低浓度SO_3测试方法及湿式电除尘器SO_3排放特征

SO_3 Test Method of Low Concentration and SO_3 Emission Characteristics of WESP

采用冷凝法或冷凝法与异丙醇吸收相结合的采样方法测定SO_3。结果表明,不同型式的湿式电除尘器SO_3排放一般在5mg/m^3以下,SO_3脱除效率一般在60%~80%,导电玻璃钢湿式电除尘器板电流密度一般比金属极板湿式电除尘器大,因此其SO_3脱除效率普遍更高。

The paper adopts the sampling method of the condensation method or the condensation method combined with isopropanol absorption method to determine SO3. The result shows that the SO3 emissions of different type WESP characterization are generally below 5mg/m3, and the SO3 removal effciency is 60%~80%. The current density of conductive glass fber reinforced plastics of WESP is generally larger than that of metal plate WESP, so its SO3 removal effciency is generally higher.