Experimental Study on Efficiency of Electrostatic Enhancement Wet Fiber Grating Demist Precipitator for Fine Dust

Abstract

A electrostatic enhancement wet fiber grating demist precipitator was developed behind conventional coal-fired flue gas purification system to capture the fine dust at the outlet of wet flue gas desulfuration equipment and droplets of liquid absorbent. The electrostatic enhancement on wet fiber grating and the common was studied respectively. Effect of the filtration velocity and the number of fiber grating are compared and tested. Some conclusions were obtained as follows, it proved for the same filtration velocity, electrostatic enhancement collection efficiency were improved than without reinforcement. The dust collecting efficiency shows increased with the increasing of gas dust concentration. Research reveals how the dust density influences the effect of electrostatic enhancement fiber grating demist precipitator and finds that with the dust density increasing, the collection efficiency were gradually increased. And it had high removal effect on dust less than 2 μm in diameter, the classification efficiency could be up to 83.3%.