<報文>大型プラズマ炉による都市ごみ焼却灰の溶融処理

概要

論文の詳細を見る
Incinerator residue from the incinerating of municipal solid wastes has been, in most cases, disposed by burying it underground. Because of the difficulty to secure land for landfill with the increase of the residue, however, it has become extremely important to develop a process to reduce its volume and to make it harmless. The authors have confirmed, using a 240kW DC plasma arc furnace, that plasma arc melting process is available for treatment of the residue. In this work, plasma arc melting of the residue is examined using a larger-scale plasma arc furnace developed for the practical use. Under an air-plasma arc heating, the residue is melted perfectly and separated into two phases, molten slag and molten metal. Power consumption is 0.60kWh/kg of the residue at the melting rate of 24ton/d. It is confirmed that plasma arc melting reduces the volume of the residue by 1/2 and makes it harmless completely. Also, the slag obtained through melting the residue is expected to be reused as roadbed materials and so on.incinerator residueplasma arc meltingwaste disposallandfillenvironmental engineeringrecycle
東北大学の論文
1994-03-30