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1. (AU1988020770) Combustion control apparatus for fluidized bed boilers

Office : Australia
Application Number: 20770/88 Application Date: 13.07.1988
Publication Number: 1988020770 Publication Date: 05.09.1991
Publication Kind : A
Prior PCT appl.: Application Number:JP1988000693 ; Publication Number: Click to see the data
IPC:
F23C 10/28
F22B 1/02
F23C 10/02
F23G 5/50
F22B 31/00
F23G 5/30
F23G 5/46
F23N 1/02
F23N 3/00
F23N 5/00
F23N 5/02
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23
COMBUSTION APPARATUS; COMBUSTION PROCESSES
C
METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN AIR
10
Apparatus in which combustion takes place in a fluidised bed of fuel or other particles
18
Details; Accessories
28
Control devices specially adapted for fluidised bed combustion apparatus
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
22
STEAM GENERATION
B
METHODS OF STEAM GENERATION; STEAM BOILERS
1
Methods of steam generation characterised by form of heating method
02
by exploitation of the heat content of hot heat carriers
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23
COMBUSTION APPARATUS; COMBUSTION PROCESSES
C
METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN AIR
10
Apparatus in which combustion takes place in a fluidised bed of fuel or other particles
02
with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23
COMBUSTION APPARATUS; COMBUSTION PROCESSES
G
CREMATION FURNACES; CONSUMING WASTE OR LOW GRADE FUELS BY COMBUSTION
5
Methods or apparatus, e.g. incinerators, specially adapted for combustion of waste or low-grade fuels
50
Control or safety arrangements
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
22
STEAM GENERATION
B
METHODS OF STEAM GENERATION; STEAM BOILERS
31
Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements or dispositions of combustion apparatus
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23
COMBUSTION APPARATUS; COMBUSTION PROCESSES
G
CREMATION FURNACES; CONSUMING WASTE OR LOW GRADE FUELS BY COMBUSTION
5
Methods or apparatus, e.g. incinerators, specially adapted for combustion of waste or low-grade fuels
30
with combustion in a fluidised bed
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23
COMBUSTION APPARATUS; COMBUSTION PROCESSES
G
CREMATION FURNACES; CONSUMING WASTE OR LOW GRADE FUELS BY COMBUSTION
5
Methods or apparatus, e.g. incinerators, specially adapted for combustion of waste or low-grade fuels
44
Details; Accessories
46
Recuperation of heat
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23
COMBUSTION APPARATUS; COMBUSTION PROCESSES
N
REGULATING OR CONTROLLING COMBUSTION
1
Regulating fuel supply
02
conjointly with air supply
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23
COMBUSTION APPARATUS; COMBUSTION PROCESSES
N
REGULATING OR CONTROLLING COMBUSTION
3
Regulating air supply or draught
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23
COMBUSTION APPARATUS; COMBUSTION PROCESSES
N
REGULATING OR CONTROLLING COMBUSTION
5
Systems for controlling combustion
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23
COMBUSTION APPARATUS; COMBUSTION PROCESSES
N
REGULATING OR CONTROLLING COMBUSTION
5
Systems for controlling combustion
02
using devices responsive to thermal changes or to thermal expansion of a medium
Applicants: Ebara Corporation
Inventors:
Agents: PHILLIPS ORMONDE FITZPATRICK
Priority Data: 62-174467 13.07.1987 JP
Title: (EN) Combustion control apparatus for fluidized bed boilers
Abstract:
(EN) A control circuit (B) adapted to vary the vapor pressure in a boiler drum (17), which receives heat from a combustion chamber (3) in a fluidized bed boiler (A, C), in accordance with the quantity of heat recovered at the boiler drum (17), and improve a responsiveness for suppressing or controlling an increase or a decrease of the vapor pressure, which is caused by the variations of a vapor load. The vapor pressure in the boiler drum (17) is detected with a pressure gauge (20b), and the heat recovering air flow rate is controlled according to the vapor pressure, while a combustible material supply unit (12, 13, 14) for feeding combustible to the boiler (A, C) is also controlled accordingly.
Also published as:
NO19891057EP0372075US5052344WO/1989/000661