ABSTRACT
ABSTRACT: In order to collect the fine particle in the industrial gas, an electrostatic enhancement bag filter with reversed electric field has been developed. The effect of external electric field of different polarities and field strength on collection efficiency of electrostatic enhancement bag filter has been researched. Contrast experiments on bag filter of charged particles without electric field, electrostatic enhancement bag filter with forward electric field and electrostatic enhancement bag filter with reversed electric field show that collection performance of electrostatic enhancement bag filter with reversed electric field is significantly better than the others for removal of PM2.5. When filtration velocity is increased from 1.0 m/min to 2.5 m/min, collection efficiency of electrostatic enhancement bag filter with forward electric field reduces more than 15%, while effect of electrostatic enhancement increases less 3%. Meanwhile, collection efficiency of electrostatic enhancement bag filter with reversed electric field reduces less that 10%, while effect of electrostatic enhancement increases from 5% to 10.7%. When the field strength is increased to 3.0 kv/cm, enhancement of electrostatic enhancement bag filter with reversed electric field increases 10.7%. Electrostatic enhancement bag filter with reversed electric field at high filtration velocity reflects a distinct advantage.
