Multi-stage combustion method for inhibiting formation of nitrog

Details Multi-stage combustion method for inhibiting formation of nitrog Multi-stage combustion method for inhibiting formation of nitrog

1980-12-31

1983-07-26

O'Connor, Daniel J.

Combustion

Process of combustion or burner operation

Flame shaping, or distributing components in combustion zone

60746, 431175, 431284, F23M 304

Patent

active

043952232

ABSTRACT:
A method comprising injecting a primary fuel and air into a furnace to burn the fuel and form a first-stage combustion zone, the fuel being diluted with surrounding combustion gas and the air being supplied at a rate in excess of the stoichiometric rate required for the combustion of the fuel, and injecting a secondary fuel into the furnace around or downstream of the first-stage zone at a range approximately equal to the stoichiometric rate required for the consumption of the excess oxygen resulting from the combustion in the first-stage zone the fuel being diluted with surrounding combustion gas and to form a second-stage combustion zone around or downstream of the first-stage zone.

REFERENCES:
patent: 3273621 (1966-09-01), Childree
patent: 3376098 (1968-04-01), Pryor
patent: 3729285 (1973-04-01), Schwedersky
patent: 3736747 (1973-06-01), Warren
patent: 3993449 (1976-11-01), Childs
patent: 4012902 (1977-03-01), Schirmer
patent: 4021186 (1977-05-01), Tenner
patent: 4050877 (1977-09-01), Craig
patent: 4095929 (1978-06-01), McCartney
patent: 4113417 (1978-09-01), Deruelle
patent: 4118171 (1978-10-01), Flanagan

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