| 摘要 |
PROBLEM TO BE SOLVED: To protect a dust collector and perform dust removal with high efficiency and removal of dioxin or the like without executing a volume control of combustion air of an incinerator which is difficult to be carried out and without affecting the prevention of the generation of white smoke. SOLUTION: This temperature control method heat-exchanges waste gas produced after water injection cooling with an indoor air at a first heat exchanger 4 an feeds into an incinerator as combustion air and heat-exchanges with a white smoke preventive indoor air with a second heat exchanger 5 of its supply system 13 and mixes the heated white smoke generation preventive indoor air with the waste gas which is dust-removed with a dust collector 6 and then exhausts the gas from an exhaust stack 11. In this case, the temperature of the waste gas in front of the dust collector 6 is detected. When the detected temperature exceeds a specified value, the amount of combustion air to the second heat exchanger is divided and reduced, thereby lowering the temperature of the combustion air to the incinerator 1 while the divided heated air is partially fed into the waste gas which has passed the duct collector 6 directly, thereby controlling the temperature of waste gas which flows into the dust collector 6 so that it may become a specified value. |
