Water-tube boiler with re-circulation means

Details Water-tube boiler with re-circulation means Water-tube boiler with re-circulation means

1997-12-31

2000-02-29

Hoang, Tu Ba

Liquid heaters and vaporizers

Heat transmitter

122 17, F22B 2304

Patent

active

060296143

ABSTRACT:
The water-tube boiler fulfills the reduction in NO.sub.x with a simple constitution, and achieves reduction in NO.sub.x and reduction in CO at the same time with a simple constitution. In the water-tube boiler, a plurality of water tubes (5) are arranged in a zone where burning-reaction ongoing gas derived from a burner (10) is present within a combustion chamber (9), and exhaust gas recirculation equipment (26) is provided to feed part of exhaust gas exhausted from the combustion chamber 9 to the burner 10.

REFERENCES:
patent: 2993479 (1961-07-01), Thurley
patent: 4022163 (1977-05-01), Baumgartner et al.
patent: 4453496 (1984-06-01), Yoshinari
patent: 4825813 (1989-05-01), Yoshinari et al.
patent: 5020479 (1991-06-01), Suesada et al.
patent: 5199384 (1993-04-01), Kayahara et al.
patent: 5273001 (1993-12-01), Kayahara et al.
patent: 5353748 (1994-10-01), Kayahara et al.
patent: 5433174 (1995-07-01), Brady et al.

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