Patents by Inventor Per Aggerholm Sørensen
Per Aggerholm Sørensen 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: 11691877Abstract: A process plant and a process for production of sulfur from a feedstock gas including from 15% to 100 vol % H2S and a stream of sulfuric acid, the process including a) providing a Claus reaction furnace feed stream with a substoichiometric amount of oxygen, b) directing to a Claus reaction furnace operating at elevated temperature, c) cooling to provide a cooled Claus converter feed gas, d) directing to contact a material catalytically active in the Claus reaction, e) withdrawing a Claus tail gas and elementary sulfur, f) directing a stream comprising said Claus tail gas to a Claus tail gas treatment, wherein sulfuric acid directed to said Claus reaction furnace is in the form of droplets with 90% of the mass of the droplets having a diameter below 500 ?m, with the associated benefit of such a process efficiently converting all liquid H2SO4 to gaseous H2SO4 and further to SO2.Type: GrantFiled: April 30, 2020Date of Patent: July 4, 2023Assignee: HALDOR TOPSØE A/SInventors: Morten Thellefsen, Per Aggerholm Sørensen, Martin Møllerhøj, Mads Lykke
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Publication number: 20220401863Abstract: Process for the removal of particulate matter from an aqueous stream containing a concentrated acid, preferably concentrated sulfuric acid, the process including mechanical filtration by passing the aqueous stream through a filter unit, the filter unit including a metallic, ceramic or polymeric filter, or a filter including a filter aid on a septum. The aqueous stream is the exit stream of a sulfuric acid condenser, optionally the exit stream of a sulfuric acid concentrator arranged downstream the sulfuric acid condenser.Type: ApplicationFiled: February 12, 2021Publication date: December 22, 2022Applicant: TOPSOE A/SInventors: Mads LYKKE, Lars Piilmann BRORHOLT, Per Aggerholm SØRENSEN
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Publication number: 20220177307Abstract: A process plant and a process for production of sulfur from a feedstock gas including from 15% to 100 vol % H2S and a stream of sulfuric acid, the process including a) providing a Claus reaction furnace feed stream with a substoichiometric amount of oxygen, b) directing to a Claus reaction furnace operating at elevated temperature, c) cooling to provide a cooled Claus converter feed gas, d) directing to contact a material catalytically active in the Claus reaction, e) withdrawing a Claus tail gas and elementary sulfur, f) directing a stream comprising said Claus tail gas to a Claus tail gas treatment, wherein sulfuric acid directed to said Claus reaction furnace is in the form of droplets with 90% of the mass of the droplets having a diameter below 500 ?m, with the associated benefit of such a process efficiently converting all liquid H2SO4 to gaseous H2SO4 and further to SO2.Type: ApplicationFiled: April 30, 2020Publication date: June 9, 2022Applicant: HALDOR TOPSØE A/SInventors: Morten THELLEFSEN, Per Aggerholm SØRENSEN, Martin MØLLERHØJ, Mads LYKKE
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Patent number: 11235276Abstract: The present disclosure relates to a process for removal of an aerosol, comprising the steps of directing a process gas comprising an aerosol to contact an inertial demister providing a first demisted process gas, and directing the first demisted process gas to contact a coalescing demister providing a second demisted process gas, characterized in said first inertial demister being more open than said coalescing demister, where more open is defined as having a higher void fraction or a lower density with the associated benefit of such a process providing an efficient removal of a large volume of liquid from the inertial demister, while avoiding flooding of the demister system. It further relates to a process plant for sulfuric acid production employing such a pair of demisters.Type: GrantFiled: July 27, 2018Date of Patent: February 1, 2022Assignee: HALDOR TOPSØE A/SInventors: Per Aggerholm Sørensen, Morten Thellefsen
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Patent number: 11198093Abstract: A method for cleaning an off-gas from viscose production, essentially containing H2S and CS2, comprises passing the gas through a catalytic reactor containing a direct oxidation type catalyst, such as V2O5 on silica, to convert H2S in the gas to elemental sulfur, SO2 or mixtures thereof, either via the oxygen present in the gas or via oxygen added to the gas stream. Elemental sulfur and SO2 are removed from the effluent gas from the catalytic reactor, and the unconverted CS2 is recycled to the viscose production process.Type: GrantFiled: September 11, 2017Date of Patent: December 14, 2021Assignee: HALDOR TOPSØE A/SInventors: Niklas Bengt Jakobsson, Peter Bo Olsen, Per Aggerholm Sørensen, Anders Theilgaard Madsen
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Publication number: 20200325345Abstract: Disclosed herein are systems and methods for reducing the particulate matter content of an exhaust gas from a carbon black process.Type: ApplicationFiled: June 29, 2020Publication date: October 15, 2020Inventors: Peter Bo OLSEN, Kim CHRISTENSEN, Per Aggerholm SØRENSEN, Mårten Nils Rickard GRANROTH, Russell WEBB, Rodney TAYLOR, Daniel HORN, Ralf BERGSTRÄSSER, Donnie LOUBIERE, Kay SCHMIDT
