脱硫剂具有表面活性，催化氧化，促进SO2的直接反应，加速CaCO3的溶解，促进CaSO3迅速氧化成CaSO4，强化CaSO4的沉淀，降低液气比，减少钙硫比，减少水分的蒸发。当烟气入口SO2浓度增加，高于设计值时，吸收塔反应池内PH值降低，需要更大的Ca/S比时，在吸收塔反应池容积不需扩大的情况下，CaCO3能够快速溶解，增加钙离子浓度，保持浆液PH值在正常范围，对PH值有一定的缓冲作用。

Desulfurizing agent with surface activity, catalytic oxidation, direct reaction to promote the SO2, accelerate the dissolution of CaCO3, and promote the CaSO3 rapid oxidation of CaSO4, enhanced CaSO4 precipitation, reducing the gas liquid ratio, reduce the ratio of calcium to sulfur, reduce water evaporation. When the flue gas entrance SO2 concentration is higher than the design value, the absorption tower reactor to reduce the pH value, need more Ca/S than that in the absorber reaction tank volume without increasing the case, CaCO3 can quickly dissolved calcium concentration increased, keep the slurry pH in the normal range, there is a buffer effect on pH value.