Urea reduction of NO.sub.x in combustion effluents
US4208386A · kind A · utility
113Cited by
6References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 3, 1976 |
| Grant date | Jun 17, 1980 |
| Priority date | — |
| Expiry date | Mar 3, 1996 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01N2610/04
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Method for reducing NO.sub.x in combustion effluents comprising introducing urea at elevated temperatures in the presence of oxygen, either as a solid or solution in amounts sufficient to reduce the NO.sub.x concentration. Conveniently, the urea may be introduced as a solid powder or as a solution in a hydroxylic solvent, at temperatures in excess of 1300.degree. F. and in the presence of at least 0.1 volume percent oxygen. This invention was made under contract with or supported by the Electric Power Research Institute.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.