OPERATING METHOD FOR WASTE DRYING FACILITY

摘要

PROBLEM TO BE SOLVED: To provide an operating method for a waste drying facility capable of drying stably waste, big in the fluctuation of moisture. SOLUTION: Hot-air is sent from a hot-air furnace 1 into a drier 2 to dry the waste, then, a part of exhaust gas of the drier 2 is returned into the hot-air furnace 1 by a circulating fan 4. In the invention of the claim 1, a drier inlet temperature is detected to control the amount of returning air by the circulating fan 4 so as to obtain a constant value. In the invention of the claim 2, a drier exit temperature is detected to control the amount of oil supplied to a burner 7 for the hot-air furnace 1 and regulate the amount of oil supplied to the burner 7 in accordance with the increasing or decreasing tendency of an exhaust gas temperature of the drier 2.