复合湿式除尘器雾化吸附区除尘性能的研究  

Study on Dust Removal Performance of Composite Wet Dust Collector in Atomization Adsorption Zone

作　　者：段松江 虞斌[1] 江超 尚宇勋 DUAN Song-jiang;YU Bin;JIANG Chao;SHANG Yu-xun(School of Mechanical and Power Engineering,Nanjing Tech University)

机构地区：[1]南京工业大学机械与动力工程学院

出　　处：《化工机械》2025年第2期261-267,共7页Chemical Engineering & Machinery

摘　　要：以复合湿式除尘器的核心除尘区——雾化吸附区为研究对象,采用欧拉-拉格朗日法进行气-液-固三相流数值模拟,研究工作参数对除尘效率的影响规律。结果表明:导流板在雾化吸附区内可促使产生多个大小不同的涡流,能有效增加粉尘与液滴的接触时间和在导流板间的停留时间,增加了粉尘颗粒被导流板及壁面碰撞捕集的概率,在加入喷淋液滴后,除尘效率得到显著提升;当导流板角度为15°,导流板层数为6层,含尘气流流速为6 m/s时,除尘效率最高;粒径为1.0μm的颗粒除尘效率大于85%;粒径在2.5μm及以上的颗粒除尘效率都大于95%;颗粒粒径增至10.0μm及以上时,除尘效率接近于100%;喷嘴压力对除尘效率的提升作用并不显著。The atomization adsorption zone,a core dust removal zone of the composite wet dust collector,was taken as the object of study and the Euler-Lagrangian method was adopted to simulate gas-liquid-solid flow and investigate working parameters’effect on the dust removal efficiency.The results show that,the deflector can promote the generation of multiple eddies of different sizes in the atomization adsorption zone,which can increase the contact between the dust and liquid droplets and the residence time between the deflector plates,and also increase the probability of dust particles being trapped by the collision between the deflector plate and the wall,and the dust removal efficiency can be significantly improved after the addition of spray droplets;when the angle of the deflector is 15°,the number of deflector layers is 6 layers,and the flow rate of dust-containing air is 6 m/s,the dust removal efficiency becomes the highest;and the dust removal efficiency of particles with a particle size of 1.0μm is greater than 85%.The dust removal efficiency of particles with particle size of 2.5μm and above is greater than 95%;and when the particle size are increased to 10.0μm and above,the dust removal efficiency closes to 100%,and the change of nozzle pressure has no significant effect on the improvement of dust removal efficiency.

关 键 词：复合湿式除尘器 雾化吸附区 气-液-固三相流 导流板 除尘效率 数值模拟 

分 类 号：TQ086.1[化学工程]