| 摘要 |
<p>PROBLEM TO BE SOLVED: To decompose dioxins and to prevent an increase in discharge od ash and CO2 by obtaining the unburned ash or unburned-ash activated carbon necessary to adsorb and remove the dioxins in a waste gas from such waste as refuse to be disposed of and treating the spent unburned ash or spent unburned-ash activated carbon at high temps. in the system. SOLUTION: In this device, the waste such as refuse is partially burned, the unburned gas thus generated contg. unburned ash is introduced into a dust collector 14 with the collecting efficiency variable, and the unburned ash is collected from the unburned gas in the amt. necessary to adsorb and remove the dioxins in the waste gas from the combustion of the unburned gas. The collected unburned ash is supplied to the dust collector, e.g. a bag filter 16, in the waste gas treating line along with the waste gas, and the spent unburned ash from the bag filter 16 is returned to the ash melting furnace 22 or unburned gas combustion furnace and heated to thermally decompose the dioxins in the ash.</p> |
