Patents by Inventor Christian Henrik Speth
Christian Henrik Speth 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).
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Publication number: 20230202853Abstract: 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: ApplicationFiled: November 14, 2022Publication date: June 29, 2023Applicant: Topsoe A/SInventors: Christian Henrik Speth, Michael Hultqvist, Pat A. Han
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Publication number: 20230137755Abstract: 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: ApplicationFiled: May 14, 2021Publication date: May 4, 2023Inventors: Christian Henrik Speth, Michael Hultqvist, Pat A Han
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Patent number: 11511991Abstract: Process for the production of a product gas containing nitrogen and hydrogen from ammonia comprising the steps of non-catalytic partial oxidation of ammonia with an oxygen containing gas to a process gas containing nitrogen, water, amounts of nitrogen oxides and residual amounts of ammonia; cracking of at least a part of the residual amounts of ammonia to hydrogen and nitrogen in the process gas by contact with a nickel containing catalyst and simultaneously reducing the amounts of nitrogen oxides to nitrogen and water by reaction with a part of the hydrogen formed during cracking of the process gas by contact of the process gas with the nickel containing catalyst; and withdrawing the hydrogen and nitrogen containing product gas.Type: GrantFiled: August 21, 2018Date of Patent: November 29, 2022Assignee: Topsoe A/SInventors: Christian Henrik Speth, Tommy Lykke Wind, Per Juul Dahl
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Patent number: 11498835Abstract: The present invention relates to a revamp method for increasing the front-end capacity of a plant comprising a reforming section, wherein a feed is reformed in at least one reforming step to a reformed stream comprising CH4, CO, CO2, H2 and H2O a shift section wherein the reformed stream is shifted in a shift reaction in at least a high temperature shift step, said method comprising the steps of In the High temperature shift step exchanging an original Fe-based catalyst with a non-Fe-based catalyst Increasing the feed flow to the reforming section, and The HTS step is carried out at a reduced steam/dry-gas ratio (S/DG) compared to an original S/DG in the original HTS step with the original Fe-based catalyst.Type: GrantFiled: February 28, 2017Date of Patent: November 15, 2022Assignee: HALDOR TOPSØE A/SInventors: Annette E. Krøll Jensen, Christian Henrik Speth, Thomas Rostrup-Nielsen, Niels Christian Schjødt
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Patent number: 11286159Abstract: In a process for the production of ammonia synthesis gas from a hydrocarbon-containing feedstock, comprising steam reforming of the feedstock and treatment of the synthesis gas obtained, the shift of the synthesis gas comprises two shift steps, both including stable catalysts, whereby the formation of hazardous by-products is avoided or at least reduced to an acceptable low level. The two shift steps can both be HTS, or they can be one HTS and one LTS or one HTS and one MTS. The catalyst used in the HTS and the LTS steps is based on zinc oxide and zinc aluminum spinel, and the catalyst used in the MTS and the LTS steps can be based on copper.Type: GrantFiled: June 28, 2018Date of Patent: March 29, 2022Assignee: HALDOR TOPSØE A/SInventors: Annette E. Krøll Jensen, Christian Henrik Speth, Thomas Rostrup-Nielsen
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Publication number: 20220048854Abstract: 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: ApplicationFiled: March 5, 2020Publication date: February 17, 2022Applicant: Haldor Topsøe A/SInventors: Marcus Symreng, Pat A. Han, Christian Henrik Speth
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Patent number: 11175040Abstract: A method and an apparatus for protection of a combustion unit of a chemical process against over firing, the burner(s) of the combustion unit are limited by a fuel and duty limiter which limits the duty based on process feeds, combustion gas and fuel flows.Type: GrantFiled: February 20, 2017Date of Patent: November 16, 2021Assignee: HALDOR TOPSØE A/SInventors: Emil Andreas Tjärnehov, Anne Krog Jensen, Christian Henrik Speth, Peter Bruun Jensen
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Patent number: 11161084Abstract: In a cooled axial flow converter, in which process gas passes from an outer annulus via a catalyst bed, wherein the process gas is converted to a product, to an inner centre tube, the catalyst bed comprises at least one module comprising at least one catalyst layer. Feed means are arranged to provide a flow of process gas from the outer annulus to an inlet part of one or more modules, and collector means are arranged to provide a flow of product stream of converted process gas, which has passed axially down the catalyst bed of one or more of the modules to the centre tube. At least one of the one or more modules comprises one or more cooling plates arranged to be cooled by a cooling fluid.Type: GrantFiled: December 19, 2018Date of Patent: November 2, 2021Assignee: Haldor Topsoe A/SInventors: Christian Henrik Speth, Per Juul Dahl
