中文摘要：

基于石灰石-石膏湿法烟气脱硫(WFGD)工艺，通过数值计算获得脱硫塔进口烟气温湿度对塔内过饱和水汽环境的影响规律，并试验考察了塔入口烟气参数及脱硫操作条件对SO3酸雾脱除特性的影响。结果表明，通过调节脱硫塔入口烟气温湿度可使塔内形成SO3酸雾凝结长大所需的过饱和水汽环境，适当降低塔入口烟温或提高塔入口烟气湿度可有效提高WFGD系统对SO3酸雾的脱除效果，脱除效率可从40%增至60%左右；同时，适当提高脱硫液气比及降低浆液温度有利于促进SO3酸雾的脱除，脱除效率可提高10%左右。

英文摘要：

A novel process was proposed to improve removal efficiency of sulfuric acid droplets byheterogeneous condensation in limestone-gypsum wet flue gas desulfurization system(WFGD).Numericalcalculation results indicate that supersaturation vapor environment is established in the SO2absorption zone byadjusting temperature and humidity of WFGD inlet flue gas.Effects of inlet flue gas parameters and operationconditions of WFGD on the removal efficiency of sulfuric acid droplets were investigated.The results show thatinlet flue gas with high humidity and relatively low temperature is beneficial for the establishment ofsupersaturation vapor environment in the SO2absorption zone,and the removal efficiency can be improvedfrom40%to60%.Furthermore,the removal efficiency of sulfuric acid droplets can also be enhanced byincreasing liquid-to-gas ratio or decreasing desulfurization slurry temperature,where the removal efficiency canbe improved by about10%.