Abstract. Exhaust gas treatment dev學聽ice of coal fired boiler呢窗 has been upgraded with ultra clean d醫議ischarge treatment technology, and the new 我身cyclone gas cap washing device is appli這師ed in the second hal去懂f of the desulfurzing tower syst大農m. This new water scrubbin議可g tray system is composed with water 到我sprays, ceramic packing, cyclone gas 線嗎cap and independent wat站飛er tank, which is proven朋物 by field tests, has exceli光在ng effect on exhaust gas treatment, a友內nd can decrease concent街多ration of aerosol in ex場西haust gas to below 5mg/Nm³ which is lower than the state discha化車rge standard.