Power plants – Combustion products used as motive fluid – Combustion products generator
Patent
1988-01-11
1990-02-06
Casaregola, Louis J.
Power plants
Combustion products used as motive fluid
Combustion products generator
60737, 60748, F23R 334
Patent
active
048980013
ABSTRACT:
A gas turbine combustor for reducing a production of NOx. The combustor includes a head combustion chamber and a rear combustion chamber which is larger in diameter than the head combustion chamber. The head combustion chamber is provided with an axially extending hollow frustoconical tubular member to form an annular combustion space therein, air holes for axially jetting air into the annular combustion chamber, air holes formed on a peripheral wall for injecting air and a plurality of fuel nozzles projected into the annular combustion space for injecting fuel into vortex formed by the air jet and the injected air flow whereby the flame is stabilized and lean combustion can be effected. The rear combustion chamber has a fuel and air supply means on the upstream side which includes air inlets formed by whirling vanes and fuel nozzles disposed in the air inlets so that fuel and air are mixed well. The fuel and air mixture is jetted substantially axially while whirling it so that formation of hot spots is avoided and the NOx formation is extremely limited.
REFERENCES:
patent: 2583416 (1952-01-01), Clarke et al.
patent: 2676460 (1954-04-01), Brown
patent: 2999359 (1961-09-01), Murray
patent: 4151713 (1979-05-01), Faitani et al.
patent: 4292801 (1981-10-01), Wilkes et al.
patent: 4344280 (1982-08-01), Minakawa et al.
patent: 4598553 (1986-07-01), Saito et al.
Akatsu Shigeyuki
Iizuka Nobuyuki
Ishibashi Yoji
Kato Fumio
Kuroda Michio
Casaregola Louis J.
Hitachi , Ltd.
Thorpe Timothy S.
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