BACKUP METHOD OF DUST COLLECTOR IN REFUSE INCINERATION PLANT AND BACKUP APPARATUS OF DUST COLLECTOR USED THEREIN

摘要

PROBLEM TO BE SOLVED: To minimize emission of a harmful substance and enable energy saving operation by closing the inlet and outlet dampers of a dust collector before the operation of an incinerator and circulating and supplying hot air to the dust collector to preheat the dust collector to perform the backup to the operation of the incinerator. ;SOLUTION: In such a state that the whole of a plant, especially, a dust collector 6 cools down before the operation of an incinerator 1, hot air is preliminarily introduced into the dust collector 6 and circulated while heated to preheat the dust collector 6 and, when the operation of the incinerator 1 is started, the dust collector 6 can be heated to required temp., for example, relatively low temp. hard to generate the absorption of steam is waste gas by a bag filter within the dust collector 6, for example, about 120°C. By this constitution, even if waste gas with a low temp. of about 120°C is introduced into the dust collector at the beginning of the operation of the incinerator 1, the dust removing function of the dust collector is developed without lowering the function of the bag filter of the dust collector and the dust collector 6 can be used from the beginning of operation.;COPYRIGHT: (C)1998,JPO