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公开(公告)号：US10675585B2
公开(公告)日：2020-06-09
申请号：US16093998
申请日：2017-05-03
Applicant: HALDOR TOPSØE A/S
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).
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公开(公告)号：US20200147547A1
公开(公告)日：2020-05-14
申请号：US16473436
申请日：2018-02-07
Applicant: Haldor Topsøe A/S
Inventor： Kresten Egeblad , Niklas Bengt Jakobsson , Rasmus Trane-Restrup , Jacob Hjerrild Zeuthen , Troels Dahlgaard Stummann
Abstract: Oxygen is removed from a gas feed such as a landfill gas, a digester gas or an industrial CO2 off-gas by heating the feed gas, optionally removing siloxanes and silanols from the heated feed gas, optionally removing part of the sulfur-containing compounds in the heated feed gas, injecting one or more reactants for oxygen conversion into the heated feed gas, carrying out a selective catalytic conversion of any or all of the volatile organic compounds (VOCs) present in the gas, including sulfur-containing compounds, chlorine-containing compounds and any of the reactants injected, in at least one suitable 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 dimethyl ether (DME).
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公开(公告)号：US20190329180A1
公开(公告)日：2019-10-31
申请号：US16310096
申请日：2017-10-03
Applicant: Haldor Topsøe A/S
Inventor： Janus Emil Münster-Swendsen , Niklas Bengt Jakobsson
Abstract: A process for the cleaning of a lean gas stream contaminated with volatile organic compounds and/or sulfur-containing compounds comprises the steps of adding ozone to the contaminated lean gas stream and contacting the resulting ozone-containing gas stream with a catalytic device at a temperature down to room temperature. Depending on the content of particulates in the lean gas stream, the catalytic device is either a monolithic catalyst or a catalytic bag filter, both impregnated with a catalyst containing one or more metal oxides, in which the metal is selected from vanadium, tungsten, palladium and platinum.
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14.发明申请公开(公告)号：US20160040311A1
公开(公告)日：2016-02-11
申请号：US14780462
申请日：2013-03-26
Applicant: HALDOR TOPSØE A/S
Inventor： Niklas Bengt Jakobsson , Claus Friis Pedersen , John Bøgild Hansen
IPC: C25B15/08 , B01D53/047 , C25B15/02 , C25B1/00 , C25B9/18
CPC classification number: C25B15/08 , B01D53/047 , B01D2253/102 , B01D2253/104 , B01D2253/1122 , B01D2253/1124 , B01D2256/20 , B01D2257/504 , B01D2259/402 , C25B1/00 , C25B9/00 , C25B9/18 , C25B15/00 , C25B15/02 , Y02E60/366
Abstract: The invention concerns a process for producing carbon monoxide (CO) from carbon dioxide (CO2) in a solid oxide electrolysis cell (SOEC) or SOEC stack, wherein CO2 is led to the fuel side of the stack with an applied current and excess oxygen is transported to the oxygen side of the stack, optionally using air or nitrogen to flush the oxygen side, and wherein the product stream from the SOEC, containing CO mixed with CO2, is subjected to a separation process. The process further comprises heating the inlet gas on both the fuel side and the oxygen side by means of separate heating units, so as to supply heat to the SOEC, where the operation temperature of said heating units is at least equal to the operation temperature of the cell stack minus 50° C., preferably at least equal to the operation temperature of the cell stack.
