Title:
METHOD FOR MANUFACTURING EXHAUST GAS PURIFICATION CATALYST DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/210323
Kind Code:
A1
Abstract:
A method for manufacturing an exhaust gas purification catalyst device, the method including: (A) disposing a substrate such that open ends on one side of a plurality of cell flow paths face upward and such that open ends on the other side face downward, installing a coating liquid retention tool having a retention wall at the upper-end section of the substrate, and forming a coating liquid retention part; (B) supplying a coating liquid for forming a catalyst coat layer to the coating liquid retention part; (C) reducing the pressure within the cell flow paths to below the pressure of the coating liquid retention part, thereby coating partition walls of the substrate with the coating liquid for forming a catalyst coat layer; (D) spraying the inner side of the retention wall of the coating liquid retention tool with compressed air from above; and (E) firing the substrate coated with the coating liquid for forming a catalyst coat layer, the step (C) and the step (D) being performed simultaneously.
Inventors:
KURATA YASUYOSHI (JP)
ATSUMI KEN (JP)
ATSUMI KEN (JP)
Application Number:
PCT/JP2023/014523
Publication Date:
November 02, 2023
Filing Date:
April 10, 2023
Export Citation:
Assignee:
CATALER CORP (JP)
International Classes:
B01J37/02; B01D53/94; B01J37/08
Foreign References:
| JP2009297691A | 2009-12-24 | |||
| JP2000084417A | 2000-03-28 | |||
| JP2018047398A | 2018-03-29 | |||
| JP2019181395A | 2019-10-24 |
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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