液柱冲击塔湿法烟气脱硫的试验研究

设计了一种新型的液柱冲击塔脱硫装置，通过冷态试验研究各种结构和运行参数的变化对液柱冲击塔脱硫效率的影响。研究结果表明，在试验范围内，液柱冲击塔的脱硫效率随着喷液密度、塔内风速、液气比、循环水池pH值、烟气入口温度的增大而提高，随着SO2入口质量浓度的增大而降低。减小液柱冲击塔阻挡层的通流截面或阻挡层与液柱喷嘴之间的距离可以有效改善脱硫浆液的雾化效果，从而显著提高脱硫效率。选择适当的结构和运行参数，液柱冲击塔的脱硫效率可以达到95%以上。

Experimental study of wet flue gas desulphurization of impinge liquid column tower

A new type of impinging liquid column tower for wet flue gas desulphurization(WFGD) was built in laboratory.The effects of different geometry and operation parameters on the desulphurization efficiency in the scrubbers were studied on an experimental platform.The main influencing factors include: slurry flux density,flue gas velocity,pH in the circulating tank,inlet mass concentration of SO_2,temperature of the inlet flue gas,and the configurable factors such as height of block and cross-section of scrubber.The results indicate that the desulphurization efficiency increases with increasing slurry flux density,flue gas velocity,pH in the circulating tank and inlet temperature of the flue gas,but that the efficiency decreases with increasing inlet mass concentration of SO_2. Decrease of the scrubber cross-section or the distance between the impinging plate and the nozzle results in better atomization,which greatly increases the desulphurization efficiency.With optimized geometry and operation parameters,the desulphurization efficiency can be improved to 95%.