Denitration catalyst regeneration method and denitration catalyst regeneration system
US12128393B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 19, 2019 |
| Grant date | Oct 29, 2024 |
| Priority date | — |
| Expiry date | Aug 7, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J23/22
- WIPO fieldChemical engineering
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.