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International Journal of Chemical Engineering
Volume 2016, Article ID 3187631, 9 pages
Research Article

Numerical Simulation on Structure Optimization of Liquid-Gas Cylindrical Cyclone Separator

1State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an, China
2No. 5 Natural Gas Production Plant, PetroChina Changqing Oilfield Company, Inner Mongolia, China

Received 1 July 2016; Revised 16 August 2016; Accepted 22 August 2016

Academic Editor: Evangelos Tsotsas

Copyright © 2016 Peng Chang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


With the further development of oilfield, liquid-gas separation has become an essential problem. Cylindrical cyclone separators are popular in the industrial process due to the advantage that they are simple, compact, and inexpensive to manufacture. In this paper, a three-dimensional turbulence model including Reynolds stress model was established to describe the mixture flow field in the separator. Through the numerical simulation, the separation efficiency was investigated under different parameter cases such as separator length, gas phase outlet diameter, and inlet shape. It can be indicated from the simulation results that the separation efficiency decreases with the increase of the separator length, and the separation efficiency increases firstly and then decreases with the increase of the gas phase outlet diameter as well as the liquid phase outlet. Furthermore, the rectangular inlet is more suitable than the circular inlet with the separation efficiency changing from 66.45% to 79.04%. In the end, the optimal geometrical structure was presented with separation efficiency of 86.15%.