湿法脱硫系统除尘效果分析与提效措施

通过对湿法脱硫装置开展除尘效率试验，研究影响脱硫装置除尘效率的主要因素，研究发现，脱硫装置对高浓度粉尘洗尘效果更为明显，目前脱硫装置综合除尘效率在50%左右。同时，实际运行时脱硫装置出口雾滴含量均高出设计值，雾滴中存在的固体颗粒是导致除尘效率偏低的关键因素之一。最后，提出了脱硫改造中除尘效率的提效措施，以实现脱硫的协同除尘作用，为下一步脱硫改造提供相关思路。

Analysis of Dust Removal Effect in Wet-FGD System and its Efficiency-Enhancement Techniques

Through the test on dust removal efficiency of Wet-FGD, the major contributing factors are studied, in which FGD exhibits outstanding performance in dust removal under conditions of higher inlet dust concentration. Presently, the comprehensive dust removal efficiency reaches as high as about 50%. Meanwhile, under normal conditions, the mist contents in FGD’s outlet flue gas are higher than the designed value, hence the solid particles in the mist is one of the key factors which leads to the low dust removal efficiency. Therefore, several enhancement techniques are proposed to improve the dust removal efficiency of FGD system such that the collaborative dust removal can be realized in FGD system, which can also inspire new ideas for the subsequent FGD retrofit work.