| 摘要 |
PROBLEM TO BE SOLVED: To recover carrying-out beat of molten slag and to heat ash to be molten by the heat with high efficiency by providing a heat-exchanger to exert the latent heat of molten ash (molten stag) discharged from a melt furnace on gas and a heater to heat ash to be molten by gas discharged therefrom. SOLUTION: High temperature slug from a slug box 19 is moved to a heat- exchanger 3. The heat-exchanger is provided at a bottom with a slug discharge apparatus 20 and an air feed pipe 21 and at an upper part with a high temperature slug introduction pipe and a high temperature air discharge pipe 23. The slug discharge apparatus 20 lowers and moves high temperature slug 22 in the heat-exchanger 3 and discharges particles in the heat-exchanger 3 to the outside of the apparatus and air is supplied through an air supply pipe 21 to the heat-exchanger 3. Air increased in temperature through heat-exchange is taken out from a high temperature air discharge pipe 23 and supplied to a heater 4. This constitution recovers the carry-out heat of molten slug and heats ash to be molten by the heat, whereby high-efficient melt treatment is practicable. |
