CFD gas-liquid simulation of oriented valve tray

doi:10.1016/j.cjche.2015.06.020

Abstract

Abstract: Computational fluid dynamics (CFD) has recentlyemerged as an effective tool for the investigation of the hydraulic parameters and efficiency of tray towers. The computation domain was established for two types of oriented valves within a tray and meshed into two parts with different grid types and sizes. The volume fraction correlation concerning inter-phase momentum transfer source was fitted based on experimental data, and built in UDF for simulation. The flow pattern of oriented valve tray under different operating conditionswas simulated under Eulerian-Eulerian framework with realizable k-ε model. The predicted liquid height from CFD simulation was in good agreement with the results of pressure drop and volume fraction correlations. Meanwhile, the velocity distribution and volume fraction of the two phases were demonstrated and analyzed, which are useful in design and analysis of the column trays.

Key words: CFD simulation, Oriented valve tray, Gas-liquid flow, Volume fraction correlation

摘要： Computational fluid dynamics (CFD) has recentlyemerged as an effective tool for the investigation of the hydraulic parameters and efficiency of tray towers. The computation domain was established for two types of oriented valves within a tray and meshed into two parts with different grid types and sizes. The volume fraction correlation concerning inter-phase momentum transfer source was fitted based on experimental data, and built in UDF for simulation. The flow pattern of oriented valve tray under different operating conditionswas simulated under Eulerian-Eulerian framework with realizable k-ε model. The predicted liquid height from CFD simulation was in good agreement with the results of pressure drop and volume fraction correlations. Meanwhile, the velocity distribution and volume fraction of the two phases were demonstrated and analyzed, which are useful in design and analysis of the column trays.

关键词: CFD simulation, Oriented valve tray, Gas-liquid flow, Volume fraction correlation

Yufeng Ma, Lijun Ji, Jiexu Zhang, Kui Chen, BinWu, YanyangWu, Jiawen Zhu. CFD gas-liquid simulation of oriented valve tray[J]. Chin.J.Chem.Eng., 2015, 23(10): 1603-1609.

Yufeng Ma, Lijun Ji, Jiexu Zhang, Kui Chen, BinWu, YanyangWu, Jiawen Zhu. CFD gas-liquid simulation of oriented valve tray[J]. Chinese Journal of Chemical Engineering, 2015, 23(10): 1603-1609.

References

[1] P. Zhao, X.L. Lu, J.X. Zhang, Y.A. Li, Operating character and industrial using of directed valve type tray (DVTT), Chem. Ind. Eng. Prog. 21 (z1) (2002) 231-234 (in Chinese).

[2] W.X. Liu, G.Z. Song, N.D. Jin, M.Z. Liu, Fluid analysis of gas-liquid two-phase flow based on semiconductor laser measurement and S transform, International Conference on Computer and Information Application (ICCIA), China, 2010.

[3] C.J. Liu, X.G. Yuan, K.T. Yu, X.J. Zhu, A fluid-dynamic model for flow pattern on a distillation tray, Chem. Eng. Sci. 55 (12) (2000) 2287-2294.

[4] S. Suzanne, Computational fluid dynamics — power to the people, Chem. Eng. Prog. 103 (4) (2007) 10-13.

[5] S.A. Tabatabaei, N. Mahinpey, E. Esmaili, C.J. Lim, CFD simulation of flow regime maps in a slot-rectangular spouted bed, Can. J. Chem. Eng. 91 (11) (2013) 1856-1864.

[6] Y. Aldali, T. Muneer, D. Henderson, Solar absorber tube analysis: thermal simulation using CFD, Int. J. Low Carbon Technol. 8 (1) (2013) 14-19.

[7] A.P. Laleh, W.Y. Svrcek, W.D. Monnery, Design and CFD studies of multiphase separators—a review, Can. J. Chem. Eng. 90 (6) (2012) 1547-1561.

[8] X.L. Wang, C.J. Liu, X.G. Yuan, K.T. Yu, Computational fluid dynamics simulation of three-dimensional liquid flow and mass transfer on distillation column trays, Ind. Eng. Chem. Res. 43 (10) (2004) 2556-2567.

[9] D.X. Liu, X.G. Li, S.M. Xu, Improving liquid flow on distillation tray with CFD, Chem. Ind. Eng. Prog. 25 (12) (2006) 1499-1504 (in Chinese).

[10] B.W. Chen, A.W. Zeng, The CFD simulation of liquid back mixing in structures packing column, Chem. Ind. Eng. 21 (5) (2004) 313-317 (in Chinese).

[11] H.J. Jin, G. Cao, H.G. Wu, X.X. Wang, Researches on the numerical simulation and improved design of gas distributors, Chem. Eng. Mach. 36 (1) (2009) 29-31 (in Chinese).

[12] D.X. Liu, X.G. Li, S.M. Xu, Y.L. Qi, Computational fluid dynamics simulations on twophase flow field of gas distributor in packing column, Chem. Eng. 36 (7) (2008) 24-27.

