Fuel staging methods for low NOx tangential fired boiler operation
US6790031B2 · kind B2 · utility
3Cited by
19References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 16, 2003 |
| Grant date | Sep 14, 2004 |
| Priority date | — |
| Expiry date | Jan 16, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E20/34
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A tangential fired boiler has a circumferential wall defining a combustion zone and a plurality of fuel inlets disposed along the circumferential wall. The plurality of fuel inlets inject fuel at non-uniform rates in order to produce localized fuel rich, oxygen poor zones and fuel lean, oxygen rich zones within the combustion zone, and to cause ambient boiler gases to be entrained into and mix with the oxygen poor zone to achieve fuel staging of the boiler.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.