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Title:
BURNER, AND COMBUSTOR EQUIPPED THEREWITH
Document Type and Number:
Japanese Patent JP2001012703
Kind Code:
A
Abstract:

To provide a burner and a combustor equipped with the burner capable of preventing ash from being deposited on a fire furnace wall located in the vicinity of the burner without use of an expensive apparatus and without causing combustion to become unstable, and further preventing the fire furnace wall from being corroded by suppressing production of CO onto the fire furnace wall located in the vicinity of the burner.

A burner includes a primary flow passage 1 for inserting a mixed fluid of a fine powdered coal fuel or a liquid fuel into a fire furnace, air flow passages 2 to 4 provided on an outer periphery of the primary flow passage 1 for supplying single or a plurality of combustion airs, an outermost periphery air flow passage 5 for flowing provided on the outer periphery of the air flow passage 4 for flowing air toward a wall surface constructing the fire furnace. Part of the combustion air from the outermost flow passage 5 is flowed along a fire furnace wall 10, whereby ash is prevented from being deposited onto the fire furnace wall located in the vicinity with CO being suppressed, and hence corrosion is prevented.


Inventors:
Mine, Satohiko
Shimogoori, Miki
Baba, Akira
Oyatsu, Noriyuki
Takarayama, Noboru
Application Number:
JP1999000185550
Publication Date:
January 19, 2001
Filing Date:
June 30, 1999
Export Citation:
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Assignee:
BABCOCK HITACHI KK
International Classes:
F23L13/02; F23C1/10; F23C7/02; F23C99/00; F23D17/00; (IPC1-7): F23C1/10; F23C7/02; F23C11/00; F23D17/00; F23L13/02
Attorney, Agent or Firm:
松永 孝義