Method for inhibiting elution of harmful trace elements and coal fired power generation system

摘要

To provide a method for inhibiting harmful trace elements elution which can suppress the occurrence of slugging and fouling in a combustion boiler while suppressing elution of harmful trace elements from coal ash.A pulverized coal machine 141 for pulverizing the coal to produce pulverized coal, a combustion boiler 16 for burning pulverized coal produced by the pulverized coal machine 141 with primary air and secondary air supplied to the latter stage of the primary air, And supplying an elution inhibitor for suppressing elution of harmful trace elements from the combustion residues of pulverized coal together with secondary air to the combustion boiler 16. The method for suppressing elution of harmful trace elements in a coal-