Patents Assigned to Topsoe A/S
  • A PROCESS FOR LOW TEMPERATURE GAS CLEANING WITH OZONE AND A CATALYTIC BAG FILTER FOR USE IN THE PROCESS
    Publication number: 20190217240
    Abstract: A process for the cleaning of a lean gas stream contaminated with volatile organic compounds (VOCs) and/or sulfur-containing compounds comprises the steps of adding ozone to the contaminated lean gas stream, subjecting the ozone-containing lean gas stream to ultraviolet irradiation, thereby transforming VOCs to particles, maintaining the irradiated gas stream in a stay zone for a sufficient time to allow aerosol particle growth, and passing the gas stream through a catalytic bag filter at a temperature down to room temperature to remove the formed particles and eliminate any remaining ozone. The bag filter has been made catalytic by impregnation with one or more metal oxides in which the metals are selected from V, W, Pd and Pt, supported on TiO2.
    Type: Application
    Filed: September 11, 2017
    Publication date: July 18, 2019
    Applicant: Haldor Topsøe A/S
    Inventors: Janus Emil Münster-Swendsen, Niklas Bengt Jakobsson
  • Process for preparing esters of lactic acid, and 2-hydroxy-3-butenoic acid from sugars
    Patent number: 10343986
    Abstract: A continuous flow process for the preparation of one or more esters of lactic acid and 2-hydroxy-3-butenoic acid or ?-hydroxy methionine analogs from a sugar in the presence of a solid Lewis acid catalyst and a solvent comprising an organic solvent and water. The invention facilitates Lewis acid catalyst stability in a continuous reaction process where the water is present in an amount of up to or equal to 10 vol. % of the organic solvent.
    Type: Grant
    Filed: September 17, 2018
    Date of Patent: July 9, 2019
    Assignee: Haldor Topsoe A/S
    Inventors: Irantzu Sadaba Zubiri, Esben Taarning
  • A PROCESS FOR THE REMOVAL OF SILOXANES FROM LANDFILL GASES
    Publication number: 20190201842
    Abstract: In a process for the removal of siloxanes from biogas streams, especially a landfill gas stream or a gas stream from anaerobic digesters, the gas stream is first passed through a conventional siloxane removing unit to remove the majority of the siloxanes and subsequently passed over a selected catalyst with polishing effect, thereby removing remaining traces of siloxanes. The catalyst with polishing effect is chosen from i.a. zeolites, porous silica, titania and various metals on alumina or titania.
    Type: Application
    Filed: October 10, 2017
    Publication date: July 4, 2019
    Applicant: Haldor Topsøe A/S
    Inventors: Niklas Bengt Jakobsson, Kresten Egeblad
  • Axial-radial flow converter
    Patent number: 10329159
    Abstract: In a cooled axial/radial flow converter, in which process gas passes from an outer annulus via a catalyst bed to an inner center tube, the catalyst bed is divided into identical modules stacked on top of each other. The process gas reaches the catalyst through openings facing the outer annulus, passes axially down the catalyst bed of each module, leaves the module through collectors in the bottom thereof, and flows to the center tube. The catalyst bed is cooled by cooling panels, in which the process gas is pre-heated to the reaction temperature, while at the same time the heat of reaction is partly removed from the catalyst bed. The converter is especially suitable as ammonia converter.
    Type: Grant
    Filed: June 9, 2017
    Date of Patent: June 25, 2019
    Assignee: Haldor Topsoe A/S
    Inventor: Christian Henrik Speth
  • Process for the removal of soot from a sulfurous gas stream
    Patent number: 10322374
    Abstract: 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: Grant
    Filed: April 13, 2016
    Date of Patent: June 18, 2019
    Assignee: Haldor Topsoe A/S
    Inventors: Per Aggerholm Sørensen, Kurt Agerbæk Christensen
  • A PROCESS FOR THE PRODUCTION OF SULFUR TRIOXIDE
    Publication number: 20190177161
    Abstract: Sulfur trioxide is produced from a feed stream comprising sulfur-containing compounds and dissolved metals, such as alkali metals, in a plant comprising an incineration furnace, a waste heat boiler, a dilution air heater, a dust removal absorber and an SO2 converter. The plant may further comprise a sulfuric acid condenser for the production of sulfuric acid.
    Type: Application
    Filed: July 4, 2017
    Publication date: June 13, 2019
    Applicant: Haldor Topsøe A/S
    Inventors: Morten Thellefsen, Martin Møllerhøj
  • Method for methanol synthesis
    Patent number: 10308576
    Abstract: In a process for methanol production from synthesis gas, which comprises the steps of providing a make-up gas containing hydrogen and carbon monoxide, in which the content of carbon dioxide is less than 0.1 mole %, mixing the make-up gas with a hydrogen-rich recycle gas and passing the gas mixture to a methanol synthesis reactor, optionally via a sulfur guard, and subjecting the effluent from the synthesis reactor to a separation step, thereby providing crude methanol and the hydrogen-rich recycle gas, the customary addition of carbon dioxide to the make-up gas is replaced by addition of water in an amount of 0.1 to 5 mole %. This way, a CO2 compressor is saved, and the amount of poisonous sulfur in the make-up gas is markedly reduced.
