Water-tube boiler and burner

Details Water-tube boiler and burner Water-tube boiler and burner

1997-12-24

2000-03-28

Jeffery, John A.

Liquid heaters and vaporizers

Heat transmitter

Corrugated and finned heat transmitters

122337, 122343, 110262, 431284, F22B 2304, F23C 108

Patent

active

060417439

ABSTRACT:
The invention provides a water-tube boiler and a burner capable of realizing a reduction in NO.sub.x and CO in both the combustion of liquid fuel and the combustion of gaseous fuel. The water-tube boiler comprises a burner which uses liquid fuel or gaseous fuel switchably, characterized in that a plurality of water tubes are arranged into an annular shape in a zone where burning-reaction ongoing gas derived from the burner is present within a combustion chamber. The water-tube boiler comprises a burner which uses either liquid fuel or gaseous fuel. A first water tube array is formed by arranging a plurality of water tubes into an annular shape in a zone where burning-reaction ongoing gas derived from the burner is present within a combustion chamber. Gaps are provided between adjacent water tubes of the first ongoing gas to flow therethrough. A zone is provided around the first water tube array to allow burning reaction to be continuously effected.

REFERENCES:
patent: 4412808 (1983-11-01), Sheppard
patent: 4441879 (1984-04-01), Wagner 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: 5511970 (1996-04-01), Irwin et al.

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