中文摘要：

荷电水雾可有效提高液滴捕集微细颗粒物的效率,其中液滴的荷电特性是影响荷电水雾除尘效率的重要因素。为此,从水雾感应荷电理论出发,建立了液滴群荷电量的理论计算式,通过改变荷电电压、电极间距、雾化压力以及电极环直径,实验研究了各种因素对液滴荷质比的影响规律,并测试了喷雾特性。实验研究结果表明：液滴荷质比随荷电电压的升高而先增大后减小,随电极环直径的增大而减小,随电极间距的增大而增大;液滴的荷电效果与雾化压力有关,且对于同一喷嘴存在荷电效果最佳的雾化压力值;液滴粒径随荷电电压的增大而逐渐减小,且当液滴粒径较小时,荷电电压对液滴粒径的影响相对较弱。该研究结果对于提高液滴的荷电效果、促进荷电水雾在控制微细颗粒物方面的应用具有重要的指导意义。

英文摘要：

Charged-spray can effectively improve the removal efficiency of fine particulate matter. The charging of spray is an important factor affecting the removal efficiency of fine particulate matter. We established a theoretical computation formula of droplet group based on the water induction charged theory to study the influences of various factors on the charge-mass ratio of droplet by changing the charged voltages, electrode gaps, atomization pressures, and annular elec- trode diameters, and we tested the spray characteristics. The experimental results show that the charge-mass ratio of droplet increases first then decreases as the charged voltages increase, decreases as the annular electrode diameter in- creases, and increases as the electrode gaps increase ; the charging of spray is related to the atomization pressures, and there is an optimal atomization pressure value for each nozzle; the droplets size decreases as the charged voltage increases, the charged voltage has a weak impact on the droplet size when the droplet size is small. The experimental results have an important guiding significance in the improvement of charging performance of droplet and the application of charged-spray in control of fine particulate matter.