    Type: Grant
    Filed: May 10, 2016
    Date of Patent: June 4, 2019
    Assignee: Haldor Topsoe A/S
    Inventors: Per Juul Dahl, Hassan Modarresi, Max Thorhauge
  • A METHOD FOR THE REDUCTION OF METHANOL EMISSION FROM AN AMMONIA PLANT
    Publication number: 20190152777
    Abstract: In a method for the reduction of methanol emission from an ammonia plant, a chilled methanol-containing feed gas is fed to a methanol absorber, carbon dioxide is separated from the gas phase leaving the methanol absorber, the methanol-containing gas is fed to a final separator, and the chilled, methanol-free process condensate from the final separator is used to wash out the methanol in a scrubbing column. By cooling the streams to the column and inserting a number of individual wash trays in the column, a practically quantitative removal of methanol is possible.
    Type: Application
    Filed: June 14, 2017
    Publication date: May 23, 2019
    Applicant: Haldor Topsoe A/S
    Inventors: Christian Henrik Speth, Annette E. Krøll Jensen
  • AXIAL/RADIAL FLOW CONVERTER
    Publication number: 20190152791
    Abstract: In a cooled axial/radial flow converter, in which process gas passes from an outer annulus via a catalyst bed to an inner centre tube, the catalyst bed is divided into identical modules stacked on top of each other. The process gas reaches the catalyst through openings facing the outer annulus, passes axially down the catalyst bed of each module, leaves the module through collectors in the bottom thereof, and flows to the centre tube. The catalyst bed is cooled by cooling panels, in which the process gas is pre-heated to the reaction temperature, while at the same time the heat of reaction is partly removed from the catalyst bed. The converter is especially suitable as ammonia converter.
    Type: Application
    Filed: June 9, 2017
    Publication date: May 23, 2019
    Applicant: Haldor Topsøe A/S
    Inventor: Christian Henrik Speth
  • Method for cleaning process off- or engine exhaust gas
    Patent number: 10286360
    Abstract: Method for removal of soot, ash and metals or metal compounds, together with removal of NOx and SOx being present in process off-gasses or engine exhaust gasses.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: May 14, 2019
    Assignees: Haldor Topsoe A/S, Ecospray Technologies S.r.l.
    Inventors: Keld Johansen, Maurizio Archetti
  • Process for preparing esters of ?-hydroxy methionine from sugars
    Patent number: 10280136
    Abstract: A continuous flow process for the preparation of one or more esters of lactic acid and 2-hydroxy-3-butenoic acid or ?-hydroxy methionine analogs from a sugar in the presence of a solid Lewis acid catalyst and a solvent comprising an organic solvent and water. The invention provides a stabilized Lewis acid catalyst for use in a continuous reaction process, where the water is present in an amount of up to or equal to 10 vol. % of the organic solvent.
    Type: Grant
    Filed: September 17, 2018
    Date of Patent: May 7, 2019
    Assignee: Haldor Topsoe A/S
    Inventors: Irantzu Sadaba Zubiri, Esben Taarning
  • A PROCESS FOR THE PURIFYING OF A RAW GAS STREAM CONTAINING MAINLY C1-C5 HYDROCARBONS AND CARBON DIOXIDE, AND IMPURITIES OF ORGANIC AND INORGANIC SULFUR COMPOUNDS, HALOGENATED AND NON-HALOGENATED VOLATILE ORGANIC COMPOUNDS AND OXYGEN
    Publication number: 20190126199
    Abstract: A method for the purification of a raw gas stream by selective catalytic oxidation, in which organic and inorganic sulfur compounds, halogenated and non-halogenated volatile organic compounds are selectively oxidized without substantially oxidizing the lower hydrocarbons and the sulfur containing compounds present in the gas to sulfur trioxide and excess of oxygen is removed by oxidation of lower alcohols, ethers or hydrogen added to the raw gas stream upstream the catalytic oxidation.
    Type: Application
    Filed: May 10, 2017
    Publication date: May 2, 2019
    Applicant: Haldor Topsøe A/S
    Inventors: Kresten Egeblad, Niklas Bengt Jakobsson, Jacob Hjerrild Zeuthen, Rasmus Trane-Restrup
  • METHOD FOR THE REMOVAL OF OXYGEN FROM AN INDUSTRIAL GAS
    Publication number: 20190126201
    Abstract: Oxygen is removed from a gas feed such as a landfill gas, a digester gas or an industrial CO2 off-gas by removing sulfur-containing compounds and siloxanes from the feed gas, heating the feed gas, injecting one or more reactants for oxygen conversion into the heated feed gas, carrying out a selective catalytic oxygen conversion in at least onesuitable reactor and cleaning the resulting oxygen-depleted gas. The reactants to be injected comprise one or more of H2, CO, ammonia, urea, methanol, ethanol and dimethylether (DME).
