Patents by Inventor Michael Hultqvist

Michael Hultqvist 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: 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
  • 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
  • Publication number: 20220410109
    Abstract: A reactor system and a process for carrying out reverse water gas shift reaction of a feedstock comprising CO2 and H2 to a first product gas comprising CO are provided, where a methanation reaction take place in parallel to the reverse water gas shift reaction, and where the heat for the endothermic reverse water gas shift reaction is provided by resistance heating.
    Type: Application
    Filed: December 3, 2020
    Publication date: December 29, 2022
    Applicant: HALDOR TOPSØE A/S
    Inventors: Peter Mølgaard MORTENSEN, Kim AASBERG-PETERSEN, Michael HULTQVIST, Robert KLEIN, Kasper Emil LARSEN
  • Patent number: 11247955
    Abstract: Process for the preparation of a methanol product comprising the steps of a) providing a first process stream consisting essentially of carbon dioxide; b) providing a second process stream consisting of hydrogen by electrolyzing water in an electrolysis unit; c) mixing the first and second process in amount to obtain a methanol synthesis gas with a mole ratio of H2 and CO2 of between 2.5 and 3.5; d) catalytic converting the methanol synthesis gas into raw methanol in at least one methanol reactor; e) purifying the raw methanol in a distillation unit; and recovering waste heat generated in the electrolysis unit in step (b) by transferring the waste heat to a circulating heat transfer medium by indirect heat exchange with the waste heat and by indirect heat exchange of the heated heat transfer medium with steam used for the distillation of the raw methanol, wherein the heated transfer medium is compressed upstream the indirect heat exchange with steam.
    Type: Grant
    Filed: August 28, 2019
    Date of Patent: February 15, 2022
    Assignee: Haldor Topsoe A/S
    Inventors: Emil Andreas T{umlaut over (j)}arnehov, Lars Storm Pedersen, Michael Hultqvist, Søren Grønborg Eskesen, Louise Wissing Jensen
  • Publication number: 20210363079
    Abstract: Process for the preparation of a methanol product comprising the steps of a) providing a first process stream consisting essentially of carbon dioxide; b) providing a second process stream consisting of hydrogen by electrolyzing water in an electrolysis unit; c) mixing the first and second process in amount to obtain a methanol synthesis gas with a mole ratio of H2 and CO2 of between 2.5 and 3.5; d) catalytic converting the methanol synthesis gas into raw methanol in at least one methanol reactor; e) purifying the raw methanol in a distillation unit; and recovering waste heat generated in the electrolysis unit in step (b) by transferring the waste heat to a circulating heat transfer medium by indirect heat exchange with the waste heat and by indirect heat exchange of the heated heat transfer medium with steam used for the distillation of the raw methanol, wherein the heated transfer medium is compressed upstream the indirect heat exchange with steam.
    Type: Application
    Filed: August 28, 2019
    Publication date: November 25, 2021
    Applicant: Haldor Topsøe A/S
    Inventors: Emil Andreas Tjärnehov, Lars Storm Pedersen, Michael Hultqvist, Søren Grønborg Eskesen, Louise Wissing Jensen
  • Publication number: 20200109051
    Abstract: Method for the preparation of synthesis gas combining electrolysis of water, tubular steam reforming and autothermal reforming of a hydrocarbon feed stock.
    Type: Application
    Filed: July 20, 2018
    Publication date: April 9, 2020
    Applicant: Haldor Topsøe A/S
    Inventors: Kim Aasberg-Petersen, Pat A. Han, Michael Hultqvist, Peter Mølgaard Mortensen
  • Patent number: 9353022
    Abstract: A process for the conversion of natural gas to hydrocarbon products by (a) mixing natural gas with a small amount of hydrogen, (b) purifying the mixture from (a) to obtain purified natural gas, (c) mixing the purified natural gas from (b) with steam to obtain the desired steam-to-carbon (S/C) ratio, (d) mixing the natural gas/steam mixture from (c) with tail gas from the downstream Fischer-Tropsch synthesis and converting the mixture into a synthesis gas, (e) cooling the synthesis gas from (d) and condensing out the process water from it, (f) leading the dry synthesis gas from (e) to a carbon dioxide removal section, and (g) sending the CO2-deprived synthesis gas to the downstream Fischer-Tropsch synthesis unit as a make-up gas. The carbon dioxide removed from the syngas in step (f) is either vented or kept for other use without any part of it being recycled.
    Type: Grant
    Filed: December 1, 2014
    Date of Patent: May 31, 2016
    Assignee: Haldor Topsoe A/S
    Inventors: Kristian Lindell, Thomas Sandahl Christensen, Michael Hultqvist, Kim Aasberg-Petersen
  • Publication number: 20150152019
    Abstract: A process for the conversion of natural gas to hydrocarbon products comprises the steps of (a) mixing natural gas with a small amount of hydrogen, (b) purifying the mixture from (a) in a feed purification section to obtain purified natural gas, (c) mixing the purified natural gas from (b) with steam to obtain the desired steam-to-carbon (S/C) ratio, (d) mixing the natural gas/steam mixture from (c) with the tail gas from the downstream Fischer-Tropsch synthesis or a part thereof in a syngas section and converting the mixture into a synthesis gas, (e) cooling the synthesis gas from (d) and condensing out the process water from it, (f) leading the dry synthesis gas from (e) to a carbon dioxide removal section, where the CO2 is removed from the synthesis gas, and (g) sending the CO2-deprived synthesis gas to the downstream Fischer-Tropsch synthesis unit as a make-up gas. The carbon dioxide removed from the syngas in step (f) is either vented or kept for other use without any part of it being recycled.
    Type: Application
    Filed: December 1, 2014
    Publication date: June 4, 2015
    Applicant: Haldor Topsøe A/S
    Inventors: Kristian Lindell, Thomas Sandahl Christensen, Michael Hultqvist, Kim Aasberg-Petersen