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.

公开(公告)号：US10723964B2

公开(公告)日：2020-07-28

申请号：US15759558

申请日：2016-09-09

Applicant: HALDOR TOPSØE A/S

Inventor： Niklas Bengt Jakobsson ,  Kurt Agerbæk Christensen

IPC: C10L3/00 ,  B01J23/22 ,  B01D53/86 ,  B01D53/50 ,  B01J35/04

Abstract: A combustible gas from carbon black production is utilized in a gas engine by adding an oxygen-containing gas to the combustible gas, passing said mixed gas over a selective catalyst, which is active for oxidizing H2S to SO2 but substantially inactive for oxidation of CO, H2 and other hydrocarbons with less than 4 C-atoms, passing the converted gas through an SO2 removal step, and passing the cleaned gas to a gas engine or to an energy recovery boiler. This way, the tail gas from carbon black production, which is normally combusted in a CO boiler or incinerated, can be utilized to good effect.

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

IPC: B01D53/81 ,  B01D53/50 ,  B01D53/72 ,  B01D53/75 ,  B01D53/86

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.

公开(公告)号：US11753700B2

公开(公告)日：2023-09-12

申请号：US16608941

申请日：2018-04-16

Applicant: HALDOR TOPSØE A/S

Inventor： Artem Tarasenko ,  Niklas Bengt Jakobsson ,  Bengt Peter Gustav Blennow ,  Casper Hadsbjerg

IPC: C22B15/00 ,  C25B1/23

CPC classification number: C22B15/006 ,  C25B1/23

Abstract: The content of oxygen in molten metallic copper is reduced during the copper refining process by adding pure carbon monoxide, produced by electrolysis of carbon dioxide in a solid oxide electrolysis cell (SOEC), thereby removing oxygen through the reduction of CuO to Cu. This way, the purity of the metallic copper is increased.

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

IPC: C01B17/04 ,  B01D53/14 ,  B01D53/86

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.

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.

公开(公告)号：US20170239618A1

公开(公告)日：2017-08-24

申请号：US15507841

申请日：2015-09-09

Applicant: HALDOR TOPSØE A/S

Inventor： Souheil Saadi ,  Niklas Bengt Jakobsson

IPC: B01D53/86 ,  C01B17/50 ,  C01B17/765 ,  B01D46/24 ,  B01D53/50

CPC classification number: B01D53/8612 ,  B01D46/2407 ,  B01D53/502 ,  B01D53/508 ,  B01D53/869 ,  B01D2251/11 ,  B01D2251/404 ,  B01D2251/604 ,  B01D2255/1023 ,  B01D2255/2065 ,  B01D2255/20723 ,  B01D2255/2073 ,  B01D2255/20761 ,  B01D2255/20769 ,  B01D2255/20776 ,  B01D2255/20784 ,  B01D2255/904 ,  B01D2257/302 ,  B01D2257/304 ,  C01B17/508 ,  C01B17/74 ,  C01B17/765 ,  Y02P20/129

Abstract: A process for the oxidation of hydrogen sulfide to sulfur trioxide with subsequent sulfur trioxide removal comprises oxidizing hydrogen sulfide to sulfur trioxide in at least one catalyst-containing reactor and feeding the effluent from the last reactor to a candle filter unit for SO3 removal, where it is mixed with an injected alkaline sorbent slurry or powder to form an alkali sulfate and a hot clean gas. Preferably the oxidation is done in two reactors, the first oxidizing H2S to SO2 over a monolith type catalyst and the second oxidizing SO2 to SO3 over a VK type catalyst.

公开(公告)号：US20170080376A1

公开(公告)日：2017-03-23

申请号：US15312000

申请日：2015-05-28

Applicant: HALDOR TOPSØE A/S

Inventor： Niklas Bengt Jakobsson ,  Joakim Reimer Thøgersen

IPC: B01D53/04 ,  B01J20/10 ,  B01J20/08 ,  B01J20/28 ,  B01J20/32

CPC classification number: B01D53/0462 ,  B01D53/02 ,  B01D53/62 ,  B01D53/82 ,  B01D2253/104 ,  B01D2253/25 ,  B01D2253/304 ,  B01D2253/311 ,  B01D2253/342 ,  B01D2253/3425 ,  B01D2257/504 ,  B01D2258/0283 ,  B01J20/08 ,  B01J20/103 ,  B01J20/2804 ,  B01J20/28042 ,  B01J20/28045 ,  B01J20/3204 ,  B01J20/3236 ,  B01J20/3433 ,  B01J20/3483 ,  Y02C10/08

Abstract: The invention relates to a gas treatment monolith article, said gas treatment article comprising: a full body porous material comprising a porous substrate and an aluminium oxide coating homogeneously distributed throughout said porous substrate, wherein said porous substrate is a fibrous material; and at least one acid gas absorption active component or a precursor thereof impregnated into said porous aluminium oxide coated substrate. The invention further relates to uses of the gas treatment monolith article of the invention.

公开(公告)号：US10933372B2

公开(公告)日：2021-03-02

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

IPC: B01D53/02 ,  B01D53/34 ,  B01D53/50 ,  B01D53/75 ,  B01D53/86

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).

公开(公告)号：US10722843B2

公开(公告)日：2020-07-28

申请号：US16477934

申请日：2018-01-11

Applicant: HALDOR TOPSØE A/S

Inventor： Hans Qiongxiao Wu ,  Tommy Bian Xiang ,  Niklas Bengt Jakobsson ,  Rasmus Trane-Restrup ,  Souheil Saadi

IPC: B01D53/86 ,  B01J35/04 ,  C01B17/50

Abstract: The present invention relates to a method and a system for catalytic oxidation of a lean H2S stream. More specifically, the invention concerns a novel way of removing sulfur dioxide (SO2) formed by catalytic oxidation of hydrogen sulfide (H2S) with the purpose of removing H2S from a gas. This catalytic oxidation of H2S yields sulfur dioxide (SO2) through the use of known catalysts, so-called SMC catalysts.