Patents by Inventor Pat A. Han

Pat A. Han 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).

  • Process for the production of urea formaldehyde concentrate
    Patent number: 11873268
    Abstract: Parallel co-production process for the production of methanol and urea product from a hydrocarbon containing feed-stock by means of primary and secondary reforming, intermediary methanol and ammonia formation and conversion of the ammonia to urea product and catalytic oxidation of methanol to formaldehyde.
    Type: Grant
    Filed: March 5, 2020
    Date of Patent: January 16, 2024
    Assignee: Topsoe A/S
    Inventors: Marcus Symreng, Pat A. Han
  • Method for the preparation of ammonia synthesis gas
    Patent number: 11840448
    Abstract: Method for the preparation of ammonia synthesis gas based on a combination of autothermal reforming and electrolysis of water.
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: December 12, 2023
    Assignee: Topsoe A/S
    Inventors: Pat A. Han, Annette E. Krøll Jensen
  • METHOD FOR CRACKING AMMONIA
    Publication number: 20230383420
    Abstract: The present invention refers to a method for cracking ammonia, producing hydrogen and generating electrical power including electrolysis of water in feed ammonia, evaporation, pre-heating and cracking of ammonia, using ammonia synthesis catalysts at low temperatures. A method for cracking ammonia including a) electrolysis of water in feed ammonia, wherein feed ammonia includes make-up ammonia; b) evaporation; c) cracking; wherein cracking of ammonia takes place between 300-700° C., using ammonia synthesis catalysts.
    Type: Application
    Filed: November 3, 2021
    Publication date: November 30, 2023
    Applicant: TOPSOE A/S
    Inventors: Poul Erik HØJLUND NIELSEN, Pat A. HAN, John BØGILD HANSEN
  • Co-production of methanol and ammonia
    Patent number: 11767227
    Abstract: A plant for the co-production of methanol and ammonia from a hydrocarbon feed without venting to the atmosphere carbon dioxide captured from the methanol or ammonia synthesis gas and without using expensive air separation units and water gas shift.
    Type: Grant
    Filed: August 26, 2021
    Date of Patent: September 26, 2023
    Assignee: Topsoe A/S
    Inventors: Pat A. Han, Mitra Heidarpanah
  • Co-production of methanol, ammonia and urea
    Patent number: 11767226
    Abstract: A process and plant for the co-production of methanol and ammonia together with urea production from a hydrocarbon feed without venting to the atmosphere carbon dioxide captured from the methanol or ammonia synthesis gas and without using expensive air separation units and water gas shift. Carbon dioxide is removed from flue gas from reforming section and used to convert partially or fully all ammonia into urea.
    Type: Grant
    Filed: August 23, 2021
    Date of Patent: September 26, 2023
    Assignee: Topsoe A/S
    Inventors: Pat A. Han, Mitra Heidarpanah
  • METHOD FOR IMPROVING EFFICIENCY OF AN AMMONIA SYNTHESIS GAS PLANT
    Publication number: 20230257275
    Abstract: A method for improving efficiency of an existing ammonia synthesis gas plant or a new ammonia synthesis gas plant by establishing a combination of secondary steam reforming using oxygen from electrolysis of water for the production of ammonia synthesis gas.
    Type: Application
    Filed: April 3, 2023
    Publication date: August 17, 2023
    Inventors: Pat A. Han, Annette E. Krøll Jensen
  • METHOD FOR THE CONTROL OF PRESSURE IN A LOOP FOR THE PREPARATION OF AMMONIA OR METHANOL
    Publication number: 20230202853
    Abstract: A method for the control of pressure in a loop for the preparation of ammonia or methanol by using an anti-surge control valve of a compressor and/or a compressor flow regulation valve for the recirculation of loop recirculation gas at variating flow supply of fresh synthesis gas.
    Type: Application
    Filed: November 14, 2022
    Publication date: June 29, 2023
    Applicant: Topsoe A/S
    Inventors: Christian Henrik Speth, Michael Hultqvist, Pat A. Han
  • METHOD FOR THE CONTROL OF PRESSURE IN A LOOP FOR THE PREPARATION OF AMMONIA OR METHANOL
    Publication number: 20230137755
    Abstract: Method for the control of pressure in a loop for the preparation of ammonia or methanol by means of an anti-surge control valve of a compressor and/or a compressor flow regulation valve for the recirculation of loop recirculation gas at variating flow supply of fresh synthesis gas.
    Type: Application
    Filed: May 14, 2021
    Publication date: May 4, 2023
    Inventors: Christian Henrik Speth, Michael Hultqvist, Pat A Han
  • METHOD FOR THE PREPARATION OF SYNTHESIS GAS
    Publication number: 20230109188
    Abstract: Method for the preparation of synthesis gas combining electrolysis of water, tubular steam reforming and autothermal reforming of a hydrocarbon feed stock in parallel.
    Type: Application
    Filed: February 24, 2021
    Publication date: April 6, 2023
    Applicant: Topsoe A/S
    Inventors: Emil Andreas Tjärnehov, Pat A. Han
  • CO-PRODUCTION OF METHANOL, AMMONIA AND UREA
    Publication number: 20230073089
    Abstract: Sequential and once-through (single pass) process for the co-production of methanol and ammonia and conversion of at least a part of ammonia to urea by reaction of the ammonia with carbon dioxide collected from a primary reformer flue gas together with carbon dioxide separated from reformed gas in a carbon dioxide removal stage.