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Patent number: 11124423Abstract: A process for producing an ammonia synthesis gas, said process comprising the steps of: —Reforming a hydrocarbon feed in a reforming step thereby obtaining a synthesis gas comprising CH4, CO, CO2, H2 and H2O, —Shifting the synthesis gas in one in or more shift steps in series, —Optionally wash the synthesis gas leaving the shift section with water, —Sending the process condensate originating from cooling and washing the synthesis gas leaving the shift section to a process condensate stripper wherein the dissolved shift byproducts and dissolved gases are stripped out of the process condensate using steam resulting in a steam stream containing more than 99% of the dissolved methanol in process condensate. —Adding all or part of said steam stream from the process condensate stripper to the synthesis gas downstream the reforming step, prior to the last shift step, wherein —The steam/carbon ratio in the reforming step and the shift step is less than 2.6.Type: GrantFiled: March 7, 2018Date of Patent: September 21, 2021Assignee: Haldor Topsoe A/SInventors: Christian Henrik Speth, Per Juul Dahl, Annette E. Krøll Jensen, Niels Christian Schjødt, Marcus Symreng
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Patent number: 11065591Abstract: A method and reactor for performing exothermic reactions with parallel operated catalyst modules arranged in stacked order within a pressure shell and adapted to axial flow of process gas through one or more catalyst layers and at least one catalyst layer cooled by an intrabed heat exchanger.Type: GrantFiled: December 19, 2018Date of Patent: July 20, 2021Assignee: Haldor Topsoe A/SInventors: Christian Henrik Speth, Tommy Lykke Wind, Uffe Bach Thomsen, Anders Helbo Hansen
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Publication number: 20210207804Abstract: A method and an apparatus for protection of a combustion unit of a chemical process against over firing, the burner(s) of the combustion unit are limited by a fuel and duty limiter which limits the duty based on process feeds, combustion gas and fuel flows.Type: ApplicationFiled: February 20, 2017Publication date: July 8, 2021Applicant: HALDOR TOPSØE A/SInventors: Emil Andreas Tjärnehov, Anne Krog Jensen, Christian Henrik Speth, Peter Bruun Jensen
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Publication number: 20210206634Abstract: The present invention relates to a revamp method for increasing the front-end capacity of a plant comprising a reforming section, wherein a feed is reformed in at least one reforming step to a reformed stream comprising CH4, CO, CO2, H2 and H2O a shift section wherein the reformed stream is shifted in a shift reaction in at least a high temperature shift step, said method comprising the steps of In the High temperature shift step exchanging an original Fe-based catalyst with a non-Fe-based catalyst Increasing the feed flow to the reforming section, and The HTS step is carried out at a reduced steam/dry-gas ratio (S/DG) compared to an original S/DG in the original HTS step with the original Fe-based catalyst.Type: ApplicationFiled: February 28, 2017Publication date: July 8, 2021Applicant: HALDOR TOPSØE A/SInventors: Annette E. Krøll Jensen, Christian Henrik Speth, Thomas Rostrup-Nielsen, Niels Christian Schjødt
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Patent number: 11040321Abstract: In an adiabatic axial flow converter, in which process gas passes from an outer annulus via a catalyst bed, wherein the process gas is converted to a product, to an inner centre tube, the catalyst bed comprises at least one module comprising one or more catalyst layers. Feed means are arranged to provide a flow of process gas from the outer annulus to an inlet part of one or more modules, and collector means are arranged to provide a flow of product stream of converted process gas which passes axially through the catalyst bed of one or more of the modules to the centre tube.Type: GrantFiled: December 19, 2018Date of Patent: June 22, 2021Assignee: Haldor Topsoe A/SInventors: Christian Henrik Speth, Per Juul Dahl
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Publication number: 20210170353Abstract: In a cooled axial flow converter, in which process gas passes from an outer annulus via a catalyst bed, wherein the process gas is converted to a product, to an inner centre tube, the catalyst bed comprises at least one module comprising at least one catalyst layer. Feed means are arranged to provide a flow of process gas from the outer annulus to an inlet part of one or more modules, and collector means are arranged to provide a flow of product stream of converted process gas, which has passed axially down the catalyst bed of one or more of the modules to the centre tube. At least one of the one or more modules comprises one or more cooling plates arranged to be cooled by a cooling fluid.Type: ApplicationFiled: December 19, 2018Publication date: June 10, 2021Applicant: Haldor Topsøe A/SInventors: Christian Henrik Speth, Per Juul Dahl
