Based on multiphase flow theory and capillary mechanics, the dimensionless bond number expression of the influence of string grille wire spacing on droplet spreading is derived. Taking a liquid film formed by spreading droplets based on Kelvin correlation, the Young–Laplace equation, and the Hagen–Poiseuille law, an equation for calculating the thickness and height of the liquid film is established with temperature, relative humidity and molar volume of liquid phase as independent variables. According to the theory of string grille filtration and dust removal, a dust removal efficiency calculation model covering the wet string grille wire group is constructed based on the liquid film thickness, height, wire diameter, water film area, and vortex shedding frequency. Finally, a theoretical analysis of the influence of water film area on the efficiency of wet string grille dust removal is carried out based on the spray pressure and the ratio of string grille wire distance to wire diameter. It is found that the effect of spray pressure on water film area and dust removal efficiency is more significant than the string grille wire distance diameter ratio. Moreover, the optimized combination of wet string grille wire distance diameter ratio 0.84, wind speed 3 m/s and spray pressure 0.8 MPa is found, which could provide an important reference for engineering applications.

基于多相流理论和毛细管力学，推导出串格栅线间距对液滴扩散影响的无量纲键数表达式。以基于开尔文相关性、杨-拉普拉斯方程和哈根-泊肃叶定律的液滴扩散形成的液膜为基础，建立液膜厚度和高度与温度、相对湿度和液体摩尔体积的计算公式相作为自变量。根据串式格栅过滤除尘理论，基于液膜厚度、高度、线径、水膜面积、涡旋脱落频率，构建了覆盖湿式串式格栅线组的除尘效率计算模型。最后，基于喷淋压力和线栅线距与线径比，对水膜面积对湿线栅除尘效率的影响进行了理论分析。发现喷淋压力对水膜面积和除尘效率的影响比串式格栅线距直径比的影响更显着。此外，还找到了湿弦格栅线距直径比0.84、风速3 m/s、喷雾压力0.8 MPa的优化组合，可为工程应用提供重要参考。发现喷淋压力对水膜面积和除尘效率的影响比串式格栅线距直径比的影响更显着。此外，还找到了湿弦格栅线距直径比0.84、风速3 m/s、喷雾压力0.8 MPa的优化组合，可为工程应用提供重要参考。发现喷淋压力对水膜面积和除尘效率的影响比串式格栅线距直径比的影响更显着。此外，还找到了湿弦格栅线距直径比0.84、风速3 m/s、喷雾压力0.8 MPa的优化组合，可为工程应用提供重要参考。