Methods and apparatus for burning fuel with low NO.sub.x formati

Details Methods and apparatus for burning fuel with low NO.sub.x formati Methods and apparatus for burning fuel with low NO.sub.x formati

1992-02-13

1992-10-13

Jones, Larry

Combustion

Process of combustion or burner operation

Flame shaping, or distributing components in combustion zone

431116, 431181, 431187, F23M 300, F23C 700

Patent

active

051545969

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.

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