Waste gas burner

Details Waste gas burner Waste gas burner

1992-07-28

1993-07-06

Dority, Carroll B.

Combustion

Combustion products return structure

Recirculation about mixing or combustion chamber wall or baffle

431202, F23D 2100

Patent

active

052248526

ABSTRACT:
A waste gas burner (10) comprises burner means (12) into which waste gas is fed through injectors (15), each leading to an open end of a conduit (17) to cause natural aspiration of primary air (20). The primary combustion takes place in a reaction zone (19) surrounded by a peripheral wall (16) which is pierced by ducts (23) so as to introduce recirculated combustion products under natural draught. Secondary air intakes (25) surround the peripheral wall (16) of the reaction zone (19) and promotes secondary burning of the recirculated gases. The reaction zone has a high temperature short duration combustion without excess air and the secondary combustion takes place at a lower temperature with a longer retention time and in the presence of excess air so as to reduce nitrogen oxide formation and ensure combustion of impurities in the waste gas.

REFERENCES:
patent: 2857961 (1958-10-01), Brown et al.
patent: 3933420 (1976-01-01), Zink et al.
patent: 3985494 (1976-10-01), Childree

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