METHOD FOR TREATING SOOT AND DUST AND TREATMENT DEVICE FOR SOOT AND DUST

摘要

PROBLEM TO BE SOLVED: To provide a method for treating soot and dust and a treatment device for soot and dust capable of easily accomplishing harmlessness of boron contained in the soot and dust in flue gas and simultaneous harmlessness of boron and selenium. SOLUTION: In order to remove the soot and dust contained in the flue gas, the method for treating the soot and dust includes a dust collection step for separating the soot and dust in the flue gas; and a mixing step for adding and mixing a calcium compound 29 as an elution preventing agent of boron, if necessary, an iron (trivalent) salt 30 as an elution preventing agent of selenium to the soot and dust 27 separated by the dust collection step 21.