Title:
BED TEMPERATURE CONTROLLING METHOD AND DEVICE AT THE TIME OF WARMING BED MATERIAL STORAGE TANK OF PRESSURIZED FLUIDIZED BED BOILER
Document Type and Number:
Japanese Patent JP3826498
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a bed temperature controlling method and device at the time of warming a bed material storage tank of a pressurized fluidized bed boiler which can prevent lowering of the bed temperature in the body of the pressurized fluidized bed boiler at the time of warming a bed material in the bed material storage tank.
SOLUTION: At the time of warming a bed material B in a bed material storage tank 4, in response to the temperature difference 65a between the bed temperature 63a in a body 3 of a fluidized bed boiler and the bed material temperature 64a at the lower portion of the bed material storage tank 4, a close time t" outputted from a function generator 66 is inputted to an ON delay timer 54 of a pulse generator 41 so as to change the injection speed of the bed material B into the body 3 of the fluidized bed boiler from the bed material storage tank 4, while in response to the above-mentioned temperature difference 65a, a fuel bias 70 outputted from the function generator 69 is outputted to an adder 75 so as to change the supply amount of fuel 9 thus controlling the bed temperature 63a at a given value while preventing lowering of the temperature.
Inventors:
Masashi Ichihara
Application Number:
JP17025397A
Publication Date:
September 27, 2006
Filing Date:
June 26, 1997
Export Citation:
Assignee:
Ishikawajima Harima Heavy Industries Co., Ltd.
International Classes:
F23C10/18; F23C10/28; F23C10/16; (IPC1-7): F23C11/02; F23C11/02; F23C11/02
Domestic Patent References:
| JP5180414A | ||||
| JP5018501A | ||||
| JP6014711U | ||||
| JP7286704A |
Attorney, Agent or Firm:
Tsunemitsu Yamada
Seiichi Otsuka
Seiichi Otsuka
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