Title:
微粉炭焚きボイラ
Document Type and Number:
Japanese Patent JP4855518
Kind Code:
B2
Abstract:
Provided is a finely-powdered coal burning boiler, which reduces an air-excess ratio thereby to reduce the emission of unburned contents such as CO. The finely-powdered coal burning boiler comprises finely-powdered coal feed measuring means (51) for measuring the feeding rates of the finely-powdered coal to be conveyed through coal feeding pipes (43), individually, and control means (66) for calculating the burning air feeding rates to match the finely-powdered coal feeding rates thereby to send a control command signal to burning air feed adjusting means (64), so that a burner air ratio set by burner air ratio setting means may be kept on the basis of both the finely-powered coal feeding rate, which is measured by the finely-powdered coal feed measuring means (51), and the burning air feeding rate, which is measured by the burning air feeding rate measuring means and fed to a finely-powdered coal burner (61) connected to the coal feeding pipes (43).
Inventors:
Noriyuki Otanizu
Hidehisa Yoshimaki
Katsumi Shimodaira
Hitoshi Okimura
Miyake Soroshi
Hidehisa Yoshimaki
Katsumi Shimodaira
Hitoshi Okimura
Miyake Soroshi
Application Number:
JP2009511783A
Publication Date:
January 18, 2012
Filing Date:
April 11, 2008
Export Citation:
Assignee:
Babcock Hitachi Ltd.
International Classes:
F23C99/00; F23K3/02; G01F1/00; G01F1/66; G01F1/74
Domestic Patent References:
| JPH08270931A | 1996-10-18 | |||
| JPH04222315A | 1992-08-12 | |||
| JP2007107849A | 2007-04-26 | |||
| JPH06101806A | 1994-04-12 | |||
| JPS6127408A | 1986-02-06 | |||
| JPH0921505A | 1997-01-21 | |||
| JPS63156904A | 1988-06-30 | |||
| JPH06317304A | 1994-11-15 |
Attorney, Agent or Firm:
Patent Business Corporation Takewa International Patent Office