Methods and apparatus for burning fuel with low NO.sub.x formation
US5154596A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 13, 1992 |
| Grant date | Oct 13, 1992 |
| Priority date | — |
| Expiry date | Feb 13, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23C2202/30
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
Improved methods and burner apparatus are provided for discharging mixtures f fuel and air into furnace spaces wherein said mixtures are burned and flue gases having low NO.sub.x content are formed therefrom. The methods basically comprise discharging a first fuel mixture containing a portion of the fuel and flue gases from the furnace space into the furnace space whereby the mixture is burned in a primary reaction zone therein and flue gases having low NO.sub.x content are formed therefrom, and then discharging the remaining portion of the fuel into a secondary reaction zone wherein the remaining portion of fuel mixes with air and flue gases to form a second fuel mixture which is burned in the secondary reaction zone and additional flue gases having low NO.sub.x contents are formed therefrom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.