To provide a thermal decomposition system smoothly performing residue discharge operation, easy in maintenance, and advantageous to cost.
A residue discharge control means 33 fully opens only an upper damper 15 for a prescribed time, when becoming the prescribe time. Thus, a residue 12 is gathered on a lower damper 16. Next, the residue discharge control means 33 fully opens the lower damper 16, after fully closing the fully opened upper damper 15, and drops the gathered residue 13 in a chute part 17. Thus, since any one of the upper damper 15 or the lower damper 16 is surely put in a fully closing state, even if air exists on the downstream side of the lower damper 16, this air does not intrude in a rotary drum 4 of a pyrolytic furnace 3.
COPYRIGHT: (C)2005,JPO&NCIPI
Kazutaka Ojo
Nakashima Ryo
Takashi Amemiya
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