多孔介质布膜元件对水膜除尘器除尘性能的影响  

Influence of porous media membrane element on dust removal performance of water film dust collector

作　　者：郑雯婷 胡雨燕[1] 李志浩[1,2] Zheng Wenting;Hu Yuyan;Li Zhihao(Tongji University,Shanghai 200000,China;Wuxi Branch,China Telecom Co.,Ltd.,Wuxi 214000,China)

机构地区：[1]同济大学,上海200000 [2]中国电信股份有限公司无锡分公司,江苏无锡214000

出　　处：《能源与环保》2024年第10期34-39,46,共7页CHINA ENERGY AND ENVIRONMENTAL PROTECTION

基　　金：国家重点研发计划项目(2018YFD1100600)。

摘　　要：通过实验,研究了多孔介质布膜元件对水膜除尘器除尘效率的影响,讨论了进气量、用水量、气水比对除尘效率的作用效果。在此基础上,采用计算流体力学DPM模型,研究了进气量和颗粒粒径对除尘效率的影响。研究表明,在除尘实验中,采用多孔介质布膜元件可有效提高除尘效率,用水量越低,提高效果越明显;进气量和进水量对除尘效率具有显著的正向影响,但进气量的影响要大于进水量;不论是否存在多孔介质,除尘效率在气水比为21 m 3/kg达到最大值。模拟结果显示,在实验最大风量的条件下,对粒径94.55μm及以上的颗粒,具有100%的除尘效果;对于粒径68.58μm及以上的颗粒,能具有良好的除尘效率,数值可以在90%以上。The influence of porous media membrane element on the dust removal efficiency of water film dust collector was studied through experiments,and the effects of gas intake volume,water consumption and gas-water ratio on the dust removal efficiency were discussed.On this basis,the influences of gas flow rate and particle size on the dust removal efficiency were also investigated using the DPM model of computational fluid dynamics.The study shows that the use of porous media membrane element could effectively improve the dust removal efficiency,and the lower the water consumption,the more significant the improvement effect.Both gas intake volume and water intake volume have a significant positive effect on the dust removal efficiency.The effect of gas intake volume is greater than that of the water intake.Regardless of the presence or absence of porous media,the dust removal efficiency reaches its maximum value at the air-water ratio of 21 m 3/kg.The simulation results show that under the condition of maximum air flow in the experiment,it can achieve a 100% dust removal effect on particles of 94.55μm and above;for particles of 68.58μm and above,it can have good dust removal efficiency,with a value of over 90%.

关 键 词：水膜除尘器 DPM模型 多孔介质布膜元件 数值模拟 

分 类 号：TK223.27[动力工程及工程热物理—动力机械及工程]