METHOD FOR SUPPRESSING ELUTION OF HEXAVALENT CHROMIUM FROM INCINERATION FLY ASH OF FUEL CONTAINING CHROMIUM AND COMBUSTION APPARATUS TO BE USED THEREFOR

摘要

PROBLEM TO BE SOLVED: To more economically and reliably suppress elution of hexavalent chromium from fly ashes discharged out of a combustion apparatus using a chromium-containing organic matter as a fuel for a long time.;SOLUTION: In a combustion apparatus using the chromium-containing organic matter as a fuel, an auxiliary reaction agent is blown upstream of a bag filter for cleaning treatment of combustion gas and the fly ashes trapped by the bag filter are fired to transform the hexavalent chromium in the fly ashes into a stable chromium mineral and thus suppress elution of hexavalent chromium.;COPYRIGHT: (C)2009,JPO&INPIT