Burner for burning powdered fuel

Details Burner for burning powdered fuel Burner for burning powdered fuel

1995-01-06

1997-07-29

Nelli, Raymond A.

Furnaces

Including fluid fuel burner

Powdered solid fuel

110263, 110265, F23C 110

Patent

active

056513208

ABSTRACT:
A burner for burning powdered fuel in air. The air is divided into concentric annular currents. A tube (6) conveys primary air or gas. The tube is surrounded by another tube (12). The second tube conveys secondary air. The exit of the primary-air tube inside the secondary-air tube is surrounded by an annular baffle (26). The baffle is open at each end, has secondary air flowing through it, and extends axially beyond the primary-air tube as much as 25% of the tube's outside diameter. The thickness of the gap (25) between the primary-air tube and the baffle is at least 1.5% of that diameter.

REFERENCES:
patent: 4555994 (1985-12-01), Voigt et al.
patent: 4807541 (1989-02-01), Masai et al.
patent: 4836772 (1989-06-01), La Rue
patent: 4838185 (1989-06-01), Flament
patent: 4907962 (1990-03-01), Azuhata et al.
patent: 5113771 (1992-05-01), Rini et al.
patent: 5231937 (1993-08-01), Kobayashi et al.

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