Numerical Investigation on the Performance of Cyclone Separators
Corressponding author's email:
tinhtt@hcmute.edu.vnDOI:
https://doi.org/10.54644/jte.79.2023.1441Keywords:
Cyclone separator, Computational fluid dynamics, Discrete phase model, Collection efficiency, Pressure dropAbstract
Cyclone separators are commonly employed in the solid particle separation process due to their simplicity and low-cost manufacture. Collection efficiency and pressure drop are two of the most important factors. Small-size cyclone separator has outperformed collection efficiency. However, due to its small size, it’s hard to detailed flow investigation experimentally. So, the target of this work is to perform a numerical investigation of the flow characteristics as well as the collection efficiency and pressure drop of small cyclone separators, using Ansys Fluent software. Discrete Phase Model is included to simulate the particle-flow interaction. Different values of velocity inlet and particle size are considered. Typical flow characteristics of cyclone separators with a strong vortex are revealed. Results also show that the larger particle size or the stronger inlet velocity provides higher collection efficiency. Particularly, for a typical particle diameter of 2.96 micrometers, the collection efficiency of the cyclone separator is always higher than 91% when the inlet velocity surpasses 15 m/s. All these results provide a valuable framework for the operation of cyclone separators.
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References
J. Duan et al., “Study and optimization of flow field in a novel cyclone separator with inner cylinder,” Advanced Powder Technology, vol. 31, no. 10, pp. 4166-4179, 2020.
M. Azadi et al., “A CFD study of the effect of cyclone size on its performance parameters,” J. Hazardous Materials, vol. 182, pp. 835-841, 2010.
K. S. Lim et al., “Characteristics of the collection efficiency for a double inlet cyclone with clean air,” J. Aerosol Sci., vol. 34, pp. 1085-1095, 2003.
B. Zhao et al., “Development of a symmetrical spiral inlet to improve cyclone separator performance,” Power Technol., vol. 145, pp. 47-50, 2004.
T. C. Hsiao et al., “Effects of the geometry configuration on cyclone performance,” J. Aerosol Sci., vol. 86, pp. 1-12, 2015.
J. C. Kim and K. W. Lee, “Experimental study of particle collection by small cyclones,” Aerosol Sci. Technol., vol. 12, pp. 1003-1015, 1990.
R. Xiang et al., “Effects of cone dimension on cyclone performance,” J. Aerosol Sci., vol. 32, pp. 549-561, 2001.
P. A. Patterson and R. J. Munz, “Gas and particle flow patterns in cyclones at room and elevated temperatures,” Can. J. Chem. Eng., vol. 74, pp. 213-221, 1996.
Y. Zhu and K. W. Lee, “Experimental study on small cyclones operating at high flow rates,” J. Aerosol Sci., vol. 30, pp. 1303-1315, 1999.
T. G. Chual et al., “A CFD study of the effect of cone dimensions on sampling aerocyclones performance and hydrodynamics,” Powder Technol., vol. 162, pp. 126-132, 2006.
J. Gimbun et al., “The influence of temperature and inlet velocity on cyclone pressure drop: a CFD study,” Chem. Eng. Process, vol. 44, pp. 7-12, 2005.
J. J. Derksen et al., “Two-way coupled large-eddy simulations of the gas-solid flow in cyclone separators,” AIChE J., vol. 54, pp. 872-885.
S. K. Shukla et al., “Evaluation of numerical schemes using different simulation methods for the continuous phase modeling of cyclone separators,” Adv. Powder Technol., vol. 22, pp. 209-219, 2010.
S. K. Shukla et al., “The effect of modeling of velocity fluctuations on prediction of collection efficiency of cyclone separators,” Appl. Math. Model., vol. 37, pp. 5774-5789, 2013.
ANSYS Fluent Theory Guide, ANSYS Inc., 2019.
S. A. Morsi and A. J. Alexander, “An investigation of particle trajectories in two-phase flow systems,” J. Fluid Mech., vol. 55, pp. 193-208, 1972.
Z. Xiong et al., “Development of a cyclone separator with high efficiency and low pressure drop in axial inlet cyclones,” Powder Technol., vol. 253, pp. 644-649, 2014.
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