Burner for the combustion of fuel

Details Burner for the combustion of fuel Burner for the combustion of fuel

1995-02-10

1997-07-22

Bennett, Henry A.

Furnaces

Including fluid fuel burner

Powdered solid fuel

110104B, 110264, 110265, 110347, 431184, F23D 100

Patent

active

056494947

ABSTRACT:
A burner (10) for the combustion of fuel comprises a passage (32) through which in operation a mixed flow of fuel and air passes for primary combustion at it's outlet. Two further annular passages (34, 36), concentric with and radially outward of the passage (32), are provided through which supplementary flows of air pass to support the primary combustion. The outlets of the two annular passages (34, 36) diverge to discharge the supplementary flows of air at an angle to the mixed flow of fuel and air. Members (62) are provided in the annular passage which obstruct the discharge of the supplementary flow of air. Furnace gases circulate in the region downstream of the obstruction members (62). Circulation of the furnace gases delays the mixing of the fuel and air mixture with the supplementary air flows to reduce the nitrogen oxides produced.

REFERENCES:
patent: 4357134 (1982-11-01), Katsuhige et al.
patent: 4443182 (1984-04-01), Wojcieson et al.
patent: 4602571 (1986-07-01), Chadshay
patent: 4930430 (1990-06-01), Allen et al.
patent: 5199355 (1993-04-01), Larue
patent: 5231937 (1993-08-01), Kobayashi et al.
patent: 5415114 (1995-05-01), Monro et al.

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