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

IF 1.1 4区工程技术 Q4 THERMODYNAMICS

Thermal Science 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

Thermal Science 工程技术-热力学

CiteScore

2.70

自引率

29.40%

发文量

399

审稿时长

5 months

期刊介绍： The main aims of Thermal Science to publish papers giving results of the fundamental and applied research in different, but closely connected fields: fluid mechanics (mainly turbulent flows), heat transfer, mass transfer, combustion and chemical processes in single, and specifically in multi-phase and multi-component flows in high-temperature chemically reacting flows processes present in thermal engineering, energy generating or consuming equipment, process and chemical engineering equipment and devices, ecological engineering, The important characteristic of the journal is the orientation to the fundamental results of the investigations of different physical and chemical processes, always jointly present in real conditions, and their mutual influence. To publish papers written by experts from different fields: mechanical engineering, chemical engineering, fluid dynamics, thermodynamics and related fields. To inform international scientific community about the recent, and most prominent fundamental results achieved in the South-East European region, and particularly in Serbia, and - vice versa - to inform the scientific community from South-East European Region about recent fundamental and applied scientific achievements in developed countries, serving as a basis for technology development. To achieve international standards of the published papers, by the engagement of experts from different countries in the International Advisory board.