| 摘要 |
<p>PROBLEM TO BE SOLVED: To safely and completely decompose dioxin generated from an incineration furnace by adsorbing dioxin discharged from the incineration furnace on an activated carbon and oxidizing and decomposing a waste activated carbon, on which dioxin is adsorbed, in a supercritical water having equal to or above the critical temp. and critical pressure of water. SOLUTION: At the time of charging a refuse in the incineration furnace and combusting, dioxin is generated by incompletely combusting a chlorine-containing compound. Dioxin in a waste combustion gas is adsorbed on the activated carbon, the waste activated carbon and a fly ash are collected in a bag filter, in which water is added to form a slurry. The slurry is charged in a supercritical water oxidation device 9 to be treated by supercritical water oxidation. That is, the pressure of the device is elevated to the supercritical pressure of water by a high pressure compressor 11. Next, the slurry is forcibly charged in the reactor 12 by a high pressure pump 10 and simultaneously air is elevated in pressure by the high pressure compressor 11 to be forcibly fed to the reactor 12. The forcibly fed slurry is heated to the supercritical temp. of water by a heater 13 and the oxidation reaction proceeds in the reactor 12.</p> |
