Patents by Inventor Minish M. Shah

Minish M. Shah 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: 9115045
    Abstract: A method and system for producing methanol that employs both an oxygen transport membrane (OTM) based reforming system together with a more traditional steam methane reforming (SMR) and/or autothermal (ATR) synthesis gas production system is disclosed. The dual mode system and method for producing the synthesis gas in a methanol production process optimizes the efficiency and productivity of the methanol plant by using the OTM based reforming system as an independent source of synthesis gas. The disclosed methods and systems are configurable either as a retrofit to existing methanol production facilities or as an integrated package into newly constructed methanol production facilities.
    Type: Grant
    Filed: November 15, 2013
    Date of Patent: August 25, 2015
    Assignee: PRAXAIR TECHNOLOGY, INC.
    Inventors: Shrikar Chakravarti, Minish M. Shah, Raymond Francis Drnevich, Wladimir Y. Sarmiento-Darkin, Brian R. Kromer, Sean M. Kelly
  • Publication number: 20150210936
    Abstract: The present invention relates to a method and system for treating a flow back fluid exiting a well site following stimulation of a subterranean formation. More specifically, the invention relates to processing the flow back fluid, and separating into a carbon dioxide rich stream and a carbon dioxide depleted stream, and continuing the separation until the carbon dioxide concentration in the flow back stream until the carbon dioxide concentration in the flow back gas diminishes to a point selected in a range of about 50-80 mol % in carbon dioxide concentration, after which the lower concentration carbon dioxide flow back stream continues to be separated into a carbon dioxide rich stream which is routed to waste or flare, and a hydrocarbon rich stream is formed.
    Type: Application
    Filed: January 28, 2014
    Publication date: July 30, 2015
    Inventors: Kenneth L. Burgers, Raymond F. Drnevich, Minish M. Shah, David R. Thompson
  • Publication number: 20150190776
    Abstract: A method and system for producing a synthesis gas in an oxygen transport membrane based reforming system is disclosed that carries out a primary reforming process, a secondary reforming process.
    Type: Application
    Filed: March 18, 2015
    Publication date: July 9, 2015
    Inventors: Shrikar Chakravarti, Raymond Francis Drnevich, Minish M. Shah, Ines C. Stuckert
  • Patent number: 9023245
    Abstract: A method and system for producing a synthesis gas in an oxygen transport membrane based reforming system is disclosed that carries out a primary reforming process, a secondary reforming process.
    Type: Grant
    Filed: November 13, 2013
    Date of Patent: May 5, 2015
    Assignee: Praxair Technology, Inc.
    Inventors: Shrikar Chakravarti, Raymond Francis Drnevich, Minish M. Shah, Ines C. Stuckert
  • Publication number: 20150005398
    Abstract: A process and method for producing liquid fuel product from hydrogen and carbon monoxide containing streams produced by gasifying solid carbonaceous feedstock and steam reforming of light fossil fuels. The gasifier syngas is treated to preferentially remove at least 99% of sulfur containing impurities and less than 50% of the CO2 to produce a treated gasifier syngas and a CO2 enriched gas. The treated gasifier syngas and the light fossil fuel conversion unit product gas are combined to form a mixed syngas that is converted into a liquid fuel product. The CO2 enriched gas is used in the gasification unit.
    Type: Application
    Filed: June 26, 2013
    Publication date: January 1, 2015
    Inventors: Shrikar Chakravarti, Raymond F. Drnevich, Minish M. Shah
  • Publication number: 20140323598
    Abstract: A method and system for producing a synthesis gas in an oxygen transport membrane based reforming system is disclosed that carries out a primary reforming process within a reforming reactor, and a secondary reforming process within an oxygen transport membrane reactor and in the presence of heat generated from a oxygen transport membrane reactor and an auxiliary source of heat. The auxiliary source of heat is disposed within the reactor housing proximate the reforming reactors and may include an auxiliary reactively driven oxygen transport membrane reactor or a ceramic burner.
    Type: Application
    Filed: April 25, 2014
    Publication date: October 30, 2014
    Inventors: Shrikar Chakravarti, Raymond F. Drnevich, Ines C. Stuckert, Minish M. Shah
  • Publication number: 20140319425
    Abstract: A method and system for producing a synthesis gas in an oxygen transport membrane based reforming system that utilizes a combined feed stream having a steam to carbon ratio between about 1.6 and 3.0 and a temperature between about 500° C. and 750° C. The combined feed stream is comprised a pre-reformed hydrocarbon feed, superheated steam, and a reaction product stream created by the reaction of a hydrogen containing stream reacted with the permeated oxygen at the permeate side of the oxygen transport membrane elements.
    Type: Application
    Filed: November 26, 2013
    Publication date: October 30, 2014
    Inventors: Shrikar Chakravarti, Raymond Francis Drnevich, Kenneth L. Burgers, Minish M. Shah
  • Publication number: 20140319424
    Abstract: A method and system for producing a synthesis gas in an oxygen transport membrane based reforming system is disclosed that carries out a primary reforming process, a secondary reforming process.
    Type: Application
    Filed: November 13, 2013
    Publication date: October 30, 2014
    Inventors: Shrikar Chakravarti, Raymond Francis Dmevich, Minish M. Shah, Ines C. Stuckert
  • Publication number: 20140323599
    Abstract: A method and system for producing methanol that employs both an oxygen transport membrane (OTM) based reforming system together with a more traditional steam methane reforming (SMR) and/or autothermal (ATR) synthesis gas production system is disclosed. The dual mode system and method for producing the synthesis gas in a methanol production process optimizes the efficiency and productivity of the methanol plant by using the OTM based reforming system as an independent source of synthesis gas. The disclosed methods and systems are configurable either as a retrofit to existing methanol production facilities or as an integrated package into newly constructed methanol production facilities.
    Type: Application
    Filed: November 15, 2013
    Publication date: October 30, 2014
    Inventors: Shrikar Chakravarti, Minish M. Shah, Raymond Francis Drnevich, Wladimir Y. Sarmiento-Darkin, Brian R. Kromer, Sean M. Kelly
  • Publication number: 20140148519
    Abstract: A hybrid plant and method for producing liquid fuel product from hydrogen and carbon monoxide containing streams produced by gasifying solid carbonaceous feedstock and steam reforming of light fossil fuels. When a gasification unit in the hybrid plant is operating at reduced capacity or is not operational, oxygen that would have been used in the gasification unit is diverted to a light fossil fuel conversion unit containing an autothermal reformer to increase H2-rich syngas flow to a liquid fuel production unit and maintain liquid fuel production at near nameplate capacity.
    Type: Application
    Filed: November 27, 2012
    Publication date: May 29, 2014
    Inventors: RAYMOND F. DRNEVICH, Shrikar Chakravarti, Minish M. Shah