To provide a roasting facility juxtaposed to an incinerator, lower in device installation cost than a conventional one and sharply reduced in the amount of fuel used for re-combustion of exhaust gas in a roasting furnace compared with the conventional one.
The roasting facility juxtaposed to the incinerator having a primary combustion area for burning an incinerated object with primary air, and a secondary combustion area for burning combustion gas generated in the primary combustion area, with secondary air, and also having an exhaust gas treating facility for treating exhaust gas generated in the secondary combustion area, roasts ashes containing heavy metals and dioxin, in an reductive atmosphere while holding the ashes to a fusing point temperature or lower, wherein a passage for exhausting exhaust gas generated in the roasting facility is connected to the primary combustion area of the incinerator, and the exhaust gas generated in the roasting facility is led into the incinerator and burned again at 850°C or higher at which the dioxin is pyrolyzed and reduced.
COPYRIGHT: (C)2009,JPO&INPIT
Noriaki Senba
Matsuzaki Yasushi
Reiji Tahara
Kuranishi Minoru
Keita Inoue
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Masatake Shiga
Tadashi Takahashi
Tetsuo Yamazaki
Masahisa Takahashi