Incineration control apparatus for a fluidized bed boiler

F - Mech Eng,Light,Heat,Weapons – 23 – N

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122/27

F23N 5/00 (2006.01) F23C 10/00 (2006.01)

Patent

CA 2003828

A control circuit (B) is adapted the steam pressure at a boiler drum (17) which receives heat from a incineration chamber (3) in a fluidized bed type boiler (A, C) to be correlated to the thermal energy to be recovered and transferred to the boiler drum and to improve a responsiveness for the suppressed control of increase or decrease of the steam pressure caused by variation of a steam load. The velocity of heat recovery is controlled in accordance with the steam pressure in the boiler drum (17) which is detected by a pressure gauge (20b) and a combustibles supply unit (12, 13, 14) for supplying combustibles to the boilers (A, C) is also controlled accordingly.

Circuit de commande (B) adapté pour que la pression de vapeur d'un corps de chaudière (17), qui reçoit la chaleur d'une chambre d'incinération (3) dans une chaudière à lit fluidisé (A, C), soit en corrélation avec l'énergie thermique à récupérer et à transférer au corps de chaudière. Le circuit de commande permet d'améliorer une sensibilité de réaction indépendamment de l'augmentation ou de la diminution de la pression de vapeur provoquée par une variation de la courbe de débit de la vapeur. La vitesse de la récupération de chaleur est contrôlée selon la pression de vapeur dans le corps de chaudière (17) qui est détectée par un manomètre de pression (20b). Une unité d'alimentation de combustible (12, 13, 14) servant à alimenter les chaudières (A, C) est également contrôlée.

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