Multi-stage combustion chamber for combustion of nitrogen-containing gas with reduced NO.sub.x emissions, and method for its operation
US5002483A · kind A · utility
21Cited by
2References
8Claims
0Family size
Inventor
Key dates
| Filing date | Dec 19, 1986 |
| Grant date | Mar 26, 1991 |
| Priority date | — |
| Expiry date | Dec 19, 2006 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23M5/085
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
Two-stage combustion of nitrogen-containing gas with low NO.sub.x emissions, in a combustion chamber, wherein first, pre-combustion is performed in a primary stage at an air number of approximately .lambda.=0.6 to 0.9 and subsequently post-combustion is performed in a secondary stage at an air number of approximately .lambda.=1.3 to 2, characterized in that in the primary stage, an inert substance is supplied via a multiplicity of openings in the walls of the primary stage, which substance cools the walls and keeps the combustion zone remote from the walls.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.