Abatement of mercury in flue gas
US7833500B1 · kind B1 · utility
5Cited by
10References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 17, 2009 |
| Grant date | Nov 16, 2010 |
| Priority date | — |
| Expiry date | Feb 17, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2257/602
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention provides a method for the oxidation of Hg0 in coal fired flue gas to form Hg2+ which is absorbed by the scrubber solution in wet-FGD or SDA, or adsorbed by the fly ash and subsequently removed from the flue stack with ESP and FF, and/or any other means as are known in the art for SOx, NOx and particulate removals. The addition of a second flue gas stream having a halogen and fly ash therein simultaneously with said hydrogen halogen or interhalogens into a coal fired flue gas further increases the oxidation of Hg0 to Hg2+.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.