WASTE THERMAL DECOMPOSITION TREATMENT DEVICE

摘要

PROBLEM TO BE SOLVED: To suppress a chlorine concentration of a thermal decomposition gas which constitutes a thermal decomposition product at a low level, which enhancing a reliability of a heat recovery device and enabling an efficient heat recovery in a waste thermal decomposition treatment device. SOLUTION: A waste thermal decomposition treatment device comprises a waste combustor which burns and thermally decomposes a waste, a waste heat steam generator 5 which generates a steam using a high temperature product generated by the waste combustor as a heat source medium, and an air heater 6 which heats a combustion air for the waste combustor. An exhaust gas discharged from the waste combustor is used as a heat source medium of the air heater 6. The waste combustor includes a dryer 1 which thermally decomposes an organic chloride and removes chlorine and a thermal decomposition device 2 which thermally decomposes the waste dried by the dryer at a low temperature of 450-500 deg.C and produces a thermally decomposed gas of a low chlorine concentration by restricting a formation reaction of hydrogen chloride from alkaline salt. An exhaust discharged from the thermal decomposition device is burnt in a gas combustion gas device and this combustion gas is used as the heat source medium for the air heater 6.