To provide a gasification furnace in which an organic fuel fed to the interior of the furnace does not cause accumulation in unburned state and to provide a method for preventing occurrence of unburned material in the gasification furnace.
A rotary grate structure composed of an openable rotary grate is installed in the vicinity of a gasifying agent-injecting inlet in a furnace body. The unburned material of the organic fuel dropping toward the furnace bottom is caught by a rotary grate structure and the caught unburned material is retained in a state in which the rotary grate is closed until the unburned material is sufficiently burned. In the gasification furnace, an opening and closing means of the grate is preferably installed.
COPYRIGHT: (C)2006,JPO&NCIPI
Takeno Keiji
Toshimitsu Ichinose
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Jun Takamura