Discharge characteristics and applications for electrostatic precipitation of direct current: corona with spraying discharge electrodes

Some new electrode configurations and high-voltage insulation methods have been employed in order to force the water sprays to pass across the near corona region. In these ways, the efficiencies of charging and collecting aerosol particles are increased. At the same time, the sprays ejected from the discharge electrodes can overcome some difficulties of electrostatic precipitation, such as the back ionization of dusts with high resistivity, the reentrainment of fine dusts and the fouling of discharge electrodes. In recent years, there are increasing demands for the researches of the theory and the application on this type of corona discharge. In this paper, we introduced the discharge characteristics and some examples of the applications of the direct current corona with spraying discharge electrodes. (C) 2002 Elsevier Science B.V. All rights reserved.