脱硫塔中的设备主要包括搅拌器，氧化风管，喷淋管，除雾器，其他方案包括挡板或均匀分布地板。位于脱硫塔底部的搅拌器主要起到泥浆搅动的作用，防止石膏等颗粒的沉积。

氧化管道主要是将空气注入塔内的泥浆池中，将亚硫酸盐氧化成硫酸盐，配套设备是氧化风扇。管道是将浆料通过循环泵送到脱硫塔浆池区，通过喷嘴雾化并分散，然后吸收烟道气中的SO2气体。除雾器的主要作用是去除烟道气中携带的液滴，即去除水的作用。

脱硫剂的表面具有活性、催化氧化的作用之外，这种设备还可以直接地促进SO2反应，使CaCO3的溶解加快，促进CaSO3向CaSO4的快速氧化，使CaSO4的沉积加强，并且还可以让液气比，钙的比例降低，去硫，减少水的蒸腾作用。

当烟气入口SO2浓度高于计划值时，吸收塔反应池中的PH值将降低，并且当需要更大的Ca / S比时，无需扩展CaCO3即可迅速溶解CaCO3。加入钙离子使浆料的PH值保持在正常范围内，对pH值有一定的缓冲作用。

The equipment in the desulfurization tower mainly includes agitator, oxidation air pipe, spray pipe and demister. Other schemes include baffle or evenly distributed floor. The agitator at the bottom of the desulfurization tower mainly plays the role of slurry stirring to prevent the deposition of gypsum and other particles.

The oxidation pipeline mainly injects air into the mud pit in the tower to oxidize sulfite into sulfate. The supporting equipment is oxidation fan. The pipeline sends the slurry to the slurry tank area of the desulfurization tower through the circulating pump, atomizes and disperses through the nozzle, and then absorbs the SO2 gas in the flue gas. The main function of demister is to remove the droplets carried in flue gas, that is, to remove water.

In addition to the active and catalytic oxidation on the surface of desulfurizer, this equipment can also directly promote the SO2 reaction, accelerate the dissolution of CaCO3, promote the rapid oxidation of CaSO3 to CaSO4, strengthen the deposition of CaSO4, reduce the liquid-gas ratio and calcium ratio, remove sulfur and reduce the transpiration of water.

When the SO2 concentration at the flue gas inlet is higher than the planned value, the pH value in the reaction tank of the absorption tower will decrease, and when a larger Ca / S ratio is required, CaCO3 can be dissolved quickly without expanding CaCO3. Adding calcium ion keeps the pH value of the slurry within the normal range and has a certain buffer effect on the pH value.