摘要：为了探讨新型横向极板电除尘器中荷电粒子驱进速度的变化规律,通过对荷电粒子进行受力分析,得到理论驱进速度的表达式;通过改变外加电压、除尘电场平均气流速度、异极距等参数进行除尘实验,根据多依奇公式,由除尘效率反推出荷电粒子的有效驱进速度,探讨各因素对有效驱进速度的影响规律。结果表明:在正常工作电压范围内,荷电粒子的有效驱进速度随着外加电压的增大而增大;随着除尘电场平均气流速度、异极距的增大,荷电粒子的有效驱进速度呈先增大后减小的趋势;通过对不同条件下荷电粒子的理论驱进速度与有效驱进速度进行拟合,得到半经验驱进速度表达式。

关键词：横向极板电除尘器；荷电粒子；驱进速度

Abstract：To obtain the drift velocity variation regularity of charged particles in a novel transverse plate electrostatic precipitator,the equation of theoretical drift velocity was deduced based on the force analysis of charged particles. The dust removal experiment was conducted by changing factors of applied voltage,mean airflow velocity,electrode and plate distance. The effective drift velocity of charged particles was deduced from dust removal efficiency according to Deutsch formula. The effect of each factor on the effective drift velocity was discussed. The results show that the effective drift velocity of charged particles increases with the increase of applied voltage under normal operating voltage. With the increase of mean airflow velocity as well as electrode and plate distance,the effective drift velocity of charged particles increases first and then decreases. The semi-empirical drift velocity formulas are obtained by fitting theoretical drift velocity with effective drift velocity of charged particles under different conditions.

Keywords: transverse plate electrostatic precipitator；charged particle；drift velocity