Patents by Inventor Raymond F. Drnevich

Raymond F. Drnevich 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: 20200385641
    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: August 24, 2020
    Publication date: December 10, 2020
    Inventors: Kenneth L. Burgers, Raymond F. Drnevich, Minish M. Shah, David R. Thompson
  • Patent number: 10822234
    Abstract: A system and method for oxygen transport membrane enhanced Integrated Gasifier Combined Cycle (IGCC) is provided. The oxygen transport membrane enhanced IGCC system is configured to generate electric power and optionally produce a fuel/liquid product from coal-derived synthesis gas or a mixture of coal-derived synthesis gas and natural gas derived synthesis gas.
    Type: Grant
    Filed: April 9, 2015
    Date of Patent: November 3, 2020
    Assignee: PRAXAIR TECHNOLOGY, INC.
    Inventors: Sean M. Kelly, Shrikar Chakravarti, Raymond F. Drnevich
  • Patent number: 10787615
    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: Grant
    Filed: January 28, 2014
    Date of Patent: September 29, 2020
    Assignee: PRAXAIR TECHNOLOGY, INC.
    Inventors: Kenneth L. Burgers, Raymond F. Drnevich, Minish M. Shah, David R. Thompson
  • Patent number: 10005664
    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: Grant
    Filed: November 9, 2015
    Date of Patent: June 26, 2018
    Assignee: PRAXAIR TECHNOLOGY, INC.
    Inventors: Shrikar Chakravarti, Raymond F. Drnevich, Ines C. Stuckert, Minish M. Shah
  • Patent number: 9839899
    Abstract: A method and system for producing methanol that employs an integrated oxygen transport membrane based reforming system is disclosed. The integrated oxygen transport membrane based reforming system carries out a primary reforming process, a secondary reforming process, and synthesis gas conditioning to produce synthesis gas having a desired module of between about 2.0 and 2.2 for a methanol production process thereby optimizing the efficiency and productivity of the methanol plant.
    Type: Grant
    Filed: February 15, 2016
    Date of Patent: December 12, 2017
    Assignee: PRAXAIR TECHNOLOGY, INC.
    Inventors: Ines C. Stuckert, Shrikar Chakravarti, Raymond F. Drnevich
  • Patent number: 9637432
    Abstract: A method and system for producing methanol that employs steam methane reforming (SMR) and/or autothermal (ATR) synthesis gas production system, together with a partial oxidation 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 partial oxidation 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: December 9, 2015
    Date of Patent: May 2, 2017
    Assignee: PRAXAIR TECHNOLOGY, INC.
    Inventors: Shrikar Chakravarti, Minish Shah, Raymond F. Drnevich
  • Publication number: 20170044013
    Abstract: A system and method for oxygen transport membrane enhanced Integrated Gasifier Combined Cycle (IGCC) is provided. The oxygen transport membrane enhanced IGCC system is configured to generate electric power and optionally produce a fuel/liquid product from coal-derived synthesis gas or a mixture of coal-derived synthesis gas and natural gas derived synthesis gas.
    Type: Application
    Filed: April 9, 2015
    Publication date: February 16, 2017
    Inventors: Sean M. Kelly, Shrikar Chakravarti, Raymond F. Drnevich
  • Patent number: 9556027
    Abstract: A method and system for producing hydrogen using 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 a reactively driven and catalyst containing oxygen transport membrane reactor with or without an auxiliary source of heat to support primary reforming process within the reforming reactor to first form a synthesis gas product. The auxiliary source of heat is disposed within the oxygen transport membrane based reforming system proximate to the reforming reactors and comprises an auxiliary oxygen transport membrane reactor or a ceramic burner. The synthesis gas product is further treated in a separate high temperature water gas shift reactor and optionally in a separate low temperature water gas shift reactor. Hydrogen is produced from the resulting hydrogen-enriched gas using hydrogen PSA.
    Type: Grant
    Filed: December 1, 2014
    Date of Patent: January 31, 2017
    Assignee: PRAXAIR TECHNOLOGY, INC.
