Patents by Inventor Niels Ulrik Andersen
Niels Ulrik Andersen 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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Patent number: 10150670Abstract: A novel process for synthesis gas generation comprises treating a hydrocarbon feed in a primary reformer (PR), compressing at least part of the flue gas from the primary reformer in a compressor (C1), and feeding the compressed flue gas to a secondary reformer (SR) together with the primary reformer effluent. In the process, enriched air (EA) is added either to the primary reformer, to the secondary reformer or both. The process is especially suited for co-production of ammonia and methanol or for production of either ammonia or methanol. The total CO2 emission is lowered considerably by using the process of the invention.Type: GrantFiled: November 25, 2015Date of Patent: December 11, 2018Assignee: Haldor Topsoe A/SInventor: Niels Ulrik Andersen
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Publication number: 20170369312Abstract: A novel process for synthesis gas generation comprises treating a hydrocarbon feed in a primary reformer (PR), compressing at least part of the flue gas from the primary reformer in a compressor (C1), and feeding the compressed flue gas to a secondary reformer (SR) together with the primary reformer effluent. In the process, enriched air (EA) is added either to the primary reformer, to the secondary reformer or both. The process is especially suited for co-production of ammonia and methanol or for production of either ammonia or methanol. The total CO2 emission is lowered considerably by using the process of the invention.Type: ApplicationFiled: November 25, 2015Publication date: December 28, 2017Applicant: Haldor Topsøe A/SInventor: Niels Ulrik Andersen
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Publication number: 20170320728Abstract: In a process for the elimination of volatile organic compounds (VOCs) and hazardous air pollutants (HAPs) formed as by-products in the shift section (SS) of an ammonia plant, a carbon dioxide (C02) stream from a vent line, which is arranged downstream from the shift section and the C02 removal section, is recycled to the primary reformer (TR) of the ammonia plant. This way, the oxygenates contained in the carbon dioxide vent will be decomposed in the primary reformer burners, and the total emission of VOCs and HAPs will be considerably reduced.Type: ApplicationFiled: November 25, 2015Publication date: November 9, 2017Applicant: Haldor Topsøe A/SInventors: Niels Ulrik Andersen, Per Jul Dahl, Vinay Avasthi
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Patent number: 9718685Abstract: The present disclosure relates to a reactor and a method of operation for an exothermal process being catalyzed by a catalytically active material receiving a reactant gas and providing a product gas, in which said exothermal process has a heat development having a potential for thermally degrading said catalytically active material, and which exothermal process operates at a temperature at which the reactants and at least 80% or all of the products are present as gases, said method comprising the steps of a) directing the reactant gas to a first zone of a material catalytically active in the exothermal process producing an first product gas, and b) directing the first product gas to a second zone of a material catalytically active in the exothermal process producing a product gas, with the option of fully or partially by-passing either said first zone or said second zone, while directing a non-condensing gas stream having a temperature at least 50° C.Type: GrantFiled: October 24, 2014Date of Patent: August 1, 2017Assignee: Haldor Topsoe A/SInventors: Troels Dahlgaard Stummann, Niels Ulrik Andersen, Madhanakrishnan Janardhanan, Jens R. Rostrup-Nielsen
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Publication number: 20170197829Abstract: The present application relates to a production plant comprising—a synthesis gas generation step (1) arranged to receive a hydrocarbon or carboneous feedstock (2) and in a synthesis gas generation process provide a syngas, —a production step (4) arranged to receive the syngas and produce a product stream (5), —a reverse water gas shift step (4) arranged to receive a H2 rich gas stream (7) and a C02 feed (8) and in a RWGS step obtain a reverse shifted gas stream (9), and—means (10) for adding said reverse shifted gas stream (9) to the synthesis gas stream (3).Type: ApplicationFiled: May 27, 2015Publication date: July 13, 2017Applicant: Haldor Topsøe A/SInventor: Niels Ulrik Andersen
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Patent number: 9695058Abstract: In an ammonia or hydrogen plant comprising a desulfurisation section, a reforming section and a shift section, where the shift section comprises a low temperature shift converter and a medium temperature shift converter, a vent line is arranged downstream from the low temperature shift converter and the medium temperature shift converter in order to allow the shift converters to be re-heated with process gas at a low pressure (typically 3-7 bar). This way condensation of water vapour in the process gas is avoided. By applying this vent line it becomes possible to save significant time, more specifically 8-24 hours, for restarting the production after temporary shut-down thereof, because a heat-up of the LTS/MTS converter in circulating nitrogen is avoided.Type: GrantFiled: April 16, 2014Date of Patent: July 4, 2017Assignee: Haldor Topsøe A/SInventors: Niels Ulrik Andersen, Christian Speth
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Publication number: 20160257562Abstract: The present disclosure relates to a reactor and a method of operation for an exothermal process being catalyzed by a catalytically active material receiving a reactant gas and providing a product gas, in which said exothermal process has a heat development having a potential for thermally degrading said catalytically active material, and which exothermal process operates at a temperature at which the reactants and at least 80% or all of the products are present as gases, said method comprising the steps of a) directing the reactant gas to a first zone of a material catalytically active in the exothermal process producing an first product gas, and b) directing the first product gas to a second zone of a material catalytically active in the exothermal process producing a product gas, with the option of fully or partially by-passing either said first zone or said second zone, while directing a non-condensing gas stream having a temperature at least 50° C.Type: ApplicationFiled: October 24, 2014Publication date: September 8, 2016Applicant: HALDOR TOPSØE A/SInventors: Troels Dahlgaard STUMMANN, Niels Ulrik ANDERSEN, Madhanakrishnan JANARDHANAN, Jens R. ROSTRUP-NIELSEN
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Publication number: 20160145113Abstract: In an ammonia or hydrogen plant comprising a desulfurisation section, a reforming section and a shift section, where the shift section comprises a low temperature shift converter and a medium temperature shift converter, a vent line is arranged downstream from the low temperature shift converter and the medium temperature shift converter in order to allow the shift converters to be re-heated with process gas at a low pressure (typically 3-7 bar). This way condensation of water vapour in the process gas is avoided. By applying this vent line it becomes possible to save significant time, more specifically 8-24 hours, for restarting the production after temporary shut-down thereof, because a heat-up of the LTS/MTS converter in circulating nitrogen is avoided.Type: ApplicationFiled: April 16, 2014Publication date: May 26, 2016Applicant: HALDOR TOPSØE A/SInventors: Niels Ulrik Andersen, Christian Speth
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Publication number: 20140124705Abstract: A process for the production of synthesis gas with reduced carbon dioxide foot-print via recycling of carbon dioxide produced in the process to the burners of the steam reformer.Type: ApplicationFiled: November 5, 2013Publication date: May 8, 2014Applicant: Haldor Topsoe A/SInventors: Niels Ulrik Andersen, Martin Østberg