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Publication number: 20200246743Abstract: The present disclosure relates to a process for removal of an aerosol, comprising the steps of directing a process gas comprising an aerosol to contact an inertial demister providing a first demisted process gas, and directing the first demisted process gas to contact a coalescing demister providing a second demisted process gas, characterized in said first inertial demister being more open than said coalescing demister, where more open is defined as having a higher void fraction or a lower density with the associated benefit of such a process providing an efficient removal of a large volume of liquid from the inertial demister, while avoiding flooding of the demister system. It further relates to a process plant for sulfuric acid production employing such a pair of demisters.Type: ApplicationFiled: July 27, 2018Publication date: August 6, 2020Applicant: HALDOR TOPSØE A/SInventors: Per Aggerholm SØRENSEN, Morten THELLEFSEN
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Method and plant design for reduction of start-up sulfur oxide emissions in sulfuric acid production
Patent number: 10633251Abstract: The invention is a method and a sulfuric acid plant design for reduction of start-up SO2, SO3 and H2SO4 emissions in sulfuric acid production, in which SO2 is converted to SO3 in n successive catalyst beds, where n is an integer >1. The final catalytic beds are used as absorbents for SO2 to SO3 during the start-up procedure, and one or more of the m beds downstream the first bed are purged, either separately or simultaneously, with hot gas, where m is an integer >1 and m<n, during the previous shut-down. Also, one separate purge with hot gas is used on the final bed.Type: GrantFiled: October 24, 2016Date of Patent: April 28, 2020Assignee: HALDOR TOPSØE A/SInventors: Mårten Nils Rickard Granroth, Per Aggerholm Sørensen, Kurt Agerbæk Christensen -
Publication number: 20190255484Abstract: A method for cleaning an off-gas from viscose production, essentially containing H2S and CS2, comprises passing the gas through a catalytic reactor containing a direct oxidation type catalyst, such as V2O3 on silica, to convert H2S in the gas to elemental sulfur, SO2 or mixtures thereof, either via the oxygen present in the gas or via oxygen added to the gas stream. Elemental sulfur and SO2 are removed from the effluent gas from the catalytic reactor, and the unconverted CS2 is recycled to the viscose production process.Type: ApplicationFiled: September 11, 2017Publication date: August 22, 2019Applicant: HALDOR TOPSØE A/SInventors: Niklas Bengt Jakobsson, Peter Bo Olsen, Per Aggerholm Sørensen, Anders Theilgaard Madsen
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Patent number: 10322374Abstract: In a process for the removal of soot from a sulfurous gas stream, a process gas containing O2 and more than 500 ppm SO2 and/or SO3 together with soot is brought into contact with a VK type catalyst in a reactor, said catalyst comprising vanadium pentoxide (V2O5), sulfur in the form of sulfate, pyrosulfate, tri- or tetrasulfate and one or more alkali metals, such as Na, K, Rb or Cs, on a porous carrier, preferably a silicon dioxide carrier.Type: GrantFiled: April 13, 2016Date of Patent: June 18, 2019Assignee: Haldor Topsoe A/SInventors: Per Aggerholm Sørensen, Kurt Agerbæk Christensen
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METHOD AND PLANT DESIGN FOR REDUCTION OF START-UP SULFUR OXIDE EMISSIONS IN SULFURIC ACID PRODUCTION
Publication number: 20190047859Abstract: The invention is a method and a sulfuric acid plant design for reduction of start-up SO2, SO3 and H2SO4 emissions in sulfuric acid production, in which SO2 is converted to SO3 in n successive catalyst beds, where n is an integer >1. The final catalytic beds are used as absorbents for SO2 to SO3 during the start-up procedure, and one or more of the m beds downstream the first bed are purged, either separately or simultaneously, with hot gas, where m is an integer >1 and m<n, during the previous shut-down. Also, one separate purge with hot gas is used on the final bed.Type: ApplicationFiled: October 24, 2016Publication date: February 14, 2019Applicant: HALDOR TOPSØE A/SInventors: Mårten Nils Rickard GRANROTH, Per Aggerholm SØRENSEN, Kurt Agerbæk CHRISTENSEN -
Publication number: 20180093225Abstract: In a process for the removal of soot from a sulfurous gas stream, a process gas containing O2 and more than 500 ppm SO2 and/or SO3 together with soot is brought into contact with a VK type catalyst in a reactor, said catalyst comprising vanadium pentoxide (V2O5), sulfur in the form of sulfate, pyrosulfate, tri- or tetrasulfate and one or more alkali metals, such as Na, K, Rb or Cs, on a porous carrier, preferably a silicon dioxide carrier.Type: ApplicationFiled: April 13, 2016Publication date: April 5, 2018Applicant: Haldor Topsøe A/SInventors: Per Aggerholm Sørensen, Kurt Agerbæk Christensen