    Type: Application
    Filed: May 3, 2017
    Publication date: May 2, 2019
    Applicant: Haldor Topsøe A/S
    Inventors: Niklas Bengt Jakobsson, Kresten Egeblad, Jacob Hjerrild Zeuthen, Rasmus Trane-Restrup
  • A METHANOL SYNTHESIS PROCESS LAYOUT FOR LARGE PRODUCTION CAPACITY
    Publication number: 20190126231
    Abstract: A process layout for large scale methanol synthesis comprises one or more boiling water reactors and one or more radial flow reactors in series, the boiling water reactor(s) being fed with approximately fresh make-up syngas. The methanol synthesis loop comprises a make-up gas compressor K1, a recycle gas compressor K2, two or more boiling water converters for methanol synthesis (A1, A2, . . . ), a radial flow converter (B) for methanol synthesis, a steam drum (V1), a high pressure separator (V2), a low pressure separator (V3), feed effluent heat exchangers (E1 and E2), a wash column (C), an air cooler (E3) and a water cooler (E4).
    Type: Application
    Filed: March 23, 2017
    Publication date: May 2, 2019
    Applicant: Haldor Topsøe A/S
    Inventor: Hassan Modarresi
  • FILTER BAG ASSEMBLY COMPRISING CATALYTIC MATERIAL
    Publication number: 20190118126
    Abstract: Filter bag assembly for use in cleaning of process gas comprising an outer filter bag and one or more inner filter bags separately arranged within the outer filter bag, and said one or more inner filter bags also separately arranged within each other, the one or more inner filter bags and the outer filter bags are provided with catalytically active material.
    Type: Application
    Filed: July 3, 2017
    Publication date: April 25, 2019
    Applicant: Haldor Topsøe A/S
    Inventors: Thomas Holten Kollin, Kim Hougaard Pedersen, Viggo Lucassen Hansen
  • Catalyst thermal regeneration by exhaust gas
    Patent number: 10247078
    Abstract: Method and system for thermal regeneration of a catalyst by inlet turbine exhaust gas from a diesel engine, where a gas split stream (08) is led from the engine exhaust (02) through an eductor (04) and further to regeneration of a catalyst, wherein a cold air stream (09) is used to keep the regeneration gas stream at a desired constant temperature range.
    Type: Grant
    Filed: July 24, 2015
    Date of Patent: April 2, 2019
    Assignees: Haldor Topsoe A/S, Ecospray Technologies S.r.l.
    Inventor: Maurizio Archetti
  • Multiple element support beam
    Patent number: 10246875
    Abstract: The present application relates to a vessel support beam comprising two or more beam elements wherein each beam element comprises a first and second opposing long side connected by a top side, a lower side and two opposing end sides, said beam elements are arranged parallelly with at least one long side of one beam element facing a long side of another beam element, thereby forming a reactor support beam having a first and second opposing long side surface, a top surface and a lower surface.
    Type: Grant
    Filed: May 22, 2015
    Date of Patent: April 2, 2019
    Assignee: Haldor Topsoe A/S
    Inventors: Peer Thaarup Kjeldgaard Clausen, Kunal Dinesh Shah, Klaus Risbjerg Jarlkov
  • Hydrogen rejection in methanol to hydrocarbon process with bifunctional catalyst
    Patent number: 10239801
    Abstract: The present application relates to a process for production of hydrocarbons comprising the steps of: converting a feed stream comprising alcohols, ethers or mixtures hereof over a Zn-containing zeolite based catalyst wherein Zn is at least partly present as ZnAl2O4, active in dehydrogenation of hydrocarbons, in a conversion step thereby obtaining a conversion effluent, separating said effluent to obtain an aqueous process condensate stream, a liquid hydrocarbon stream and a gaseous stream, removing part of the hydrogen formed in the conversion step, and recycling at least part of the gaseous and/or liquid hydrocarbon stream to the conversion step.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: March 26, 2019
    Assignee: Haldor Topsoe A/S
    Inventors: Uffe Vie Mentzel, Finn Joensen
  • Gasket free grid modules for catalyst support and a modular system hereof
    Patent number: 10232334
    Abstract: A grid module (2a, 2b) for a catalyst support comprising one or more sides arranged with a module connecting part (11) to engage in a tongue/groove connection with a matching receiving connecting part (8a, 8b) on an external structure (7a, 7b).
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: March 19, 2019
    Assignee: Haldor Topsoe A/S
    Inventor: Jesper Rune Bergstrøm
  • BIFUNCTIONAL CATALYST COMPRISING EVENLY DISTRIBUTED PHOSPHOROUS
    Publication number: 20190076830
    Abstract: A bifunctional catalyst for conversion of oxygenates, said bifunctional catalyst comprising zeolite, alumina binder, Zn and P, wherein P is evenly distributed across the catalyst.
    Type: Application
    Filed: November 30, 2016
    Publication date: March 14, 2019
    Applicant: Haldor Topsøe A/S
    Inventors: Finn Joensen, Uffe Vie