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Patent number: 11027984Abstract: A process for producing urea with controlled excess of CO2 and/or NH3. The process includes the steps of: reforming the hydrocarbon feed gas, thereby obtaining a synthesis gas comprising CH4, CO, CO2, H2 and H2O, shifting the synthesis gas, removing CO2 from the synthesis gas, removing residual H2O and/or CO2 from the synthesis gas, removing CH4, CO, Ar and/or He, and adding stoichiometric nitrogen to produce NH3 to the synthesis gas, synthesizing NH3 to obtain a NH3 product, and adding at least part of the product CO2 and at least part of the NH3 product to a urea synthesis step to make a urea product. The amount of excess CO2 and/or NH3 is controlled by adjusting the steam/carbon in the reforming step and/or the H2O addition upstream the shift step and/or adjusting the inlet temperature to at least one or more shift steps.Type: GrantFiled: March 7, 2018Date of Patent: June 8, 2021Assignee: Haldor Topsoe A/SInventors: Christian Henrik Speth, Per Juul Dahl, Annette E. Kroll Jensen, Niels Christian Schjødt, Marcus Symreng
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Publication number: 20200384431Abstract: In an adiabatic axial flow converter, in which process gas passes from an outer annulus via a catalyst bed, wherein the process gas is converted to a product, to an inner centre tube, the catalyst bed comprises at least one module comprising one or more catalyst layers. Feed means are arranged to provide a flow of process gas from the outer annulus to an inlet part of one or more modules, and collector means are arranged to provide a flow of product stream of converted process gas which passes axially through the catalyst bed of one or more of the modules to the centre tube.Type: ApplicationFiled: December 19, 2018Publication date: December 10, 2020Applicant: Haldor Topsøe A/SInventors: Christian Henrik Speth, Per Juul Dahl
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Publication number: 20200368706Abstract: A method and reactor for performing exothermic reactions with parallel operated catalyst modules arranged in stacked order within a pressure shell and adapted to axial flow of process gas through one or more catalyst layers and at least one catalyst layer cooled by an intrabed heat exchanger.Type: ApplicationFiled: December 19, 2018Publication date: November 26, 2020Applicant: Haldor Topsøe A/SInventors: Christian Henrik Speth, Tommy Lykke Wind, Uffe Bach Thomsen, Anders Helbo Hansen
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Publication number: 20200231456Abstract: A process for producing UREA, said process comprising the steps of:—purification of a hydrocarbon feed gas removing Sulphur and/or chloride components if present, —reforming the hydrocarbon feed gas in a reforming step where the steam/carbon ratio is less than 2.6 thereby obtaining a synthesis gas comprising CH4, CO, CO2, H2 and H2O, —optionally adding H2O to the synthesis gas from the reforming step maintaining an overall steam/carbon less than 2.Type: ApplicationFiled: March 7, 2018Publication date: July 23, 2020Applicant: Haldor Topsøe A/SInventors: Christian Henrik Speth, Per Juul Dahl, Annette E. Kroll Jensen, Niels Christian Schjødt, Marcus Symreng
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Publication number: 20200180952Abstract: In a process for the production of ammonia synthesis gas from a hydrocarbon-containing feedstock, comprising steam reforming of the feedstock and treatment of the synthesis gas obtained, the shift of the synthesis gas comprises two shift steps, both including stable catalysts, whereby the formation of hazardous by-products is avoided or at least reduced to an acceptable low level. The two shift steps can both be HTS, or they can be one HTS and one LTS or one HTS and one MTS. The catalyst used in the HTS and the LTS steps is based on zinc oxide and zinc aluminum spinel, and the catalyst used in the MTS and the LTS steps can be based on copper.Type: ApplicationFiled: June 28, 2018Publication date: June 11, 2020Applicant: HALDOR TOPSØE A/SInventors: Annette E. KRØLL JENSEN, Christian Henrik SPETH, Thomas ROSTRUP-NIELSEN
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Publication number: 20200123006Abstract: Process for the production of a product gas containing nitrogen and hydrogen from ammonia comprising the steps of non-catalytic partial oxidation of ammonia with an oxygen containing gas to a process gas containing nitrogen, water, amounts of nitrogen oxides and residual amounts of ammonia; cracking of at least a part of the residual amounts of ammonia to hydrogen and nitrogen in the process gas by contact with a nickel containing catalyst and simultaneously reducing the amounts of nitrogen oxides to nitrogen and water by reaction with a part of the hydrogen formed during cracking of the process gas by contact of the process gas with the nickel containing catalyst; and withdrawing the hydrogen and nitrogen containing product gas.Type: ApplicationFiled: August 21, 2018Publication date: April 23, 2020Applicant: Haldor Topsøe A/SInventors: Christian Henrik Speth, Tommy Lykke Wind, Per Juul Dahl