Abstract. Exhaust gas treatment device of coal 車在fired boiler has been志年 upgraded with ultra clean disch微紅arge treatment technology, and the new cycl你吧one gas cap washing 線農device is applied in the second h靜光alf of the desulfurzing tower systm. This new wa綠快ter scrubbing tray system is composed人森 with water sprays, ceramic那文 packing, cyclone gas cap and indepe放習ndent water tank, which is proven by 外廠field tests, has exceling不會 effect on exhaust gas treatment,中如 and can decrease co白子ncentration of aerosol in exhaust gas 是明to below 5mg/Nm³ which is lower than the state discharge standa大議rd.