Abstract translation: 本发明涉及一种在固体氧化物电解池（SOEC）或SOEC堆中从二氧化碳（CO 2）生产一氧化碳（CO）的方法，其中CO 2以施加的电流被引导到堆的燃料侧，过量的氧是 运送到堆的氧气侧，任选地使用空气或氮气冲洗氧气侧，并且其中来自含有与CO混合的CO的SOEC的产物流经受分离过程。 该方法还包括通过单独的加热单元加热燃料侧和氧气侧的入口气体，以便向SOEC供应热量，其中所述加热单元的操作温度至少等于 电池堆减去50℃，优选至少等于电池堆的工作温度。
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公开(公告)号：US11198093B2
公开(公告)日：2021-12-14
申请号：US16331162
申请日：2017-09-11
Applicant: HALDOR TOPSØE A/S
Inventor： Niklas Bengt Jakobsson , Peter Bo Olsen , Per Aggerholm Sørensen , Anders Theilgaard Madsen
IPC: B01D53/86 , B01D53/00 , B01D53/04 , B01D53/50 , B01D53/75 , C01B17/04 , C01B17/56 , B01J21/08 , B01J23/22 , D01F13/02
Abstract: 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.
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Patent Agency Ranking
16.发明申请公开(公告)号：US20210101111A1
公开(公告)日：2021-04-08
申请号：US16479651
申请日：2018-02-26
Applicant: Haldor Topsøe A/S
Abstract: Process for cleaning an off-gas containing sulphur oxides (SOx), nitrogen oxides (NOx) and particulate matter employing SOx adsorption and ammonia-SCR in one filtration unit, in particular a filter bag house with one or more catalysed fabric filter assemblies.
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公开(公告)号：US20200368684A1
公开(公告)日：2020-11-26
申请号：US15930180
申请日：2020-05-12
Applicant: Haldor Topsøe A/S
Inventor： Janus Emil Münster-Swendsen , Niklas Bengt Jakobsson
IPC: B01D53/86 , B01J29/76 , B01J23/22 , B01J23/72 , B01J23/34 , B01J23/44 , B01J23/42 , B01J35/04 , B01J35/00 , B01D53/90
Abstract: A process for the removal of nitrous oxide (N2O) contained in a process off-gas in an axial flow reactor. The process includes the steps of (a) adding an amount of reducing agent into the process off-gas; (b) in a first stage passing in axial flow direction the process off-gas admixed with the reducing agent through a first monolithic shaped catalyst active in decomposing nitrous oxide by reaction with the reducing agent to provide a gas with a reduced amount of nitrous oxide and residual amounts of reducing agent; and (c) in a second stage passing the gas with a reduced amount of nitrous oxide and residual amounts of the reducing agent in axial flow direction through a second monolithic shaped catalyst active in oxidation of the residual amounts of the reducing agent.
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18.发明申请公开(公告)号：US20190255484A1
公开(公告)日：2019-08-22
申请号：US16331162
申请日：2017-09-11
Applicant: HALDOR TOPSØE A/S
Inventor： Niklas Bengt Jakobsson , Peter Bo Olsen , Per Aggerholm Sørensen , Anders Theilgaard Madsen
IPC: B01D53/86 , B01D53/75 , B01D53/00 , B01D53/50 , B01D53/04 , D01F13/02 , B01J23/22 , B01J21/08 , C01B17/04 , C01B17/56
Abstract: 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.
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公开(公告)号：US20190126201A1
公开(公告)日：2019-05-02
申请号：US16093998
申请日：2017-05-03
Applicant: Haldor Topsøe A/S
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).
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公开(公告)号：US10053788B2
公开(公告)日：2018-08-21
申请号：US14763226
申请日：2013-01-25
Applicant: Haldor Topsøe A/S
Inventor： Claus Friis Pedersen , Lone Bech , Thomas Heiredal-Clausen , Niklas Bengt Jakobsson
CPC classification number: C25B15/02 , C25B1/10 , Y02E60/366
Abstract: The invention concerns a process for monitoring failure situations related to feed and/or purge flow in electrolyzer cells, stacks or systems, said monitoring process being combined with appropriate actions to be taken in case of such failure situations, wherein (a) the current and/or the voltage are monitored and controlled over a single cell, over all the cells or over one or more selected cells in a stack or a system of stacks, (b) in case the current, the voltage or the ratio between voltage and current crosses its pre-defined threshold value, a failure mode is detected and communicated to the control system, and c) the voltage levels of the system are adjusted to be within safe limits (safe-mode limits).
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