Method for removing sulfur and nitrogen compounds from a gas mixture
US4167578A · kind A · utility
4Cited by
13References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 22, 1977 |
| Grant date | Sep 11, 1979 |
| Priority date | — |
| Expiry date | Sep 22, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A50/20
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The Air Quality Control System utilizes the reaction between nitrogen oxides and the sulfites and bisulfites which are produced as a slurry of lime/limestone absorbs sulfur dioxide from a mixture of gases to produce ammonia from the absorption of nitrogen oxides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.