Gas turbine combustor and a method of combustion thereby

Details Gas turbine combustor and a method of combustion thereby Gas turbine combustor and a method of combustion thereby

1988-12-30

1991-08-13

Casaregola, Louis J.

Power plants

Combustion products used as motive fluid

60737, F02C 726

Patent

active

050385585

ABSTRACT:
A gas turbine combustor comprises a combustion chamber, a premixing chamber in which hydrocarbon fuel and air are premixed, a nozzle with swirler for swirling and injecting the premixed fuel and air into the combustion chamber, to effect premixed combustion, and a fuel nozzle projecting into the combustion chamber and adapted to inject fuel at region wherein the premixed combustion is completed, so as to effect low air-ratio diffusion combustion thereby to produce reducing substance. NOx produced by the premixed combustion is reduced by reducing reaction with the reducing substances, so that the NOx concentration in the combustion gas is reduced. The combustor further includes an after-air ports on a peripheral wall defining the combustion chamber to effect combustion of unburnt substances.

REFERENCES:
patent: 2999359 (1961-09-01), Murray
patent: 3792581 (1974-02-01), Handa
patent: 4173118 (1979-11-01), Kawaguchi
patent: 4260637 (1981-04-01), Markowski et al.
patent: 4265615 (1981-04-01), Lohmann et al.
patent: 4389848 (1983-06-01), Markowski et al.
patent: 4474014 (1984-10-01), Markowski

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