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Received September 13, 2012
Accepted September 27, 2012
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Computational fluid dynamics simulation of multiphase flow in packed sieve tray of distillation column
CAPE Center, School of Chemical Engineering, Iran University of Science & Technology, Narmak, Tehran 1684613114, Iran 1Computational Fluid Dynamics Research Laboratory, School of Chemical Engineering, Iran University of Science and Technology, Narmak, Tehran 1684613114, Iran 2Petroleum Refining Division, Research Institute of Petroleum Industry, Tehran 1485733111, Iran
capepub@cape.iust.ac.ir
Korean Journal of Chemical Engineering, March 2013, 30(3), 563-573(11), 10.1007/s11814-012-0166-1
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Abstract
Computational fluid dynamic models (CFD) have been used for the description of hydraulic characteristics of packed sieve tray (PST). PST is a conventional sieve tray combined with a slice thickness of packing on the tray deck. Eulerian-Eulerian framework has been used to solve the equations of both liquid and gas phases assumed as two interpenetrating phases. A commercial scaled sieve tray has been simulated based on a three-dimensional unsteady state model. Comparison with experimental data proves good agreement for the simulation results under the studied conditions. Effects of the packing on the liquid velocity distribution, clear liquid height and vertical liquid volume fraction distribution have been investigated. The simulation results show that 3.08 cm of packing thickness could increase the clear liquid height up to 17 percent and froth height up to 10 percent as well as promoting froth density by 6 percent with the only drawback of increasing wet pressure drop up to 16 percent in froth regime.
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References
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Liu CJ, Yuan XG, Yu KT, Zhu XJ, Chem. Eng. Sci., 55(12), 2287 (2000)
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Alizadehdakhel A, Rahimi M, Alsairafi AA, Korean J. Chem. Eng., 26(2), 475 (2009)
Li XG, Liu DX, Xu SM, Li H, Chem. Eng. Process., 48(1), 145 (2009)
Olujic Z, Jodecke M, Shilkin A, Schuch G, Kaibel B, Chem. Eng. Process., 48(6), 1089 (2009)
Rahimi R, Abbaspour D, Chem. Eng. Process., 47(9-10), 1504 (2008)
Yin F, Liquid maldistribution and mass transfer efficiency in randomly packed distillation column, Ph. Thesis, University of Alberta (1999)
Kister HZ, Distillation Design, McGraw-Hill, New York (1992)
Yin FH, Wang ZC, Afacan A, Nandakumar K, Chuang KT, Can. J. Chem. Eng., 78(3), 449 (2000)
Lockett MJ, Distillation tray fundamental, Cambridge University Press, Cambridge (1968)
Solari B, Bell RL, AIChE J., 32, 640 (1986)
Kachur JP, Afacan A, Chuang KT, Chem. Eng. Res. Des., 82(7), 813 (2004)
