Power plants – Combustion products used as motive fluid
Patent
1979-07-11
1981-10-06
Garrett, Robert E.
Power plants
Combustion products used as motive fluid
60733, 60747, F23R 334
Patent
active
042928010
ABSTRACT:
An improved dual stage-dual mode combustor capable of reduced emissions of nitrogen oxide from a combustion turbine is disclosed. The combustor includes two combustion chambers separated by a throat region. Fuel is initially introduced and ignited in the first chamber. Thereafter, fuel is introduced near the downstream end of the first chamber for ignition and burning in the second chamber. Burning in the first chamber is extinguished by shifting the fuel flow to burning in the second chamber and after termination of the flame in the first chamber, fuel is reintroduced into the first chamber for premixing only with burning in the second chamber. By selectively controlling the percentage of fuel introduced into the first stage, low emissions of nitrogen oxide are realized.
REFERENCES:
patent: 2999359 (1961-09-01), Murray
patent: 3048014 (1962-08-01), Schmidt
patent: 3946553 (1976-03-01), Roberts et al.
patent: 3958413 (1976-05-01), Cornelius et al.
patent: 3958416 (1976-05-01), Hammond et al.
patent: 3973395 (1976-08-01), Markowski et al.
patent: 4173118 (1979-11-01), Kawaguchi et al.
patent: 4193260 (1980-03-01), Carlisle et al.
Carlstrom et al., "Improved Emissions Performance in Today's Combustion Systems", Intl. Gas Turb. Seminar, Jun. 1978, pp. 17, 18.
Hilt Milton B.
Wilkes Colin
Garrett Robert E.
General Electric Company
Squillaro Jerome C.
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