    Inventors: Shrikar Chakravarti, Raymond F. Drnevich, Ines C. Stuckert, Minish M. Shah
  • Publication number: 20160176793
    Abstract: A method and system for producing methanol that employs steam methane reforming (SMR) and/or autothermal (ATR) synthesis gas production system, together with a partial oxidation 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 partial oxidation 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: December 9, 2015
    Publication date: June 23, 2016
    Inventors: SHRIKAR CHAKRAVARTI, MINISH SHAH, RAYMOND F. DRNEVICH
  • Patent number: 9365466
    Abstract: A system and method for producing a liquid hydrocarbon product from a Fischer-Tropsch process using a synthesis gas feed produced in an oxygen transport membrane based reforming reactor. The system and method involve reforming a mixed feed stream comprising natural gas, hydrogen and the Fischer-Tropsch tail gas, in a reforming reactor in the presence of steam, radiant heat from oxygen transport membrane elements and a reforming catalyst to produce a reformed synthesis gas stream comprising hydrogen, carbon monoxide, and unreformed hydrocarbon gas. The reformed synthesis gas stream is further reformed in an oxygen transport membrane based reforming reactor and conditioned to produce a synthesis gas product stream preferably having a H2/CO ratio of from about 1.7 to about 2.2. The synthesis gas product stream is then synthesized using a Fischer Tropsch process to produce the liquid hydrocarbon product and a Fischer-Tropsch tail gas.
    Type: Grant
    Filed: March 4, 2015
    Date of Patent: June 14, 2016
    Assignee: PRAXAIR TECHNOLOGY, INC.
    Inventors: Shrikar Chakravarti, Kenneth L. Burgers, Raymond F. Drnevich, Ines C. Stuckert
  • Publication number: 20160158723
    Abstract: A method and system for producing methanol that employs an integrated oxygen transport membrane based reforming system is disclosed. The integrated oxygen transport membrane based reforming system carries out a primary reforming process, a secondary reforming process, and synthesis gas conditioning to produce synthesis gas having a desired module of between about 2.0 and 2.2 for a methanol production process thereby optimizing the efficiency and productivity of the methanol plant.
    Type: Application
    Filed: February 15, 2016
    Publication date: June 9, 2016
    Inventors: Ines C. Stuckert, Shrikar Chakravarti, Raymond F. Drnevich
  • Publication number: 20160102259
    Abstract: Oxygen is added to a raw syngas stream that contains hydrogen and CO, one or more light hydrocarbons, and that may also contain tars, produced by gasification of carbonaceous feed material, while imparting heat at a rate greater than 125 BTU per pound of oxygen added, to partially oxidize light hydrocarbons and convert tars if present to lower molecular weight products.
    Type: Application
    Filed: December 18, 2015
    Publication date: April 14, 2016
    Inventors: LAWRENCE BOOL, SHRIKAR CHAKRAVARTI, STEFAN E.F. LAUX, RAYMOND F. DRNEVICH, DANTE P. BONAQUIST, DAVID R. THOMPSON
  • Patent number: 9290422
    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: Grant
    Filed: November 27, 2012
    Date of Patent: March 22, 2016
    Assignee: PRAXAIR TECHNOLOGY, INC.
    Inventors: Raymond F. Drnevich, Shrikar Chakravarti, Minish M. Shah
  • Publication number: 20160060109
    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: November 9, 2015
    Publication date: March 3, 2016
    Inventors: Shrikar Chakravarti, Raymond F. Drnevich, Ines C. Stuckert, Minish M. Shah
  • Patent number: 9212113
    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: Grant
    Filed: April 25, 2014
    Date of Patent: December 15, 2015
    Assignee: PRAXAIR TECHNOLOGY, INC.
    Inventors: Shrikar Chakravarti, Raymond F. Drnevich, Ines C. Stuckert, Minish M. Shah
  • Patent number: 9145525
    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: Grant
    Filed: June 26, 2013
    Date of Patent: September 29, 2015
    Assignee: PRAXAIR TECHNOLOGY, INC.
    Inventors: Shrikar Chakravarti, Raymond F. Drnevich, Minish M Shah
  • Publication number: 20150251967
    Abstract: A system and method for producing a liquid hydrocarbon product from a Fischer-Tropsch process using a synthesis gas feed produced in an oxygen transport membrane based reforming reactor. The system and method involve reforming a mixed feed stream comprising natural gas, hydrogen and the Fischer-Tropsch tail gas, in a reforming reactor in the presence of steam, radiant heat from oxygen transport membrane elements and a reforming catalyst to produce a reformed synthesis gas stream comprising hydrogen, carbon monoxide, and unreformed hydrocarbon gas. The reformed synthesis gas stream is further reformed in an oxygen transport membrane based reforming reactor and conditioned to produce a synthesis gas product stream preferably having a H2/CO ratio of from about 1.7 to about 2.2. The synthesis gas product stream is then synthesized using a Fischer Tropsch process to produce the liquid hydrocarbon product and a Fischer-Tropsch tail gas.
    Type: Application
    Filed: March 4, 2015
    Publication date: September 10, 2015
    Inventors: Shrikar Chakravarti, Kenneth L. Burgers, Raymond F. Drnevich, Ines C. Stuckert
  • 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: 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