Abstract. Exhaust gas treatment 藍間device of coal fired boiler has been 海村upgraded with ultra clean discharge見票 treatment technology, and the n白見ew cyclone gas cap wa謝兒shing device is applied in th車視e second half of the&nbs現工p;desulfurzing tower sys金話tm. This new water scrubbing tray syste動不m is composed with water sprays, cera笑長mic packing, cyclone gas cap and i個答ndependent water tank, which is proven他她 by field tests, has exce睡錢ling effect on exhaust gas treatment,又見 and can decrease concentr討讀ation of aerosol in exhaust gas to 國通below 5mg/Nm³ which is lower than the state discha兒門rge standard.