| 摘要 |
PROBLEM TO BE SOLVED: To make incineration ash harmless efficiently and at a low cost, by preventing generation of dioxins by complete combustion and neutralization treatment and by removing heavy metals contained in incineration fly ash, to reuse as a resource. SOLUTION: Generation of dioxins is prevented by using a two-stage swirling fluidized bed type incinerator a main body of which is composed of a first stage swirling fluidized bed chamber 1-1 and a second stage gaseous swirling stream chamber 1-2 from its bottom part. A gas cooling chamber 27 fitted with a soldier's camp hat is provided at a top of a central shaft of the second stage gaseous swirling stream chamber, a high pressure air entrance is communicated with a side plate of a lowest part of the cooling chamber and waste water treatment is executed by stirring the incineration fly ash in waste water occurred from cooling water. Further an exhaust gas chamber 29 is provided at a top of a central shaft of the gas cooling chamber, a chimney is provided at a top of the central shaft and is communicated therewith, a large number of orifice nozzles 34 are arranged at its lower part. By sending high pressure hot air therein, a third stage swirling stream is formed and then is blended with an exhaust gas containing a large amount of water vapor to prevent generation of white smoke.
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