The concave-wall jet characteristics in vertical cylinder separator with inlet baffle component

doi:10.1016/j.cjche.2021.05.023

中国化学工程学报 ›› 2022, Vol. 42 ›› Issue (2): 178-189.DOI: 10.1016/j.cjche.2021.05.023

The concave-wall jet characteristics in vertical cylinder separator with inlet baffle component

Jing Zhang^1,2, Zhongyi Ge¹, Wei Wang¹, Bin Gong¹, Yaxia Li¹, Jianhua Wu^1,2

1. New Chemical Technology Transfer and Promotion Center of Liaoning Province, Shenyang University of Chemical Technology, Shenyang 110142, China;
2. School of Chemical Engineering & Technology, Tianjin University, Tianjin 300350, China

收稿日期:2020-04-08 修回日期:2021-04-04 出版日期:2022-02-28 发布日期:2022-03-30
通讯作者: Jianhua Wu,E-mail:syhgdx_wjh@163.com
基金资助:
This work was supported by the National Natural Science Foundations of China (51506133); Natural Science Foundation of Liaoning Province of China (2019ZD0078, 2019MS259); and Key projects of Liaoning Province education department of China (LZ2019001).

The concave-wall jet characteristics in vertical cylinder separator with inlet baffle component

Jing Zhang^1,2, Zhongyi Ge¹, Wei Wang¹, Bin Gong¹, Yaxia Li¹, Jianhua Wu^1,2

1. New Chemical Technology Transfer and Promotion Center of Liaoning Province, Shenyang University of Chemical Technology, Shenyang 110142, China;
2. School of Chemical Engineering & Technology, Tianjin University, Tianjin 300350, China

Received:2020-04-08 Revised:2021-04-04 Online:2022-02-28 Published:2022-03-30
Contact: Jianhua Wu,E-mail:syhgdx_wjh@163.com
Supported by:
This work was supported by the National Natural Science Foundations of China (51506133); Natural Science Foundation of Liaoning Province of China (2019ZD0078, 2019MS259); and Key projects of Liaoning Province education department of China (LZ2019001).

摘要/Abstract

摘要： The concave-wall jet was formed in the vertical cylinder separator with inlet baffle component. The effect of curvature of radial baffle on the jet flow in the separator was investigated by the experiment of concentration and the numerical simulation of species transport. The results show that the concave-wall jet was confined within the narrow region near the concave-wall and the flow disturbance in the center of separator was weakened. The distribution of concentration and the flow region of wall jet depended on the curvature of radial baffle (K). Compared with the turbulent intensity of the plate baffle (K=0), that of concave baffle (K=2) reduced by 6.1% and the turbulent intensity of convex baffle (K=-2) increased by 13.5%. The best flow stability was obtained by the concave baffle because the baffle outlet was similar to convergent nozzle. The outlet convergent angle was between 0° and 19.5° when 0 ≤ K ≤ 2. The secondary vortices were caused by the tangential velocity irregularity on the cross-section of two axial baffles in the separator with convex baffle. The baffle with K ≥ 0 was more suitable in separator inlet than that with K < 0.

关键词: Concave-wall jet, Baffle component, Curvature, Concentration, Numerical simulation

Abstract: The concave-wall jet was formed in the vertical cylinder separator with inlet baffle component. The effect of curvature of radial baffle on the jet flow in the separator was investigated by the experiment of concentration and the numerical simulation of species transport. The results show that the concave-wall jet was confined within the narrow region near the concave-wall and the flow disturbance in the center of separator was weakened. The distribution of concentration and the flow region of wall jet depended on the curvature of radial baffle (K). Compared with the turbulent intensity of the plate baffle (K=0), that of concave baffle (K=2) reduced by 6.1% and the turbulent intensity of convex baffle (K=-2) increased by 13.5%. The best flow stability was obtained by the concave baffle because the baffle outlet was similar to convergent nozzle. The outlet convergent angle was between 0° and 19.5° when 0 ≤ K ≤ 2. The secondary vortices were caused by the tangential velocity irregularity on the cross-section of two axial baffles in the separator with convex baffle. The baffle with K ≥ 0 was more suitable in separator inlet than that with K < 0.

Key words: Concave-wall jet, Baffle component, Curvature, Concentration, Numerical simulation

Jing Zhang, Zhongyi Ge, Wei Wang, Bin Gong, Yaxia Li, Jianhua Wu. The concave-wall jet characteristics in vertical cylinder separator with inlet baffle component[J]. 中国化学工程学报, 2022, 42(2): 178-189.

Jing Zhang, Zhongyi Ge, Wei Wang, Bin Gong, Yaxia Li, Jianhua Wu. The concave-wall jet characteristics in vertical cylinder separator with inlet baffle component[J]. Chinese Journal of Chemical Engineering, 2022, 42(2): 178-189.

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The concave-wall jet characteristics in vertical cylinder separator with inlet baffle component

The concave-wall jet characteristics in vertical cylinder separator with inlet baffle component

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