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  • 刘培坤,王鹤,杨兴华,张悦刊,姜兰越,杨振国.球柱形旋风除尘器分离性能数值模拟与实验[J].环境工程学报,2019,13(9):2189-2197.DOI:10.12030/j.cjee.201811161    [点击复制]
  • LIU Peikun,WANG He,YANG Xinghua,ZHANG Yuekan,JIANG Lanyue,YANG Zhenguo.Numerical simulation and experimental research on separation performance of spherical column cyclone separator[J].,2019,13(9):2189-2197.DOI:10.12030/j.cjee.201811161   [点击复制]
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球柱形旋风除尘器分离性能数值模拟与实验
刘培坤, 王鹤, 杨兴华, 张悦刊, 姜兰越, 杨振国
0
(山东科技大学机械电子工程学院,青岛 266590)
摘要:
针对传统柱锥形旋风除尘器存在细颗粒分离效率低的问题,提出了一种新型球柱形旋风除尘器。采用数值模拟和实验研究手段,分析了柱段高度对球柱形旋风除尘器分离特性的影响。模拟结果表明:当球柱形旋风除尘器柱段高度不为零时,随着柱段高度的增加,静压力逐渐变小;球柱形旋风除尘器内流体的切向速度均呈“M”型分布;流体轴向速度随着半径的减小,其绝对值先增大后减小,在中心轴线处又开始增大;流体径向速度均关于中心轴线对称。实验结果表明,当球柱形旋风除尘器柱段高度为150 mm时,总分离效率最高,可达到92.01%。研究结果可为旋风除尘器中细小颗粒分离应用提供指导,对提高5 μm以下颗粒分离效率具有重要意义。
关键词:  球柱形旋风除尘器  分离性能  数值模拟  流场特性
DOI:10.12030/j.cjee.201811161
投稿时间:2018-11-27
基金项目:国家重点研发计划资助项目(2018YFC0604702);山东省自然科学基金资助项目(ZR2016EEM37);山东省重点研发计划项目(2017GSF216004)
Numerical simulation and experimental research on separation performance of spherical column cyclone separator
LIU Peikun, WANG He, YANG Xinghua, ZHANG Yuekan, JIANG Lanyue, YANG Zhenguo
(College of Mechanical and Electrical Engineering, Shandong University of Science and Technology, Qingdao 266590, China)
Abstract:
In order to solve the problem of low separation efficiency for fine particles when using traditional cyclone separator, this study proposed a new type of spherical column cyclone separator. The influence of column height on the separation characteristics of spherical column cyclone separator was studied by numerical simulation and experimental test. The simulated results show that the static pressure decreased with the increase of the column height that was not equal to zero. The tangential velocity of the fluid in this separator presented a characteristic of “M” type distribution. The axial velocity of the fluid firstly increased and then decreased with the decrease of radius, and it increased again near the central aixs. The radial velocity of the fluid is symmetric about the central axis. Further experimental test results show that, considering the combined effects of pressure drop and separation efficiency, the separation efficiency reached the highest value of 92.01% at the column height of 150 mm in spherical column cyclone separator. The research results can provide guidance for application of tiny particle separation in cyclone separator and have important significance for improving particle separation efficiency below 5 μm.
Key words:  spherical column cyclone separator  separation performance  numerical simulation  flow field characteristics