Effect of internally mounted helical fins on the separation performance of a cylindrical gas-solid cyclone separator

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2023-01-01 DOI:10.2298/tsci230527204f

Zeming Fu, Huagen Wu, Baohua Gao, Mengtao Liang, Guanghua Wu, Shuo Shang, Xin Zhang, Hongye Huang, Siwei Chen

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Abstract

In this study, an innovation was made by adding helical fins on the vortex finder of a cylindrical gas-solid cyclone separator, and the effect of this structural improvement on the separation performance was analyzed based on the flow field characteristics. The results show that both cyclones with and without helical fins exhibit a separation efficiency of almost 100 % for particles larger than 5 ?m. As the inlet velocity increases, the effect of adding helical fins on the overall separation efficiency decreases, with a relative deviation of only 0.16 % at an inlet velocity of 27 m/s, while it becomes increasingly effective in reducing energy consumption, with a pressure drop of 25.33 %. The mechanism of the overall performance improvement lies in the fact that the helical fins change the flow field distribution in the cyclone, where the turbulence intensity in the vortex finder is significantly reduced, the tangential velocity of the external vortex is decreased, and the pressure gradient is reduced. The purpose of this paper is to provide new ideas for the optimal design of the internal components of the cyclone separator.

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内装螺旋翅片对圆柱形气固旋风分离器分离性能的影响

本研究通过在圆柱形气固旋风分离器的涡流探测器上增加螺旋翅片进行了创新，并结合流场特性分析了这种结构改进对分离性能的影响。结果表明，带和不带螺旋翅片的旋风分离器对大于5 μ m的颗粒的分离效率均接近100%。随着进口速度的增加，增加螺旋翼对整体分离效率的影响减小，在进口速度为27 m/s时，相对偏差仅为0.16%，而降低能耗的效果越来越明显，压力降为25.33%。整体性能提升的机理在于螺旋翼改变了旋风器内的流场分布，其中涡流探测器内的湍流强度显著降低，外涡切向速度降低，压力梯度减小。本文旨在为旋风分离器内部部件的优化设计提供新的思路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.