Title:
METHOD FOR CONTROLLING STATE OF COMBUSTION IN FURNACE ZONE OF BOILER HAVING PLURAL FURNACE ZONES
Document Type and Number:
Japanese Patent JP3652849
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for controlling a state of combustion in a furnace zone of a boiler wherein an unbalance of the state of combustion between furnace zones in a plurality is reduced by a burner angle regulator so that stable steam can be ensured.
SOLUTION: A boiler having a plurality of furnace zones is constituted in such a manner that the furnace zones forming a plurality of independent states of combustion are provided in a furnace and that gas distributing dampers 3a and 3b are provided in rear passes positioned on the respective rear flow sides of the furnace zones, while heating means for main steam or/and heating means for reheated steam are provided above the furnace zones or in the rear passes. In this case, an unbalance of a state of combustion of the two furnace areas is detected on the basis of a signal of at least one deviation out of a temperature deviation of the two furnace zones from each other as to the temperature of the main steam or/and the temperature of the reheated steam heated by the heating means provided in the furnace zones or the rear passes and a deviation in an opening of the gas distributing dampers 3a and 3b from each other. By changing a combustion zone by regulating the angle of a burner disposed in each of the furnace zones, on the basis of a detection signal, the unbalance of combustion between the two furnace zones is reduced.
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| JPS58106322 | COMBUSTION CONTROLLER |
Inventors:
Mutsumi Taguchi
Application Number:
JP27967397A
Publication Date:
May 25, 2005
Filing Date:
September 26, 1997
Export Citation:
Assignee:
MITSUBISHI HEAVY INDUSTRIES,LTD.
International Classes:
F23N5/00; F22B35/00; (IPC1-7): F22B35/00; F23N5/00
Domestic Patent References:
| JP6101806A | ||||
| JP5833003A | ||||
| JP8327007A |
Attorney, Agent or Firm:
Masahisa Takahashi
Jiro Nagaya
Jiro Nagaya