凝聚器与电除尘器新技术对颗粒物去除效果的试验研究

以中国某135 MW燃煤机组为研究对象，研究凝聚器与电除尘器移动电极、高频电源等新技术对电除尘器出口颗粒物排放的影响。结果显示：凝聚器装置开启后，电除尘器出口总颗粒物和PM2.5排放浓度降幅分别为23.93%~40.16%和39.54%~55.21%；移动电极运行后，电除尘器出口总颗粒物和PM2.5排放浓度降幅分别为25.46%~56.59%和11.68%~33.18%；高频电源放开后，电除尘器出口总颗粒物和PM2.5排放浓度降幅分别为12.81%~21.27%和22.11%~43.11%。试验表明：凝聚器与电除尘器新技术能够显著提高电除尘器的除尘效率，尤其是减少PM2.5的排放，其在除尘设备的改造和升级中会发挥重要作用。

Experimental Study on the Effects of Agglomerator and New ESP Technologies on Particulate Removal Efficiency

In this paper, the effects of agglomerator and some new ESP technologies(such as mobile electrode duster and high-frequency power supply) on particulate emissions are studied for a 135-MW coal-fired power generating unit. The results show that with the agglomerator being turned on, the concentrations of the total particulate matter and PM2.5 are reduced by 23.93%~40.16% and 39.54%~55.21%, respectively, while with the mobile electrode in operation, the concentrations of the total particulate matter and PM2.5 are decreased by 25.46%~56.59% and 11.68%~33.18%, respectively. Moreover, with the high-frequency power supply being turned on, the concentrations of the total particulate matter and PM2.5 are decreased by 12.81%~21.27% and 22.11%~43.11%, respectively. This experimental study indicates that the agglomerator and the new technologies can significantly improve the collection efficiency of the electrostatic precipitator, especially for the emission reduction of the PM2.5 particles. It is certain that they will play an important role in the innovation and upgrading of dust removal devices.