| 摘要 |
<p>PROBLEM TO BE SOLVED: To permit combustion and melting of sludge with one stage of treatment, by a method wherein dried swage, sludge, or the like is transported by air stream to blow the same into a melting furnace to produce high-temperature reduced gas through partial combustion of organic matter in the sludge and, simultaneously, melt inorganic matter in the sludge to recover slag type solid matter. SOLUTION: Upon transporting dried sludge into a melting furnace 3 by air stream when the sludge generated by the disposal of sewage through incineration is disposed, the sludge is gasified by blowing the dried sludge and oxygen or oxygen-enriched air by a burner 8, then, the dried sludge is guided out of the melting furnace 3 into a cooling furnace 4. In this case, the molten particulate slag is collided against the side wall of the molting furnace 3 to liquefy the same and drop the same from a slag discharging port 10 into a water pot 11 to cool the same and, thereafter, the same is discharged after being solidified. Produced gas is cooled in the cooling furnace 4 and, thereafter, the same gas is allowed to cool and solidifies molten slag, accompanied by gas from the melting furnace 3. Thereafter, slag in the cooled gas is removed by a cyclone 5 and the heat of the cooled gas is recovered by a boiler 6 while the slag is removed again by a dust collector 7.</p> |
