Experimental study of hydrodynamic characteristics of improved sieve tray with push valves

Document Type: Full article

Authors

Department of Mechanical Engineering, University of Hormozgan, Bandar Abbas, Iran

Abstract

This paper addresses an experimental investigation in the hydrodynamic behavior of a modified slotted sieve tray. Slotted sieve tray (Push valve sieve tray) is a sieve tray that the push valves have been utilized on the tray deck to eliminate liquid gradients and non-uniformity of liquid distribution on the tray. The air-water system was used in an industrial scale experimental rig with an internal diameter of 1.2 m. The dry pressure drop, total pressure drop, weeping and entrainment of the modified slotted sieve tray were measured and compared with the conventional sieve tray. Weeping and pressure drop data for the tray was correlated. Results show the better hydrodynamic behavior of the modified push valve sieve tray than a conventional sieve tray. This modification can be an effective and inexpensive way to debottleneck sieve tray columns, because it has good characteristic of sieve tray and eliminate the disadvantage of sieve tray by increasing the operating window of the tray.

Keywords

Main Subjects


[1]   Olujic, Z., Jodecke, M., Shilkin, A., Schuch, G. and Kaibel, B., “Equipment improvement trends in distillation”, Chem. Eng. and Proc., 48(6), 1089 (2009).

[2]   De Bruyn, G., Gangriwala, H. A. and Nye, J. O., “High capacity Nye(R) trays”, Institution of Chemical Engineers Symposium Series, 1 (128), pp. A509-A517 (1992).

[3]   Kunesh, J. G., Kister, H. Z., Lockett, M. J. and Fair, J. R., “Distillation: Still towering over other options”, Chem. Eng. Prog., 91(10), 43 (1995).

[4]   Bravo, J. L. and Kusters, K. A., “Tray technology for the new millennium”, Chem. Eng. Prog., 96(12), 33 (2000).

[5]   Burcher, N., Wikstrom, E., Mosca, G., Hausman, A. and Wilkinson, P., “De-Butanizer revamp at PreemRaff”, Proceedings of Topical Distillation Conference, AIChE, pp. 189-204 (2007).

[6]   Summers, D. R., Bernard, A. and Villiers, W. E. D., “High capacity tray revamp of a C2 splitter”, Proceedings of Topical Distillation Conference, AIChE, pp. 189-204 (2007).

[7]   Penciak, J., Nieuwoudt, I. and Spencer, G., “High-performance trays: Getting the best capacity and efficiency”, IChemE Symp., 152, pp. 311-316 (2006).

[8]    Wilkinson, P., Vos, E., Konijn, G., Kooijman, H., Mosca, G. and Tonon, L., “Distillation trays that operate beyond the limits of gravity by using centrifugal separation”, Chem. Eng. Res. and Des., 85(1), 130 (2007).

[9]   Fair, J. R., Trutna, W. R. and Seibert, A.F., “A new, ultracapacity tray for distillation columns”, Chem. Eng. Res. and Des., 77(7), 619 (1999).

[10]           Trutna, W. R., “Method and apparatus for producting co-current fluid contact”, U.S. Pat. 5695548, (1997).

[11] Xu, Z. P. and Bielinski, D. H., “Apparatus for cocurrent fractional distillation”, U.S. Pat. 6682633B1, (2004).

[12] Xu, P., Nowak, B. and Richardson, K., “SimulFlow device capacity beyond system limit”, AIChE Meeting, Spring, (2007).

[13]           Maleky-dozzadeh, M., Khadiv-Parsi, P., Rezazadeh, Sh., Firoozian, N., Sadraei, A. and Amouei Torkmahalleh, M., “Application of multistage steam distillation column for extraction of essential oil of Valeriana officinialis L. cultivated in Iran”, Iranian J. of Chem. Eng., 10(4), 79 (2013).

[14] Zarei, T., Rahimi, R., Zarei, A. and Zivdar, M., “Hydrodynamic characteristic of Conical Cap tray: Experimental studies on dry and total pressure drop, weeping and entrainment”, Chem. Eng. and Proc.: Process Intensification, 64, 17 (2013).

[15] Naziri, N., Zadghaffari, R. and Naziri, H., “A study on chimney type centrifugaltray lower operating limit”, APCBEE  Procedia, 3, 182 (2012).

[16]           Quan, Y., Mosca, G. and Roza, M. “Characteristics of trays using inertial separation technology”, Chin. J. of Chem. Eng., 18(6), 954 (2010).

