods for hydrogen production with carbon capture are provided. A hydrogen containing stream can be divided so that a portion of the stream is processed for separation of CO2. A hydrogen enriched stream formed during separation of CO2 and another portion of the hydrogen containing stream can be processed in a cycling adsorber unit to form a hydrogen product stream. Optionally, the cycling adsorber unit can be operated to form a plurality of tail gas streams. The hydrogen containing stream can be a reformed hydrocarbon stream and/or an input stream previously exposed to a water gas shift catalyst. Optionally, a portion of the reformed hydrocarbon stream can be a reformed biocomponent stream.
    Type: Application
    Filed: September 6, 2013
    Publication date: January 9, 2014
    Applicant: ExxonMobil Research and Engineering Company
    Inventors: Narasimhan Sundaram, John W. Viets
  • Patent number: 8557218
    Abstract: Systems and methods for hydrogen production with carbon capture are provided. A hydrogen containing stream can be divided so that a portion of the stream is processed for separation of CO2. A hydrogen enriched stream formed during separation of CO2 and another portion of the hydrogen containing stream can be processed in a cycling adsorber unit to form a hydrogen product stream. Optionally, the cycling adsorber unit can be operated to form a plurality of tail gas streams. The hydrogen containing stream can be a reformed hydrocarbon stream and/or an input stream previously exposed to a water gas shift catalyst. Optionally, a portion of the reformed hydrocarbon stream can be a reformed biocomponent stream.
    Type: Grant
    Filed: May 10, 2012
    Date of Patent: October 15, 2013
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Narasimhan Sundaram, John W. Viets
  • Patent number: 8512443
    Abstract: Hydrogen can be recovered in a refinery network using a combination of a cycling adsorber unit and a membrane separation unit. A membrane separation unit can be used to generate at least a portion of the purge hydrogen stream for the cycling adsorber unit. This can reduce the portion of the hydrogen product stream from the cycling adsorber unit required for regeneration of the adsorbent.
    Type: Grant
    Filed: January 25, 2011
    Date of Patent: August 20, 2013
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Narasimhan Sundaram, John W. Viets
  • Publication number: 20120288439
    Abstract: Systems and methods for hydrogen production with carbon capture are provided. A hydrogen containing stream can be divided so that a portion of the stream is processed for separation of CO2. A hydrogen enriched stream formed during separation of CO2 and another portion of the hydrogen containing stream can be processed in a cycling adsorber unit to form a hydrogen product stream. Optionally, the cycling adsorber unit can be operated to form a plurality of tail gas streams. The hydrogen containing stream can be a reformed hydrocarbon stream and/or an input stream previously exposed to a water gas shift catalyst. Optionally, a portion of the reformed hydrocarbon stream can be a reformed biocomponent stream.
    Type: Application
    Filed: May 10, 2012
    Publication date: November 15, 2012
    Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Narasimhan Sundaram, John W. Viets
  • Patent number: 8187456
    Abstract: An improved process for hydrocracking heavy petroleum feedstocks wherein hydrogen-containing streams associated with a hydrocracker are subjected to rapid cycle pressure swing adsorption having a cycle time of less than 30 S.
    Type: Grant
    Filed: January 23, 2006
    Date of Patent: May 29, 2012
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: John W. Viets, Narasimhan Sundaram, Bal K. Kaul, David L. Stern
  • Publication number: 20110185898
    Abstract: Hydrogen can be recovered in a refinery network using a combination of a cycling adsorber unit and a membrane separation unit. A membrane separation unit can be used to generate at least a portion of the purge hydrogen stream for the cycling adsorber unit. This can reduce the portion of the hydrogen product stream from the cycling adsorber unit required for regeneration of the adsorbent.
    Type: Application
    Filed: January 25, 2011
    Publication date: August 4, 2011
    Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: NARASIMHAN SUNDARAM, JOHN W. VIETS
  • Publication number: 20110100873
    Abstract: An improved process for hydrocracking heavy petroleum feedstocks wherein hydrogen-containing streams associated with a hydrocracker are subjected to rapid cycle pressure swing adsorption having a cycle time of less than 30 S.
    Type: Application
    Filed: January 23, 2006
    Publication date: May 5, 2011
    Inventors: John W. Viets, Narasimhan Sundaram, Bal K. Kaul, David L. Stern
  • Publication number: 20090071332
    Abstract: The use of rapid cycle pressure swing adsorption having a cycle time of less than 30 s for increasing the hydrogen concentration in hydrogen-containing steams, from a hydrogen source, such as a stream reforming unit.
    Type: Application
    Filed: January 23, 2006
    Publication date: March 19, 2009
    Inventors: Bal K. Kaul, John W. Viets, Mohsen N. Harandi, Julian A. Wolfenbarger, John Di-Yi Ou, David Stern
  • Publication number: 20040129605
    Abstract: A method for converting a fixed-bed catalytic reformer unit to a moving-bed unit. The fixed bed reactor is converted to a moving bed reactor that has continuous or intermittent catalyst feeding facilities to allow continuous or intermittent addition of fresh or regenerated catalyst to the catalyst inlet of the moving-bed reactor and continuous or intermittent removal of spent catalyst from the catalyst outlet of the moving-bed reactor. The spent catalyst removed from the reactor is regenerated in a non-integrated regenerator which may be an offsite regenerator, a centrally located on-site regenerator which serves several reforming units or a regenerator shared with a second moving bed unit. The moving-bed reactor, the catalyst feeding facilities and the catalyst recovery facilities are operatively connected between themselves and to existing facilities from the fixed bed unit, such as piping, compression and reformer charge handling and heating.
    Type: Application
    Filed: October 22, 2003
    Publication date: July 8, 2004
    Inventors: Stuart S. Goldstein, John H. Thurtell, John W. Viets, Tomas R. Melli, Jason R. Vollbracht