Method of waste gas treatment
US4049777A · kind A · utility
8Cited by
3References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 20, 1976 |
| Grant date | Sep 20, 1977 |
| Priority date | — |
| Expiry date | May 20, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D53/8625
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Waste gas, for example exhaust gas from an adipic acid production process, containing nitrogen oxides and a high proportion of oxygen and/or oxygen compounds is treated to remove the nitrogen oxides by reducing the nitrogen oxides with ammonia at an elevated temperature in the presence of a catalyst comprising an iron oxide and a chromium oxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.