Effect of inlet volute wrap angle on the flow field and performance of double inlet gas cyclones--颗粒学报PARTICUOLOGY

Wang, Z., Sun, G., Song, Z., Yuan, S., & Qian, Z. (2023). Effect of inlet volute wrap angle on the flow field and performance of double inlet gas cyclones. Particuology, 77, 29-36. https://doi.org/10.1016/j.partic.2022.08.006

Effect of inlet volute wrap angle on the flow field and performance of double inlet gas cyclones

Zetao Wang ^a, Guogang Sun ^{a b *}, Zhengyuan Song ^a, Shiwei Yuan ^a, Zhen Qian ^a

a College of Mechanical and Transportation Engineering, China University of Petroleum, Beijing, 102249, China
b State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing, 102249, China

10.1016/j.partic.2022.08.006

Volume 77, June 2023, Pages 29-36

Received 3 May 2022, Revised 3 August 2022, Accepted 4 August 2022, Available online 20 August 2022, Version of Record 2 December 2022.

E-mail: ggsunbj@163.com

Highlights

• Symmetrical double inlet cannot always improve the efficiency.

• The 0° and 90° DI can increase the efficiency, while the 180° DI does the opposite.

• The 0° and 90° DI can increase the pressure drop, the 180° DI does the opposite.

• The large-scale cyclone was studied, which is more suitable for industrial.

Abstract

In response to the divergent understanding of double inlet cyclone performance in the literature, the effect of inlet volute wrap angle on the performance and flow field of double inlet cyclone separator was studied by Computational Fluid Dynamic (CFD) method. The results showed that the inlet volute wrap angle can affect the comparison results of the single and double inlet gas cyclones with the same total inlet cross-sectional area and velocity. 0° and 90° volute double inlet improved the efficiency mainly by separating particles below 10 μm, while 180° volute double inlet had no separation advantage for any particles, so the symmetrical double inlet does not always improve the efficiency, and the appropriate inlet volute wrap angle should be selected according to the actual situation, otherwise, the expected performance requirements of the symmetrical double inlet cyclone cannot be achieved. Compared with the flow field, it is found that the inlet volute wrap angle changed the tangential velocity of the symmetrical double inlet cyclone separator, thus changing the performance.

Graphical abstract

Keywords

Cyclone separator; Inlet volute wrap angle; Efficiency; Pressure drop; Double inlet

文章导读