侧进气卧式滤筒除尘器结构改进的数值模拟  

Numerical simulation of structural improvement of side-intake horizontal filter cartridge dust collector

作　　者：张智雄 李彩亭[1,2] 李珊红[1,2] 张哲 黄乐 黄雅琴 ZHANG Zhixiong;LI Caiting;LI Shanhong;ZHANG Zhe;HUANG Le;HUANG Yaqin(College of Environmental Science and Engineering,Huanan University,Changsha 410082,China;Key Laboratory of Environmental Biology and Pollution Control,Huanan University,Changsha 410082,China)

机构地区：[1]湖南大学环境科学与工程学院,长沙410082 [2]湖南大学,环境生物与控制教育部重点实验室,长沙410082

出　　处：《环境工程学报》2021年第11期3581-3588,共8页Chinese Journal of Environmental Engineering

基　　金：国家重点研发计划课题(2016YFC0204100);湖南省重点研发计划课题(2018SK2032,2018SK2033)。

摘　　要：采用数值模拟方法研究了常规的侧进气卧式滤筒除尘器(A)内部流场紊乱情况。为优化除尘器气流组织,添加了导流板与3种在y方向投影面积相同的不同类型挡板。其中,挡板α为矩形,挡板β夹角呈140°,挡板γ夹角呈140°且为分离式,分别对应除尘器(B)、除尘器(C)、除尘器(D)。数值模拟结果表明:在优化后的除尘器中,入口风速为10 m·s^(-1)的情况下,安装分离式挡板γ的除尘器(D)内部气流组织最均匀,压降损失最小,滤筒间隙风速降至3.40 m·s^(-1),滤筒表面风速约为1.13~2.26 m·s^(-1),综合流量不均幅值为7.7%。本模拟研究结果可为卧式滤筒除尘器的结构优化提供参考。This study investigated the flow field disorder by studying the internal flow field of the conventional horizontal filter cartridge dust collector(A)with side intake via numerical simulation,it is found that there is a flow field disorder.To optimize the airflow organization of the dust collector,the guide plate and three different types of baffles with the same projection area in the y direction were added.The baffleαis rectangular,the baffleβangle is 140°,and the baffleγangle is 140°which it is a separate type,these correspond to the dust collector(B),dust collector(C)and dust collector(D)respectively.The results showed that among the optimized precipitators,when the inlet air speed was 10 m·s^(-1),the dust collector(D)installed with the separated baffleγhad the most uniform internal air distribution and the smallest pressure drop loss,in which the air speed of filter cartridge clearance was about 3.40 m·s^(-1),the surface wind speed of filter cartridge was about 1.13~2.26 m·s^(-1),and the uneven amplitude of the comprehensive flow was 7.7%.The simulation results could provide a reference basis for the structural optimization of the horizontal drum dust collector.

关 键 词：卧式滤筒除尘器 优化 数值模拟 气流组织 

分 类 号：X513[环境科学与工程—环境工程]