电凝并强化电袋复合除尘器除尘性能研究

Enhanced Dust Removal Performance of Electrostatic-Fabric Integrated Precipitator by Electrostatic Agglomeration

利用电凝并器及电袋复合除尘器综合实验平台,研究电凝并强化下系统总除尘效率、分区效率、微细粒子分级除尘效率和电场区及滤袋区捕集粉尘的粒径分布变化情况。结果表明,电凝并强化了电袋复合除尘器电场区除尘效率和总除尘效率,电场区效率增加了5.38%,总除尘效率提高了0.03%;特别对于5μm以下的粉尘,在电凝并器的协同作用下,分级效率较无电凝并器作用下提高了5%~7%。电凝并器工作电压和电场区电压对除尘效率影响较大,电凝并器电压由±16 k V提高到?40 k V,总除尘效率由99.76%增加到99.96%;电凝并强化下电场区电压由25 k V增加到65 k V时,总除尘效率由99.813%增加到99.971%,电场区效率由21.73%增加到70.17%,0~5μm粉尘的分级效率由20%~30%提高到55%~65%。

Based on experimental platform of agglomerator and electrostatic-fabric integrated precipitator, the efficiency of overall system, electric field area, and grade collection of fine particles were studied. The particle size distribution of collected dust in electric field area and fabric area were also focused. The results showed that the addition of electrostatic agglomeration increased the efficiency of overall system and electric field area by 0.03% and 5.38%, respectively. The grade collection efficiency of the fine particle with diameter less than 5μm can even increase by 5%~7% after cooperation with an agglomerator. The electric field voltage and agglomerator voltage affect the collection efficiency. With the agglomerator voltage rising from ？16 k V to ？40 k V, the efficiency of overall system increased from 99.76% to 99.96%. With the electric field area voltage rising from 25 k V to 65 k V, the efficiencies of overall system, electric field area, and grade collection of fine particles were increased from 99.813% to 99.971%, 21.73% to 70.17%, and 20%~30% to 55%~65%, respectively.