抄録
Electrostatic precipitator (ESP) has been used to improve the visibility index and clean the air in highway tunnels. Most of particles in the highway tunnels are composed of carbon. Decrease of the collection efficiency due to particle re-entrainment is important problem when ESP collects carbon particles that have low electric resistance. In this work, we discuss the exhausting process of re-entrained particles from ESP. The process was discussed by particle deposit condition on collecting electrodes. The results show that the collected particles on collecting electrodes migrate to downstream with jumping between grounded and positive collecting electrodes. The particle shapes change into sphere from pearl chain when particles have been jumped between collecting electrodes. Therefore, re-entrained particles deposit on middle of electrodes.
