Using an improved electrostatic precipitator for PM2.5 removal

作者：Chang Jingcai^*; Tao Aiping; Gao Mingfeng; Song Jiaqiu; Ma Chunyuan

来源：Energy Education Science and Technology Part A: Energy Science and Research , 2014, 32(5): 3221-3230.

• Capillary
• Collection efficiency
• Gas residence time
• Initial concentration
• PM2.5
• Secondary currents
• Terylene collector
• Wet electrostatic precipitators

Typical wet electrostatic precipitators face several problems of higher consumption, dry spots and corrosion. An improved electrostatic precipitator with single terylene composite material collectors was put forward by Shandong University. This research was designed to test the performance of the composite fibrous as collection electrodes for PM2.5 control in the new wet ESP. The results show that the drop spreading curves were very similar on the front and reverse side of terylene composite material collectors. Test for electrical resistivity indicated that terylene collectors could be used instead of steel collector. Different methods were undertaken depending on the recorded data during the spreading test. The secondary currents were 1.8, 7.5, and 10.5mA for secondary voltage of 30, 50, and 60kV, respectively. There was not obvious link between initial concentration and collection efficiency in our tests. The average number collection efficiencies by terylene collector amounted to 88.3% for PM2.5 when the gas residence time was 4s at 60kV, which was higher than that by typical rigid collectors. The effects of water film evaporation on the temperature drop were not more sensible. As long as there was any water on the terylene surface, any particle would exhibit similar collection efficiencies.

• 出版日期2014