[17]           Ping, Z., Dan, J., Huibo, M. and Jianhua, W., “Three-dimensional simulation of liquid flow on a sieve tray under different inclinations”, Braz. J. of Chem. Eng., 31, 905 (2014).

[18] Belincanta, J., Ravagnani, T. M. K. and Pereira, J. A. F., “Hydrodynamic and tray efficiency behavior in parastillation column”, Braz. J. of Chem. Eng., 23, 135 (2006).

[19] Ma, Y., Ji, L., Zhang, J., Chen, K., Wu, B., Wu, Y. and Zhu, J., “CFD gas-liquid simulation of oriented valve tray”, Chin. J. Chem. Eng., 23(10), 1603 (2015).

[20] Zhang, L., Liu, X., Li, X., Gao, X., Sui, H., Zhang, J., Yang, Z., Tian, C. and Li, H., “A novel SiC foam valve tray for distillation columns”, Chin. J. Chem. Eng., 21(8), 821 (2013).

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

[22]           Nutter, D. E., “High capacity tray for gas-liquid contact apparatus”, U.S. Pat. US5360583A, (1994).

[23]           Nutter, D. E., “The MVG(TM) tray at FRI”, Chem. Eng. Res. and Des., 77(6), 493 (1999).

[24]           Sun, J., Luo, X., Jiang, S., Wang, W., Lyu, H., Wang, P., and Gao, H., “Computational fluid dynamics hydrodynamic analysis of a cross-orthogonal fixed-valve tray”, Chem. Eng. Technol., 37, 383 (2014).

[25]           Qian, J., Qi, R. and Zhu, S., “High-powered adaptive valve tray: A new generation tray offers new advantages”, Chem. Eng. Res. Des., 84(2 A), 155 (2006).

[26]           Li, Q., Zhang, M., Tang, X., Li, L. and Lei, Z., “Flow-guided sieve-valve tray (FGS-VT) - A novel tray with improved efficiency and hydrodynamics”, Chem. Eng. Res. and Des., 91(6), 970 (2013).

[27]           Brahem, R., Royon-Lebeaud, A. and Legendre, D., “Effect of path length on valve tray columns: Experimental study”, Chem. Eng. Science, 126, 517 (2015).

[28]           Brahem, R., Royon-Lebeaud, A. and Legendre, D., “Experimental hydrodynamic study of valve trays”, Chem. Eng. Science, 100, 23 (2013).

[29]           Kister, H. Z., Distillation design, McGraw-Hill, New York, (1992).

[30]           Williams, B., Island, G. and Yendall, E., “Apparatus for liquid-gas contacting tray”, U.S. Pat. 3417975, (1968).

[31]           Kirkpatrick, R. D. and Weiler, D. W., “Liquid-gas contacting tray”, U.S. Pat. 4101610, (1978).

[32]           Pilling, M., Fischer, M. and Mosca, G., “Tray apparatus, column with same and method of  assembling and using”, U.S. Pat. US 2007/0040289 A1, (2007).

[33]           Pilling, M., Summers, D. and Fischer, M., “The use of directional momentum devices fractionation trays”, IChemE Symposium, pp. 317-326 (2006).

[34]           Kirkpatrick, R. D. and Weiler, D. W., “Liquid-gas contacting tray”, U.S. Patent, US 4101610, (1978).

[35]           Rahimi, R., Zarei, A., Zarei, T., Naziri Firoozsalari, H. and Zivdar, M., “A computational fluid dynamics and an experimental approach  to the effects of push valves on sieve trays”, In: 50th Distillation & Absorption Conference, Netherlands, p. 407 (2010).

[36]           Hu, X., Fan, L. T., Yuan, X. G., Yu, K. T., Zeng, A. W. and Kalbassi, M. A., “Model-based approach to predict and control hydraulic gradient on slotted sieve trays”, Industrial & Engineering Chemistry Research, 53(12), 4940 (2014).

[37]           Lockett, M. J. and Banik, S., “Weeping from sieve trays”, Ind. & Eng. Chemistry Process Des. and Dev., 25(2), 561 (1986).

[38]           Kister, H. Z., Larson, K. and Madsen, P., “Vapor cross flow channeling on sieve trays: Facts or myth”, Chem. Eng. Prog., 88, 86 (1992).

[39]           Mohan, T., Rao, K. K. and Prahiada Rao, D., “Effect of vapor maldistribution on tray efficiency”, Ind. Eng. Chem. Process. Des. Dev., 22 (3), 376 (1983).