OPERATION METHOD FOR PLASMA TYPE ASH MELTING FURNACE

摘要

PROBLEM TO BE SOLVED: To provide an operation method for a plasma type ash melting furnace capable of preventing plasma arc from being eliminated when molten metal accumulated at the bottom part of the ash melting furnace is discharged while the ash melting furnace is operated. SOLUTION: In this operation method for the plasma type ash melting furnace generating molten slag 23 by throwing incineration ash in the furnace chamber 6 of a furnace body 2 and heating and melting the incineration ash by the plasma arc, an arc length is obtained by using the level height of the slag and the height of the lower end part of a main electrode 4 as viewed by an infrared camera 17, and a length between the lower end part of the main electrode 4 and the level of the molten slag is adjusted to a prescribed value or within a prescribed range. COPYRIGHT: (C)2006,JPO&NCIPI