Process for removing sulfur oxides and nitrogen oxides from flue gases
US4174373A · kind A · utility
76Cited by
5References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 29, 1975 |
| Grant date | Nov 13, 1979 |
| Priority date | — |
| Expiry date | Aug 29, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A50/20
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A catalyst comprising carbonaceous materials such as activated carbon, etc. impregnated with bromine, iodine, chlorine or their compounds, is impregnated with a promoter containing a specific metal, and brought in contact with a flue gas in the presence of ammonia, whereby nitrogen oxides and sulfur oxides contained in the flue gas are removed with a very high percent removal. The removal can be carried out at a temperature much lower than that of the conventional process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.