Title:
SYSTEM FOR REMOVING PARTICULATE MATTER AND NOXIOUS COMPOUND FROM ENGINE EXHAUST GAS
Document Type and Number:
Japanese Patent JP2021042760
Kind Code:
A
Abstract:
To provide a system for removing particulate matter and noxious compounds from an engine exhaust gas.SOLUTION: There is provided a system for removing noxious compounds and particulate matter from an exhaust gas of a compression ignition engine, including a three-way catalyst unit having NH3-SCR activity, ammonia oxidation activity, and adsorption activity of volatile vanadium and tungsten compounds volatilized off from upstream SCR active catalyst. By combining the vanadium and tungsten adsorption agents and an ammonia oxidation catalyst, vanadium oxide and tungsten oxide as an effective amount of SCR catalyst and an ammonia reducing agent in excess of stoichiometric amount in SCR reaction are used in the system for removing the particulate matter and noxious compounds (including nitrogen oxide) from the engine exhaust gas.SELECTED DRAWING: Figure 2
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Inventors:
KELD JOHANSEN
TON V W JANSSENS
TON V W JANSSENS
Application Number:
JP2020184155A
Publication Date:
March 18, 2021
Filing Date:
November 04, 2020
Export Citation:
Assignee:
UMICORE AG & CO KG
International Classes:
F01N3/08; B01D53/94; B01J23/652; F01N3/022; F01N3/10; F01N3/28
Domestic Patent References:
| JP2018529039A | 2018-10-04 | |||
| JP2013513478A | 2013-04-22 |
Foreign References:
| US20090205325A1 | 2009-08-20 | |||
| US20140154163A1 | 2014-06-05 |
Attorney, Agent or Firm:
Hidesaku Yamamoto
Natsuki Morishita
Takatoshi Iida
Daisuke Ishikawa
Kensaku Yamamoto
Natsuki Morishita
Takatoshi Iida
Daisuke Ishikawa
Kensaku Yamamoto