Method for removing nitrogen oxides from nitrogen oxide-containing gases
US4146450A · kind A · utility
9Cited by
3References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 30, 1977 |
| Grant date | Mar 27, 1979 |
| Priority date | — |
| Expiry date | Dec 30, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D53/8625
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
There is disclosed a method for removing nitrogen oxides from a nitrogen oxide-containing gas by contacting the gas with ammonia excited by ultraviolet irradiation in the presence of a catalyst to react the nitrogen oxides with the ammonia. According to the method, the reaction of nitrogen oxides with ammonia proceeds more rapidly than in the case of prior art methods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.