    Type: Application
    Filed: February 24, 2021
    Publication date: March 9, 2023
    Applicant: Topsoe A/S
    Inventors: Emil Andreas Tjärnehov, Pat A. Han
  • Method for the preparation of ammonia synthesis gas
    Patent number: 11370658
    Abstract: Method for the preparation of ammonia synthesis gas by a combination of ATR or secondary reforming process using oxygen from an air separation unit and electrolysis of water for the production of ammonia synthesis gas.
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: June 28, 2022
    Assignee: Topsoe A/S
    Inventors: Pat A. Han, Annette E. Krøll Jensen
  • Method for the preparation of synthesis gas
    Patent number: 11370660
    Abstract: Method for the preparation of synthesis gas based on a combination of the ATR process or partial oxidation of hydrocarbon fee stock using oxygen from the electrolysis of water and an air separation unit to produce the synthesis gas.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: June 28, 2022
    Assignee: Topsoe A/S
    Inventors: Kim Aasberg-Petersen, Pat A. Han
  • PROCESS FOR THE PRODUCTION OF UREA FORMALDEHYDE CONCENTRATE
    Publication number: 20220048854
    Abstract: Parallel co-production process for the production of methanol and urea product from a hydrocarbon containing feed-stock by means of autothermal reforming, intermediary methanol and ammonia formation and conversion of the ammonia to urea product and catalytic oxidation of the methanol to formaldehyde.
    Type: Application
    Filed: March 5, 2020
    Publication date: February 17, 2022
    Applicant: Haldor Topsøe A/S
    Inventors: Marcus Symreng, Pat A. Han, Christian Henrik Speth
  • PROCESS FOR THE PRODUCTION OF UREA FORMALDEHYDE CONCENTRATE
    Publication number: 20220048853
    Abstract: Parallel co-production process for the production of methanol and urea product from a hydrocarbon containing feed-stock by means of primary and secondary reforming, intermediary methanol and ammonia formation and conversion of the ammonia to urea product and catalytic oxidation of methanol to formaldehyde.
    Type: Application
    Filed: March 5, 2020
    Publication date: February 17, 2022
    Applicant: Haldor Topsøe A/S
    Inventors: Marcus Symreng, Pat A. Han
  • CO-PRODUCTION OF METHANOL, AMMONIA AND UREA
    Publication number: 20210380427
    Abstract: A process and plant for the co-production of methanol and ammonia together with urea production from a hydrocarbon feed without venting to the atmosphere carbon dioxide captured from the methanol or ammonia synthesis gas and without using expensive air separation units and water gas shift. Carbon dioxide is removed from flue gas from reforming section and used to convert partially or fully all ammonia into urea.
    Type: Application
    Filed: August 23, 2021
    Publication date: December 9, 2021
    Inventors: Pat A. Han, Mitra Heidarpanah
  • CO-PRODUCTION OF METHANOL AND AMMONIA
    Publication number: 20210380428
    Abstract: A plant for the co-production of methanol and ammonia from a hydrocarbon feed without venting to the atmosphere carbon dioxide captured from the methanol or ammonia synthesis gas and without using expensive air separation units and water gas shift.
    Type: Application
    Filed: August 26, 2021
    Publication date: December 9, 2021
    Inventors: Pat A. Han, Mitra Heidarpanah
  • Co-production of methanol and ammonia
    Patent number: 11130681
    Abstract: Process for the co-production of methanol and ammonia from a hydrocarbon feed without venting to the atmosphere carbon dioxide captured from the methanol or ammonia synthesis gas and without using expensive air separation units and water gas shift.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: September 28, 2021
    Assignee: Haldor Topsoe A/S
    Inventors: Pat A. Han, Mitra Heidarpanah
  • Co-production of methanol, ammonia and urea
    Patent number: 11130680
    Abstract: Process for the co-production of methanol and ammonia together with urea production from a hydrocarbon feed without venting to the atmosphere carbon dioxide captured from the methanol or ammonia synthesis gas and without using expensive air separation units and water gas shift. Carbon dioxide removal from flue gas from reforming section to convert partially or fully all ammonia into urea. Synergi of having methanol, ammonia and urea production to produce coating material for the urea production.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: September 28, 2021
    Assignee: Haldor Topsoe A/S
    Inventors: Pat A. Han, Mitra Heidarpanah
  • Process for the co-production of methanol and ammonia in parallel
    Patent number: 11124424
    Abstract: A process for co-production of methanol and ammonia in parallel based on autothermal reforming with oxygen enriched air from electrolysis of water and separation of air and preparation of ammonia with hydrogen from the electrolysis of water and nitrogen from the separation of air.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: September 21, 2021
    Assignee: Haldor Topsoe A/S
    Inventor: Pat A. Han
  • Process for the co-production of methanol and ammonia
    Patent number: 11053130
    Abstract: A process for the combined preparation of methanol and ammonia based on primary steam reforming a hydrocarbon feed stock and adiabatic secondary reforming with oxygen enriched air from electrolysis of water.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: July 6, 2021
    Assignee: Haldor Topsoe A/S
    Inventor: Pat A. Han