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Title:
OHMIC HEATING-TYPE EXHAUST GAS PURIFICATION CATALYST SYSTEM AND EXHAUST GAS PURIFICATION METHOD
Document Type and Number:
WIPO Patent Application WO/2022/172804
Kind Code:
A1
Abstract:
The present invention provides an ohmic heating-type exhaust gas purification catalyst system. This ohmic heating-type exhaust gas purification catalyst system is configured to perform the following electroconduction controls on the basis of information regarding the temperature of a catalyst bed input from a temperature detection unit of an ohmic heating-type catalyst device: (1) passing an electric current through a pair of electrodes when the temperature of the catalyst bed is no higher than a first threshold temperature T1 set in the range of 350 ± 25°C; (2) not passing an electric current through the pair of electrodes when the temperature of the catalyst bed exceeds the first threshold temperature T1 and is no higher than a second threshold temperature T2 set in the range of 450 ± 25°C; (3) passing electric current through the pair of electrodes when the temperature of the catalyst bed exceeds the second threshold temperature T2 and is no more than a third threshold temperature T3 set to 550 °C or higher; and (4) not passing electric current through the pair of electrodes when the temperature of the catalyst bed exceeds the third threshold temperature T3.

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Inventors:
ONOE RYOTA (JP)
HORI JUNICHI (JP)
TAKASU RYOSUKE (JP)
OHASHI TATSUYA (JP)
OISHI SHUNSUKE (JP)
Application Number:
PCT/JP2022/003731
Publication Date:
August 18, 2022
Filing Date:
February 01, 2022
Export Citation:
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Assignee:
CATALER CORP (JP)
International Classes:
B01J35/02; B01D53/94; B01J35/04; F01N3/10; F01N3/20; F01N3/28; F02D29/02
Foreign References:
JPH03169343A1991-07-23
JPH03169342A1991-07-23
JP2019157733A2019-09-19
JP2000179331A2000-06-27
JP2021019606A2021-02-18
JP2004176592A2004-06-24
JP2005233066A2005-09-02
Attorney, Agent or Firm:
ABE, Makoto (JP)
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