Pollutant reducing modification of a tangentially fired furnace

Details Pollutant reducing modification of a tangentially fired furnace Pollutant reducing modification of a tangentially fired furnace

1995-04-10

1997-01-14

Dority, Carroll B.

Combustion

Process of combustion or burner operation

Flame shaping, or distributing components in combustion zone

431178, 110763, 110764, 110265, F23M 300

Patent

active

055932983

ABSTRACT:
For reducing pollutant generation in a tangentially fired furnace, a method and apparatus for modification of a main air-fuel compartment. An extender dish for mounting on the discharge face of the compartment has a wide projection to extend across the discharge face half portion closer to the axis of the fireball in the furnace firing chamber and a narrow projection to extend across the discharge face half portion further from the fireball axis. Preferably a flow restricting plate is also provided to extend across a part of the discharge face portion closer to the axis of the fireball. These air restricting means cause a portion of the combustion air from the main air-fuel compartment discharge face to be directed outside the fireball therein reducing oxygen concentration and flame temperature thereby lowering pollutant generation. Working in concert with auxiliary air compartments, this method and apparatus are most efficient in pollutant reduction at low furnace loads where most pollution reduction is required.

REFERENCES:
patent: 2608168 (1952-08-01), Jackson
patent: 3256842 (1966-06-01), Vigneron et al.
patent: 4304196 (1981-12-01), Chadshay et al.
patent: 4570551 (1986-02-01), Derbidge et al.

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