新型流化除雾器除雾性能实验研究  

Experimental study on performances of the mist eliminator with fluidized pellets

作　　者：张成刚 陈旺生[1,2] 朱能天 涂阳哲 韩军 Zhang Chenggang;Chen Wangsheng;Zhu Nengtian;Tu Yangzhe;Han Jun(College of Resource and Environmental Engineerings Wuhan University of Science and Technology,Wuhan 430081,Hubei;Industrial Safety Engineering Technology Research Center of Hubei Province,Wuhan 430081,Hubei)

机构地区：[1]武汉科技大学资源与环境工程学院,湖北武汉430081 [2]湖北省工业安全工程技术研究中心,湖北武汉430081

出　　处：《烧结球团》2020年第1期67-72,共6页Sintering and Pelletizing

基　　金：国家自然科学基金资助项目(51476118)。

摘　　要：针对目前除雾器存在的除雾效率不高、易堵塞、成本高等问题,提出一种新型的流化除雾器,其具有高效、低阻、防堵塞等优点。探讨了流化除雾器的除雾原理,并研究了流化除雾器的除雾性能及其影响因素。结果表明:流化除雾器除雾机理主要为惯性碰撞、拦截;除雾器阻力随着流化风速、除雾介质堆积厚度和表观密度的增大而增大,当除雾介质粒径为30 mm,堆积厚度为16 cm,进口雾滴质量浓度为90 g/m^3,流化风速由5.7 m/s增大至7.5 m/s时,排放质量浓度由4.17 mg/m^3增大至41.94 mg/m^3,除雾效率均高达99.95%以上,阻力均在210 Pa左右,表明流化除雾器具有良好的除雾性能,且由于除雾介质处于流化状态,因此可有效防止除雾器堵塞。Aiming at such problems as low efficiency,easy blockage and high cost,a new type of mist eliminator with fluidized pellets is proposed,which has such advantages as high efficiency,low resistance and anti-blockage.The mechanism of the mist eliminator with fluidized pellets is analyzed,its performance and influencing factors are experimentally studied.The results show that the main mechanism of the mist eliminator with fluidized pellets is inertial collision and interception.The resistance of mist eliminator increases with the rise of fluidization velocity,stacking thickness and apparent density of the mist eliminating medium.When the diameter of the medium is 30 mm,and thickness is 16 cm,the mass concentration of imported droplet is 90 g/m^3.When the fluidization velocity increases from 5.7 m/s to 7.5 m/s,the emission mass concentration increases from 4.17 mg/m^3 to 41.94 mg/m^3,the eliminating efficiency reaches 99.95% and resistance is about 210 Pa.The results show that the mist eliminator has good performance and can effectively prevent the mist eliminator from blocking because the pellets are in the fluidized state.

关 键 词：除雾器 除雾机理 除雾效率 排放质量浓度 阻力 

分 类 号：X703.3[环境科学与工程—环境工程]