Power plants – Combustion products used as motive fluid – Combustion products generator
Patent
1992-09-21
1994-06-14
Bertsch, Richard A.
Power plants
Combustion products used as motive fluid
Combustion products generator
60749, F23R 320
Patent
active
053199367
ABSTRACT:
First and second premixed burners having annular injection slots are concentrically adjacent and the injection slots are substantially aligned with each other in a longitudinal direction of the burners. A pilot burner is provided substantially in the center of the annular first premixed burner so that the injection slot of the pilot burner is substantially aligned with the injection slot of the first premixed burner in a longitudinal direction of the burner. A flame holder which forms a circulating flow of combusted gas Gh downstream of the flame holder is disposed at the downstream end of a boundary wall between the premixed burners so that the flame holder is co-used by the premixed burners. Flow rate adjusting means for adjusting the flow rate of fuel supplied to the first, second premixed burner and the pilot burner, respectively are provided. The fuel can be substantially uniformly mixed with a combustion gas. Reduction in NOx and stabilization of premixed flame can be achieved.
REFERENCES:
patent: 3644076 (1972-02-01), Bagge
patent: 3811277 (1974-05-01), Markowski
patent: 4193260 (1980-03-01), Carlisle et al.
patent: 4408461 (1983-10-01), Bruhwiler et al.
patent: 5178533 (1993-01-01), Collenbusch
Hayashi Noriyuki
Iizuka Nobuyuki
Ikeda Hiraku
Komatsu Yasutaka
Kuroda Michio
Bertsch Richard A.
Hitachi , Ltd.
Thorpe Timothy S.
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