Method for treating arsenic-containing flue gas
US12097461B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 9, 2021 |
| Grant date | Sep 24, 2024 |
| Priority date | — |
| Expiry date | Jul 29, 2042 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D46/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for treating arsenic-containing flue gas is disclosed. In the method, the arsenic-containing flue gas is subjected to a dry pre-dedusting treatment, and the dedusted flue gas is pre-cooled and then introduced into a vortex quenching system. The arsenic-containing flue gas is divided into high-temperature flue gas and low-temperature flue gas through the vortex quenching system. The outlet temperature of the low-temperature flue gas is dropped below the desublimation temperature of gaseous arsenic trioxide. The low-temperature flue gas is subjected to a gas-solid separation to obtain solid arsenic trioxide and treated flue gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.