CEMENT KILN EXHAUST GAS TREATMENT APPARATUS AND TREATMENT METHOD

摘要

PROBLEM TO BE SOLVED: To efficiently treat a cement kiln exhaust gas at a low cost while effectively utilizing heat energy in an ecological cement kiln exhaust gas.SOLUTION: A cement kiln exhaust gas treatment apparatus 1 comprises: a heat recovery device (boiler) 4 recovering heat from the exhaust gas G1 of an ecological cement kiln 2; a high temperature dust collector 7 collecting dust D in the exhaust gas G3 of the heat recovery device 4; a catalyst device 8 removing harmful matter in the exhaust gas G4 of the high temperature dust collector 7; and a wet dust collector (wet scrubber) 9 performing the wet dust collection of the exhaust gas G5 of the catalyst device 8. A calcium component addition device 6 adding a calcium component into the exhaust gas of the heat recovery device 4 can be provided. A classifier (cyclone) 5 separating the exhaust gas G2 exhausted from the heat recovery device 4 to coarse powders C and the gas G3 including fine powders and supplying the gas including the fine powders to the high temperature dust collector 7 is preferably provided.SELECTED DRAWING: Figure 1