多孔介质滤料的颗粒床除尘效率试验研究  

Experimental Study on Filtration Efficiency of Granular Bed with Porous Media as Filter Material

作　　者：王苗[1] 秦颂 刘庚林 贾谦 WANG Miao;QIN Song;LIU Genglin;JIA Qian(Department of Mechanical Engineering,Xi’an Jiaotong University City College,Xi’an 710018,China;Engineering Research Center of Robot and Intelligent Manufacturing,Universities of Shaanxi Province,Xi’an 710018,China)

机构地区：[1]西安交通大学城市学院机械工程系,西安710018 [2]机器人与智能制造陕西省高校工程研究中心,西安710018

出　　处：《实验室研究与探索》2023年第12期53-57,169,共6页Research and Exploration In Laboratory

基　　金：科技部创新方法工作专项(2019IM010203)。

摘　　要：为了研究不同操作条件下以多孔介质为滤料的颗粒床除尘效率变化规律,考虑床层空隙率和滤料表面粉尘沉积的变化以及二次夹带现象,推导非稳态除尘效率的数学模型。研制了以多孔介质为滤料的颗粒床试验台,由粉尘加料装置、空气供应装置、颗粒床过滤器和检测装置组成。在不同表观气速、滤料厚度、滤料粒径和粉尘进料浓度下,对颗粒床过滤器除尘效率数学模型和试验台进行了验证。结果表明,试验范围内数学模型计算值与试验值吻合较好。In order to study the variation of granular bed filter filtration efficiency using porous media as filter material under different operating conditions,the changes in bed porosity,dust deposition on the surface of the filter material,and secondary entrainment phenomenon are considered,and a mathematical model for non-stationary dust removal efficiency is derived.A granular bed filter test bench with porous media as filter material is developed,consisting of a dust feeding device,an air supply device,a granular bed filter device,and a detection device.The calculation model and test bench for dust removal efficiency of particle bed filters are validated under different apparent gas velocity,filter thickness,filter size and dust feed concentration.The results indicate that within the experimental range,the calculated values of the mathematical model are in good agreement with the experimental values.

关 键 词：颗粒床过滤器 半焦 除尘效率 试验系统 

分 类 号：TQ530[化学工程—煤化学工程]