[13] S. Roshdi, N. Kasiri, S.H. Hashemabadi, J. Ivakpour, Computational fluid dynamics simulation of multiphase flow in packed sieve tray of distillation column, Korean J. Chem. Eng. 30 (3) (2013) 563-573.

[14] S. Hirschberg, E.F.Wijn, M.Wehrli, Simulation the two phase flow on column trays, Chem. Eng. Des. 83 (A12) (2005) 1410-1424.

[15] M.K. Silva, M.A. Davila, M. Mori, Study of the interfacial forces and turbulence models in a bubble column, Comput. Chem. Eng. 44 (2012) 34-44.

[16] S. Jiang, H. Gao, J.S. Sun, Y.H.Wang, L.N. Zhang, Modeling fixed triangular valve tray hydraulics using computational fluid dynamics, Chem. Eng. Process. Process Intensif. 52 (2012) 74-84.

[17] A. Seokolichin, G. Eigenberber, Gas-liquid flow in bubble columns and loop reactors: part I. Detailed modeling and numerical simulation, Chem. Eng. Sci. 49 (24B) (1994) 5735-5746.

[18] M. Volker, H. Dietmar, Liquid flow and phase holdup-measurement and CFD modeling for two- and three-phase bubble columns, Chem. Eng. 57 (11) (2002) 1899-1908.

[19] D. Pfleger, S. Gomes, N. Gilbert, H.G. Wanger, Hydrodynamic simulations of laboratory scale bubble columns fundamental studies of the Eulerian-Eulerian modeling approach, Chem. Eng. Sci. 54 (21) (1999) 5091-5099.

[20] S.M.Monahan, V.S. Vitankar, R.O. Fox, CFD predictions for flow-regime transitions in bubble columns, AICHE J. 51 (7) (2005) 1897-1923.

[21] Y. Pan, M.P. Dudukovic, M. Chang, Dynamic simulation of bubbly flow in bubble columns, Chem. Eng. Sci. 54 (13) (1999) 2481-2489.

[22] R. Krishna, J.M. Van Baten, J. Ellenberger, A.P. Higler, R. Talor, CFD simulation of sieve tray hydrodynamics, Chem. Eng. Res. Des. 77 (7) (1999) 639-646.

[23] C.J. Colwell, Clear liquid height and froth density on sieve trays, Ind. Eng. Chem. Process. Des. Dev. 20 (2) (1981) 298-307.

[24] D.L. Bennett, R. Agrawal, P.J. Cook, New pressure drop correlation for sieve tray distillation columns, AICHE J. 29 (3) (1983) 434-442.

[25] T. Zarei, R. Rahimi, M. Zivdar, Computational fluid dynamic simulation of MVG tray hydraulics, Korean J. Chem. Eng. 26 (5) (2009) 1213-1219.

[26] S. Jiang, Experimental Study and Numerical Simulation of a Novel Fixed Valve Tray(Master Thesis) Tianjin Univ., China, 2012.

[27] J.B. Chen, C.J. Liu, X.G. Yuan, G.C. Yu, CFD simulation of flow and mass transfer in structured packing distillation columns, Chin. J. Chem. Eng. 17 (2009) 381-388.

[28] P. Zhao, Y.M. Zhao, D.L. Xiong, Q.X. Zhang, Tray efficiency of composed directed valve tray, Chem. Eng. 38 (7) (2010) 14-17 (in Chinese).

[29] X.G. Li, D.X. Liu, S.M. Xu, H. Li, CFD simulation of hydrodynamics of valve tray, Chem. Eng. Process. Process Intensif. 48 (1) (2009) 145-151.

[30] D. Noriler, H.F. Meier, A.A.C. Barros, M.R. Wolf Maciel, Thermal fluid dynamics analysis of gas-liquid flow on a distillation sieve tray, Chem. Eng. J. 136 (2-3) (2008) 133-143.

[31] R. Safa, A.S. Goharrizi, CFD simulation of an industrial hydrocyclone with Eulerian—Eulerian approach: a case study, Int. J. Min. Sci. Technol. 24 (5) (2014) 643-648.

[32] J.X. Zhang, The Experiment Study of New Type Directed Valve Tray(Master Thesis) ECUST, China, 1998.

[33] Y. Zhu, D.L. Xiong, Q.X. Zhang, Research on pressure drop of the combined wave guided valve trays, Chem. Ind. Eng. Prog. 26 (S1) (2007) 43-48 (in Chinese).

[34] R. Krishna, J.M. Van Baten,Modeling sieve tray hydraulics using computational fluid dynamics, Chem. Eng. Res. Des. 81 (1) (2003) 27-38.

[35] Q.S. Li, L. Li, M. Zhang, Z.G. Lei, Modeling flow-guided sieve tray hydraulics using computational fluid dynamics, Ind. Eng. Chem. Res. 53 (11) (2014) 4480-4488.

[36] Y.Wang, S. Du, H.G. Zhu, H.X. Ma, S.Q. Zuo, CFD simulation of hydraulics of dividing wall sieve trays, Adv. Mater. Res. 476-478 (2012) 1345-1350.