Solid fuel burner, burning method using the same, combustion...

Details Solid fuel burner, burning method using the same, combustion... Solid fuel burner, burning method using the same, combustion...

2006-12-05

2010-02-23

Rinehart, Kenneth B (Department: 3743)

Furnaces

Utilizing powdered fuel

C110S265000, C110S347000

Reexamination Certificate

active

07665408

ABSTRACT:
A solid fuel burner using a low oxygen concentration gas as a transporting gas of a low grade solid fuel such as brown coal or the like and a combustion method using the solid fuel burner are provided. The solid fuel burner comprises a means for accelerating ignition of the fuel and a means for preventing slugging caused by combustion ash from occurring. Mixing of fuel and air inside a fuel nozzle11is accelerated by that an additional air nozzle12and a separator35for separating a flow passage are arranged in the fuel nozzle11, and the exit of the additional air nozzle12is set at a position so as to overlap with the separator35when seeing from a direction perpendicular to a burner axis, and additional air is ejected in a direction nearly perpendicular to a flow direction of a fuel jet flowing through the fuel nozzle11. An amount of air from the additional air nozzle12is varied corresponding to a combustion load. By increasing the amount of air from the additional air nozzle12at a low load operation, an oxygen concentration of a circulation flow19formed in a downstream portion outside the exit of the fuel nozzle11is increased to stably burn the fuel. By decreasing the amount of air from the additional air nozzle12at a high load operation, a flame is formed at a position distant from the fuel nozzle11to suppress radiant heat received by structures of the solid fuel burner and walls of the furnace.

REFERENCES:
patent: 2242787 (1941-05-01), Lieberherr
patent: 5113771 (1992-05-01), Rini et al.
patent: 5199355 (1993-04-01), Larue
patent: 5321937 (1994-06-01), Hamilton
patent: 5842426 (1998-12-01), Ohta et al.
patent: 5934899 (1999-08-01), Joshi et al.
patent: 5937770 (1999-08-01), Kobayashi et al.
patent: 6189464 (2001-02-01), Okazaki et al.
patent: 6237510 (2001-05-01), Tsumura et al.
patent: 0 672 863 (1995-09-01), None
patent: 0 809 068 (1997-11-01), None
patent: 5-9084008 (1984-05-01), None
patent: 10-037208 (1996-08-01), None
patent: EP 0809068 (1997-11-01), None
patent: 11-148610 (1999-06-01), None
patent: 2000-038108 (2000-02-01), None

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