REFUSE GASIFYING/MELTING FACILITY AND CONTROL METHOD THEREOF

摘要

PROBLEM TO BE SOLVED: To suppress abnormal phenomenon by detecting firing of refuse in a thermal decomposition furnace and firing of thermal decomposition residue in a thermal decomposition residue transfer unit using respective detection values thereby sensing an abnormal phenomenon disturbing normal operation. SOLUTION: Shell section 22 of a thermal decomposition furnace 2 is coupled with a heat carrier supply pipe 211 and piping 213 for supplying cooling water 212. When a decision is made that abnormal temperature rise (firing of refuse or thermal decomposition residue) is present in the reaction vessel of a thermal decomposition furnace, a controller delivers an alarm and switches a switching valve 214 not to supply heat carrier to the shell section 22 from the heat carrier supply pipe 211 but to supply cooling water thereto from the cooling water piping 213 in order to cool the reaction vessel 23 forcibly. At the same time, operation for increasing the current velocity of nitrogen 20 is carried out. In this regard, the controller may interrupt refuse supply to the thermal decomposition furnace 2 by interrupting operation of a refuse feeder 2B.