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1. (WO1989000661) COMBUSTION CONTROL APPARATUS FOR FLUIDIZED BED BOILERS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1989/000661 International Application No.: PCT/JP1988/000693
Publication Date: 26.01.1989 International Filing Date: 13.07.1988
Chapter 2 Demand Filed: 11.08.1988
IPC:
F22B 31/00 (2006.01) ,F23G 5/30 (2006.01) ,F23G 5/46 (2006.01) ,F23G 5/50 (2006.01) ,F23N 1/02 (2006.01)
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
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
23
COMBUSTION APPARATUS; COMBUSTION PROCESSES
N
REGULATING OR CONTROLLING COMBUSTION
1
Regulating fuel supply
02
conjointly with air supply
Applicants:
EBARA CORPORATION [JP/JP]; 11-1, Hanedaasahicho Ota-ku Tokyo 144, JP (AllExceptUS)
KOSUGI, Shigeru [JP/JP]; JP (UsOnly)
OHSHITA, Takahiro [JP/JP]; JP (UsOnly)
HIGO, Tsutomu [JP/JP]; JP (UsOnly)
INUMARU, Naoki [JP/JP]; JP (UsOnly)
KAWAGUCHI, Hajime [JP/JP]; JP (UsOnly)
Inventors:
KOSUGI, Shigeru; JP
OHSHITA, Takahiro; JP
HIGO, Tsutomu; JP
INUMARU, Naoki; JP
KAWAGUCHI, Hajime; JP
Agent:
YUASA, Kyozo @; Yuasa and Hara, Section 206 Shin Ohtemachi Bldg. 2-1, Ohtemachi 2-chome Chiyoda-ku Tokyo 100, JP
Priority Data:
62/17446713.07.1987JP
Title (EN) COMBUSTION CONTROL APPARATUS FOR FLUIDIZED BED BOILERS
(FR) DISPOSITIF REGULATEUR DE COMBUSTION POUR CHAUDIERES A LIT FLUIDISE
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.
(FR) Circuit régulateur (B) destiné à faire varier la pression de vapeur dans un tambour de chaudière (17) recevant la chaleur d'une chambre de combustion (3) dans une chaudière à lit fluidisé (A, C), en fonction de la quantité de chaleur récupérée dans le tambour de chaudière (17), et à améliorer le temps de réaction lors de la suppression ou de la régulation de l'augmentation ou de la diminution de la pression de vapeur, provoquées par les variations d'une charge de vapeur. La pression de vapeur dans le tambour de chaudière (17) est détectée à l'aide d'une jauge de pression (20b) et le débit d'air de récupération de chaleur est régulé en fonction de la pression de vapeur, tandis qu'une unité d'alimentation en matière combustible (12, 13, 14) alimentant la chaudière (A, C) en combustible est commandée en conséquence.
Designated States: AU, BR, DK, FI, KR, NO, SU, US
European Patent Office (AT, BE, CH, DE, FR, GB, IT, LU, NL, SE)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)
Also published as:
NO19891057EP0372075US5052344AU1988020770