Combustion process for reducing nitrogen oxides
US4403941A · kind A · utility
100Cited by
8References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 5, 1980 |
| Grant date | Sep 13, 1983 |
| Priority date | — |
| Expiry date | Aug 5, 2000 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23C2201/101
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A combustion process for reducing nitrogen oxides in combustors is proposed wherein combustion takes place successively forming an incomplete combustion zone, a reducing combustion zone, and a complete combustion zone, respectively corresponding to primary burners, secondary burners and air ports or after-burners, successively arranged in the direction of gas stream in a furnace. According to the present invention, it is possible to reduce nitrogen oxides by improving a manner of combustion without providing any denitrating apparatuses for exhaust gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.