電気集じん装置におけるナノ粒子の集じん率向上

概要

論文の詳細を見る
Electrostatic precipitators are used in decontaminating polluted gases in expressway tunnels in order to improve both driver safety and the environment around the tunnels. A conventional electrostatic precipitator has high collection efficiency but is still needed to improve collection efficiency for nano-particles smaller than 0.1 μm. The experiments carried out in this study have focused on improving nano-particle collection efficiency without using additional energy. The experimental electrostatic precipitator was a two-stage type consisting of a pre-charger and a collector. The collector had a parallel-plates configuration, including a grounded electrode and a high voltage electrode. A hole-punched stainless plate was used as the high voltage electrode in order to improve nano-particle collection efficiency. The collection efficiency as a function of the particle diameter was studied. As a result, the nano-particle collection efficiency on the ESP with the hole-punched high voltage electrode was significantly improved. In the case of certain number of hole, the nano-particle collection efficiency increases with increasing the punched hole diameter. In the case of the constant of aperture rate, the nano-particle collection efficiency increases with decreasing the punched hole diameter. This effect is probably due to increasing the electric field intensity near the hole edges of the hole punched electrode.
社団法人電気学会の論文
2008-06-01