Wetting properties and performance of modified composite collectors in a membrane-based wet electrostatic precipitator

Abstract

The membrane-based wet electrostatic precipitator (MWESP), exhibiting good control of PM2.5, has more and more widely applications. Considering traditional flexible collectors’ poor rigidity, this paper presents two modified composite collectors (MCC), smooth PVC plates covered by carbon fiber and glass fiber respectively. This paper tries to make a comparative study of performance characteristic between both the MCCs and a same size smooth PVC collector. We compared the collectors in the aspects as follows: water film thickness, ionic concentration,V-I characteristic and dust collection efficiency. Firstly, we compared the three collectors’ film forming abilities through a water film thickness measure experiment. Secondly, we measured the ionic concentrations and V-I characteristics, getting the electrical characteristics of the three collectors. At last, through an experiment of collection efficiencies, we compared the three collectors’ performance characteristics. The experiment results indicate that MCC with glass fiber not only can guarantee the rigidity of collector, but also proves best wetting properties and best performance characteristic with the water flow rate of 700L/h.

Keywords

• membrane-based wet electrostatic precipitator
• water film thickness
• water flow rate
• v-i characteristics
• collection efficiency
• 68.08.bc
• 68.15.+e
• 51.50.+v