Title:
DENITRATION CATALYST REGENERATION METHOD AND DENITRATION CATALYST REGENERATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2020/194851
Kind Code:
A1
Abstract:
Provided are a denitration catalyst regeneration method and a denitration catalyst regeneration system, which are capable of recovering denitration performance to a high level and reducing the SO2 oxidation rate of a catalyst. A denitration catalyst regeneration method according to the present invention includes: a chemical solution cleaning step for immersing a denitration catalyst in a chemical solution containing a fluorine compound and an inorganic acid; a step for extracting the denitration catalyst from the chemical solution; and a finish washing step for washing the denitration catalyst extracted from the chemical solution with a finish cleaning solution containing an organic acid.
Inventors:
IWAMOTO KAZUHIRO (JP)
YONEMURA MASANAO (JP)
NOCHI KATSUMI (JP)
WATANABE YOSHIHARU (JP)
DEMOTO MASANORI (JP)
YONEMURA MASANAO (JP)
NOCHI KATSUMI (JP)
WATANABE YOSHIHARU (JP)
DEMOTO MASANORI (JP)
Application Number:
PCT/JP2019/045293
Publication Date:
October 01, 2020
Filing Date:
November 19, 2019
Export Citation:
Assignee:
MITSUBISHI HITACHI POWER SYS (JP)
International Classes:
B01J38/60; B01D53/86; B01D53/96; B01J23/92; B01J38/54
Domestic Patent References:
| WO2017010402A1 | 2017-01-19 | |||
| WO2019004123A1 | 2019-01-03 |
Foreign References:
| JP2011031237A | 2011-02-17 | |||
| JP2012024669A | 2012-02-09 |
Attorney, Agent or Firm:
OKUYAMA, Shoichi et al. (JP)
Download PDF: