Affiliations: School of Resource and Civil Engineering, Northeastem
University, Shenyang 110006, China. E-mail: bzchen@ mail. neu. cn | Institute for Environmental Research, Department of
Biological and Chemical Sciences, University of Essex, Colchester CO4 3SQ,
Abstract: In older to collect fine particles more efficiently, a new-type
electrostatic agglomerator with two sones was developed. The distinguishing
feature of this electrostatic agglomerator is that the particles are bipolarly
charged and coagulated in the same alternating electric field simultaneously.
The silica flour with 2 µm mass median diameter and the smoke from
burning wood powder were used as test aerosol. The comparison experimental
results have shown that when the mean electric field is 4 kV/cm the collection
efficiency of the new electrostatic agglomerator was 98.2% for silica flour and
67.4% for wood powder smoke. Under the same experimental condition, the
collection efficiency of the electrostatic agglomerator with three zones was
97.4% for collecting silica flour and the collection efficiency of the
electrostatic precipitator was 56.3% for wood powder smoke.