Method and apparatus for removing mercury species from hot flue gas
US6960329B2 · kind B2 · utility
80Cited by
8References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 12, 2002 |
| Grant date | Nov 1, 2005 |
| Priority date | — |
| Expiry date | Oct 1, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02C20/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of removing mercury from flue gas containing mercury and particulate solids emanating from a fossil-fuel energy conversion plant and passing through a flue gas duct. The method includes (a) contacting the mercury in the flue gas with a solution containing at least one chloride-containing salt dissolved in a solvent by injecting the solution into the flue gas duct at an injection location, in order to oxidize mercury into HgCl2, (b) heating the solution prior to or after step (a) to at least about 300° C., and (c) removing oxidized mercury from the flue gas with a device for removing particulate solids from the flue gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.