公开(公告)号：US20190001266A1

公开(公告)日：2019-01-03

申请号：US16064169

申请日：2016-12-20

Applicant: SHELL OIL COMPANY

Inventor： Guido SENG ,  Wassim KLINK ,  Wenzhong ZHANG ,  Andreas KLEMT ,  Paul Benjerman HIMELFARB

IPC: B01D53/86

Abstract: A catalyst bed comprising a ceramic or metallic foam comprising one or more NOx reduction catalysts is described. Further, a method for reducing the concentration of NOx in a dust containing gas stream comprising: a) passing a first gas stream containing NOx into a contacting zone; b) contacting the first gas stream with a ceramic or metallic foam catalyst bed having one or more flow paths through the catalyst bed wherein the ceramic or metallic foam comprises a NOx reduction catalyst to produce a second gas stream with a reduced NOx concentration; and c) passing the second gas stream out of the contacting zone wherein the first gas stream has a dust concentration of at least 5 mg/Nm3 and the second gas stream comprises at least 50% of the amount of dust in the first gas stream.

公开(公告)号：US20180369800A1

公开(公告)日：2018-12-27

申请号：US16064240

申请日：2016-12-20

Applicant: SHELL OIL COMPANY

Inventor： Wassim KLINK ,  Guido SENG ,  Wenzhong ZHANG ,  Andreas KLEMT ,  Paul Benjerman HIMELFARB

IPC: B01J35/04 ,  B01J37/00 ,  B01J21/16 ,  B01J21/06 ,  B01J21/04 ,  B01J23/745 ,  B01J23/755 ,  B01J23/22 ,  B01J23/28 ,  B01J23/30 ,  B01D53/86

Abstract: A catalyst bed comprising a ceramic or metallic foam comprising one or more NOx reduction catalysts is described. A method for reducing the concentration of NOx in a dust containing gas stream comprising: a) passing a first gas stream containing NOx into a contacting zone; b) contacting the first gas stream with a ceramic or metallic foam catalyst bed having one or more flow paths through the catalyst bed wherein the ceramic or metallic foam comprises a NOx reduction catalyst to produce a second gas stream with a reduced NOx concentration; and c) passing the second gas stream out of the contacting zone wherein the first gas stream has a dust concentration of at least 5 mg/Nm3 and the pressure drop of the foam catalyst bed increases by 300% or less relative to the initial pressure drop of the foam catalyst bed due to dust accumulation, measured under the same conditions is also described.

公开(公告)号：US20180369753A1

公开(公告)日：2018-12-27

申请号：US16064200

申请日：2016-12-20

Applicant: SHELL OIL COMPANY

Inventor： Wassim KLINK ,  Guido SENG ,  Wenzhong ZHANG ,  Andreas KLEMT ,  Paul Benjerman HIMELFARB

IPC: B01D53/86 ,  F01N3/28 ,  B01J35/04 ,  B01J21/16 ,  B01J23/22 ,  B01J23/28 ,  B01J23/30

Abstract: A reactor for reducing the concentration of NO x in a stream comprising: an inlet for the stream; an outlet for a stream containing a reduced concentration of NOx; one or more catalyst beds comprising a ceramic or metallic foam with a NOx reduction catalyst; one or more flow paths from the inlet to the outlet that passes through at least one catalyst bed wherein the catalyst beds are closed at the top and bottom so that the flow path through the catalyst bed passes through the sides of the catalyst bed in a lateral flow is described.

公开(公告)号：US20200061539A1

公开(公告)日：2020-02-27

申请号：US16543107

申请日：2019-08-16

Applicant: SHELL OIL COMPANY

Inventor： Guido SENG

IPC: B01D53/96 ,  B01D53/86

Abstract: Presented is a process for the regeneration of a deactivated nitrogen oxide decomposition catalyst used for the selective catalytic reduction of nitrogen oxides contained in a flue gas stream.

公开(公告)号：US20200061538A1

公开(公告)日：2020-02-27

申请号：US16542989

申请日：2019-08-16

Applicant: SHELL OIL COMPANY

Inventor： Guido SENG

IPC: B01D53/96 ,  B01D53/34 ,  B01D53/86

Abstract: Presented is a process for the off-line regeneration of a deactivated nitrogen oxide decomposition catalyst of a selective catalytic reduction system that is a component of a flue gas treating system. The selective catalytic reduction system is isolated to allow for removal and replacement of deactivated SCR catalyst. The removed SCR catalyst may be regenerated off-line from the flue gas treating system. The off-line regenerated SCR catalyst can be used as a replacement SCR catalyst.

公开(公告)号：US20220111334A1

公开(公告)日：2022-04-14

申请号：US17466206

申请日：2021-11-22

Applicant: SHELL OIL COMPANY

Inventor： Wassim KLINK ,  Guido SENG ,  Wenzhong ZHANG ,  Andreas KLEMT ,  Paul Benjerman HIMELFARB

IPC: B01D53/86 ,  B01D53/94 ,  B01J21/16 ,  B01J23/22 ,  B01J23/28 ,  B01J23/30 ,  B01J35/04 ,  F01N3/28

Abstract: A reactor for reducing the concentration of NOx in a stream comprising: an inlet for the stream; an outlet for a stream containing a reduced concentration of NOx ; one or more catalyst beds comprising a ceramic or metallic foam with a NOx reduction catalyst; one or more flow paths from the inlet to the outlet that passes through at least one catalyst bed wherein the catalyst beds are closed at the top and bottom so that the flow path through the catalyst bed passes through the sides of the catalyst bed in a lateral flow is described.

公开(公告)号：US20200061537A1

公开(公告)日：2020-02-27

申请号：US16543035

申请日：2019-08-16

Applicant: SHELL OIL COMPANY

Inventor： Guido SENG

IPC: B01D53/94 ,  F23J15/02 ,  B01D53/56 ,  B01D53/96 ,  B01D53/90

Abstract: Presented is a process for the regeneration of a deactivated nitrogen oxide decomposition catalyst of a selective catalytic reduction system that is a component of a flue gas treating system that is one of parallel flue gas treating systems. The selective catalytic reduction system is isolated to provide a closed system in which a regeneration gas is circulated to regenerate the deactivated nitrogen oxide decomposition catalyst. Denitrified flue gas from a parallel flue gas treating system is introduced and used within the closed system as regeneration gas.