（1）气液间有较大的接触面积和 (1) there is a greater area of contact between the liquid 一定的接触时间； A certain amount of contact time; （2）气液间扰动强烈，吸收阻力小，对SO2的吸收效率高； (2) the disturbance between the air and liquid is strong, the absorption resistance is small, and the absorption efficiency of SO2 is high. （3）操作稳定，要有合适的操作弹性； (3) to operate in a stable, flexible operation; （4）气流通过时的压降要小； (4) the pressure drop when the air flow passes; （5）结构简单，制造及维修方便，造价低廉，使用寿命长； (5) simple structure, convenient manufacturing and maintenance, low cost, long service life; （6）不结垢，不堵塞，耐磨损，耐腐蚀； (6) not fouling, not blocking, wear-resisting, corrosion resistant; （7）能耗低，不产生二次污染。 (7) low energy consumption, no secondary pollution.