Method of and apparatus for removing nitrogen oxides from the gases containing nitrogen oxides
US4199554A · kind A · utility
10Cited by
6References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 30, 1977 |
| Grant date | Apr 22, 1980 |
| Priority date | — |
| Expiry date | Dec 30, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S502/515
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Disclosed herein is a method of removing the nitrogen oxides from the gases containing nitrogen oxides by contacting any such gas with ammonia at a temperature of from 100.degree. C. to 230.degree. C. in the presence of a catalyst so that a reaction takes place between the nitrogen oxides and ammonia. This reaction is conducted in such a manner as to prevent the by-produced ammonium nitrate from depositing on the catalyst. There is also disclosed a specific apparatus for practicing the method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.