公开(公告)号：US09718685B2

公开(公告)日：2017-08-01

申请号：US15030985

申请日：2014-10-24

Applicant: Haldor Topsøe A/S

Inventor： Troels Dahlgaard Stummann ,  Niels Ulrik Andersen ,  Madhanakrishnan Janardhanan ,  Jens R. Rostrup-Nielsen

IPC: C07C1/04 ,  C07C29/151 ,  C07C29/152 ,  C01B3/12 ,  C01B3/16 ,  B01J8/04 ,  B01J8/00 ,  B01J7/00 ,  C07C29/154 ,  C07C29/156 ,  C07C29/157

CPC classification number: C01B3/16 ,  B01J7/00 ,  B01J8/001 ,  B01J8/0453 ,  B01J8/0492 ,  B01J2219/185 ,  B01J2219/1943 ,  C01B2203/0283 ,  C01B2203/061 ,  C01B2203/062 ,  C01B2203/142 ,  C07C1/041 ,  C07C1/043 ,  C07C1/0435 ,  C07C1/044 ,  C07C29/1512 ,  C07C29/152 ,  C07C29/154 ,  C07C29/156 ,  C07C29/157 ,  C07C2523/06 ,  C07C2523/28 ,  C07C2523/72 ,  C07C2523/745 ,  C07C2523/75 ,  C07C2523/755

Abstract: The present disclosure relates to a reactor and a method of operation for an exothermal process being catalyzed by a catalytically active material receiving a reactant gas and providing a product gas, in which said exothermal process has a heat development having a potential for thermally degrading said catalytically active material, and which exothermal process operates at a temperature at which the reactants and at least 80% or all of the products are present as gases, said method comprising the steps of a) directing the reactant gas to a first zone of a material catalytically active in the exothermal process producing an first product gas, and b) directing the first product gas to a second zone of a material catalytically active in the exothermal process producing a product gas, with the option of fully or partially by-passing either said first zone or said second zone, while directing a non-condensing gas stream having a temperature at least 50° C. lower than the product gas to said by-passed zone, wherein the choice of by-passing said zone is made based on the time of operation or a process parameter reflecting the catalytic activity of the zone of catalytically active material which is not by-passed with the associated benefit of reducing the extent of thermal deactivation of the catalytically active material, and thus increasing the overall lifetime of the catalytically active material.

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：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

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

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).