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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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Patent Agency Ranking
公开(公告)号：US11045763B2
公开(公告)日：2021-06-29
申请号：US16471792
申请日：2018-01-25
Applicant: Haldor Topsøe A/S
Inventor： Niklas Bengt Jakobsson , Peter Bo Olsen , Janus Emil Münster-Swendsen
Abstract: The present application relates to a process for treating the off gas from a carbon black process, said process comprising the steps of: providing an off gas from a carbon black process, reacting said off gas in a first reaction step forming water and S, and condensing the S at a temperature Tcon where S is in a liquid phase and the water is in gas form thereby achieving a gaseous stream comprising water and a liquid stream comprising S, and wherein the first reaction step is carried out over a monolith catalyst.
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3.发明申请公开(公告)号：US20190217240A1
公开(公告)日：2019-07-18
申请号：US16331447
申请日：2017-09-11
Applicant: Haldor Topsøe A/S
Inventor： Janus Emil Münster-Swendsen , Niklas Bengt Jakobsson
IPC: B01D53/00 , B01J21/06 , B01J23/22 , B01J23/648 , B01J35/06 , B01D53/44 , B01D53/76 , B01D53/86 , B01D46/02 , B01D46/00
CPC classification number: B01D53/007 , B01D46/0027 , B01D46/02 , B01D53/44 , B01D53/76 , B01D53/8675 , B01D53/8687 , B01D53/869 , B01D2251/104 , B01D2255/1021 , B01D2255/1023 , B01D2255/20707 , B01D2255/20723 , B01D2255/20776 , B01D2257/304 , B01D2257/306 , B01D2257/708 , B01D2258/06 , B01D2259/804 , B01D2275/10 , B01J21/063 , B01J23/22 , B01J23/6482 , B01J35/06
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.
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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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公开(公告)号：US11179674B2
公开(公告)日：2021-11-23
申请号：US15930180
申请日：2020-05-12
Applicant: Haldor Topsøe A/S
Inventor： Janus Emil Münster-Swendsen , Niklas Bengt Jakobsson
IPC: F01N13/00 , B01D53/86 , B01D53/90 , B01J23/22 , B01J23/34 , B01J23/42 , B01J23/44 , B01J23/72 , B01J29/76 , B01J35/00 , B01J35/04
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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6.发明授权公开(公告)号：US10682607B2
公开(公告)日：2020-06-16
申请号：US16306608
申请日：2017-06-13
Applicant: Haldor Topsøe A/S
Inventor： Niklas Bengt Jakobsson , Janus Emil Münster-Swendsen
Abstract: A process for combined removal of siloxanes and sulfur-containing compounds from biogas streams, such as streams from landfills or anaerobic digesters, comprises heating the biogas stream and optionally mixing it with air, feeding the gas to a first filter unit with high temperature resistance, injecting a dry sorbent into the first filter unit to capture siloxanes present in the gas, recycling part of the exit gas from the first filter unit to the inlet thereof for the sulfur-containing compounds to be captured by the dry sorbent or optionally to a second filter unit inlet for the sulfur-containing compounds to be captured by a sulfur-specific sorbent and recovering clean gas from the first or optionally from the second filter unit.
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