BURNER

Japanese Patent JP3951189

B2

PROBLEM TO BE SOLVED: To provide a burner which does not cause unstable combustion even in a case that O2 concentration of combustion air is low.
SOLUTION: In the burner, a secondary air flow passage is formed surrounding a primary air flow passage 3 and a plurality of injection nozzles 9 of gas fuel are provided in the secondary air flow passage 4 around the primary air flow passage 3. Projecting between an outer periphery of a tip end part of the primary air flow passage 3 and the injection nozzle 9, a flame holder 14 in a ring shape is provided on the outer periphery of the tip end part. A main injection port 12 and a side injection port 11 are formed at the tip end part of the injection nozzle 9, the side injection port 11 is positioned on a rear flow side of the flame holder 14 and formed to point an axial center of the flame holder 14. A liquid fuel burner 20 is provided in the primary air passage 3, the flame holder 22 is provided at a tip end of the liquid fuel burner 20 and a position adjusting means is provided to move the liquid fuel burner 20 in an axial direction of the primary air flow passage 3. The injection nozzle 9 of gas fuel and the liquid fuel burner 20 are formed so that they can be switched to burn.

WO/2009/130857

PULVERIZED COAL BURNER

Kiyama Kenji
Morita Shigeki
Middle and lower adults
Shunichi Tsumura
Kobayashi Hironobu
Akira Baba

JP2004137573A

August 01, 2007

May 06, 2004

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Babcock Hitachi Ltd.

F23D17/00; F23C1/08; (IPC1-7): F23D17/00

JP1121610A
JP61181924U
JP2050011A
JP64031366U

Hirotsugu Yoshioka

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