DOI QR코드

DOI QR Code

CFD Simulation of Air-particle Flow for Predicting the Collection Efficiency of a Cyclone Separator in Mud Handling System

Mud handling system 내 cyclone separator의 집진효율 추정을 위한 공기-분체의 CFD 시뮬레이션

  • Jeon, Gyu-Mok (Department of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Park, Jong-Chun (Department of Naval Architecture and Ocean Engineering, Pusan National University)
  • 전규목 (부산대학교 조선해양공학과) ;
  • 박종천 (부산대학교 조선해양공학과)
  • Received : 2018.12.12
  • Accepted : 2019.02.22
  • Published : 2019.02.28

Abstract

Drilling mud was used once in the step of separating the gas and powder they were transported to a surge tank. At that time, the fine powder, such as dust that is not separated from the gas, is included in the gas that was separated from the mud. The fine particles of the powder are collected to increase the density of the powder and prevent air pollution. To remove particles from air or another gas, a cyclone-type separator generally can be used with the principles of vortex separation without using a filter system. In this study, we conducted numerical simulations of air-particle flow consisting of two components in a cyclone separator in a mud handling system to investigate the characteristics of turbulent vortical flow and to evaluate the collection efficiency using the commercial software, STAR-CCM+. First, the single-phase air flow was simulated and validated through the comparison with experiments (Boysan et al., 1983) and other CFD simulation results (Slack et al., 2000). Then, based on one-way coupling simulation for air and powder particles, the multi-phase flow was simulated, and the collection efficiency for various sizes of particles was compared with the experimental and theoretical results.

Keywords

Cyclone separator;Collection efficiency;Air-particle flow;Computational fluid dynamics;One-way coupling

Acknowledgement

Supported by : 부산대학교

References

  1. Barth, W., 1956. Design and Layout of the Cyclone Separator on the Basis of New Investigation. Brennstoff-Warme-Kraft, 8, 1-9.
  2. Bernardo, S., Mori, M., Peres, A.P., Dionisio, R.P., 2006. 3-D Computational Fluid Dynamics for Gas and Gas-particle Flows in a Cyclone with Different Inlet Section Angles. Powder Technology, 162(3), 190-200. https://doi.org/10.1016/j.powtec.2005.11.007 https://doi.org/10.1016/j.powtec.2005.11.007
  3. Boysan, F., Ewan, B.C.R., Swithenbank, J., Ayers, W.H., 1983. Experimental and Theoretical Studies of Cyclone Separator Aerodynamics. IChemE Symposium Series, 69, 305-320.
  4. Cooper, C.D., Alley, F.C., 1994. Air Pollution Control; A Design Approach. Prospect Heights, Ill, Waveland Press, Inc.
  5. Dias, D.B., Mori, M., Martignoni, W.P., 2009. Boundary Condition Effects in CFD Cyclone Simulations. 8th World Congress of Chemical Engineering (WCCE8), Montreal.
  6. Dietz, P.W., 1981. Cyclone Collection Efficiency : Collection Efficiency of Cyclone Separators. AIChE Journal, 27(6), 888-892. https://doi.org/10.1002/aic.690270603 https://doi.org/10.1002/aic.690270603
  7. Dirgo, J., Leith, D., 1985. Cyclone Collection Efficiency: Comparison Experimental Results with Theoretical Predictions. Aerosol Sciences and Technology, 4(4), 401-415. https://doi.org/10.1080/02786828508959066 https://doi.org/10.1080/02786828508959066
  8. Elsayed, K., 2011. Analysis and Optimization of Cyclone Separators Geometry Using RANS and LES. PhD Thesis, Vriji Universiteit Brussel.
  9. Elsayed, K., Lacor, C., 2013. CFD Modeling and Multi-objective Optimization of Cyclone Geometry Using Desirability Function, Artificial Neural Networks and Genetic Algorithms. Applied Mathematical Modelling, 37(8), 5680-5704. https://doi.org/10.1016/j.apm.2012.11.010 https://doi.org/10.1016/j.apm.2012.11.010
  10. Iozia, D.L., Leith, D., 1990. The Logistic Function and Cyclone Fractional Efficiency. Aerosol Science and Technology, 12(3), 598-606. https://doi.org/10.1080/02786829008959373 https://doi.org/10.1080/02786829008959373
  11. Lapple, C.E., 1951. Processes Use Many Collector Types. Chemical Engineering, 58(5), 144-151.
  12. Leith, D., Licht, W., 1972. The Collection Efficiency of Cyclone Type Particle Collectors: a New Theoretical Approach. AIChE Symposium Series, 68(126), 196-206.
  13. Li, E., Wang, Y., 1989. A New Collection Theory of Cyclone Separators. AIChE Journal, 35(4), 666-669. https://doi.org/10.1002/aic.690350419 https://doi.org/10.1002/aic.690350419
  14. Papoulias, D., Lo, S., 2015. Advances in CFD Modeling of Multiphase Flows in Cyclone Separators. Chemical Engineering Transactions, 43, 1603-1608.
  15. Slack, M.D., Prasad, R.O., Bakker, A., Boysan, F., 2000. Advances in Cyclone Modelling Using Unstructured Grids. Trans IChemE, 78(Part A), 1098-1104. https://doi.org/10.1205/026387600528373
  16. Wang, L., 2004. Theoretical Study of Cyclone Design. PhD Thesis, Texas A&M University.
  17. Xiang, R.B., Lee, K.W., 2005. Numerical Study of Flow Field in Cyclones of Different Height. Chemical Engineering and Processing: Process Intensification, 44(8), 877-883. https://doi.org/10.1016/j.cep.2004.09.006 https://doi.org/10.1016/j.cep.2004.09.006
  18. Yakhot, A., Orszag, S.A., Yakhot, V., Israeli, M., 1986. Renormalization Group Formulation of Large-Eddy Simulation. Journal of Scientific Computing, 4(2), 139-158. https://doi.org/10.1007/BF01061499