| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for operating a gasification melting furnace for suppressing a rise in a temperature inside the furnace of the melting furnace even when increasing industrial wastes are treated in large amounts more than ever, keeping the life of the furnace, and preventing blockage of the aeration nozzle of the fluidized bed of the fluidized layer type gasification furnace when dust collected from a rapid cooling tower, dust caught by a bag filter, and dust collected from neutralized slag collected after drainage treatment of cleaning liquid in a neutralizing tower or mist cottrell, are treated again in the gasification melting furnace. <P>SOLUTION: In this method for operating the gasification melting furnace, the fluidized layer is formed by air blown into from a lower part side, thereby gasifying a part of the industrial wastes thrown in the fluidized layer type gasification furnace by heat decomposition, and collecting incombustible waste including valuable metal. Moreover, pyrolysis gas formed in the gasification furnace and the part of the incombustible waste transferred by the pyrolysis gas are treated in the melting furnace, thereby forming the slag. Dust including calcium is slurried and blown into the melting furnace. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
