Study of Drop Size Distribution in RTL Contactor
Main Article Content
Abstract
The present work studied the drop size distribution in the RTL contactor using two liquid-liquid systems, xylene-acetone-water and kerosene-acetone-water. Process variables studied were: rpm (10-50 min-1), continuous phase flow rate (4-12 l/h), dispersed phase flow rate (4-12 l/h), and concentration (0.1-0.5 mole/l). It was found that Sauter mean drop diameter (d32) decreased with increasing rpm and continuous phase flow rate, and decreasing dispersed phase flow rate and concentration. An empirical correlation, with a correlation coefficient equal to (92.6%), relating d32 with process variables was developed having the form:
Article Details
Section
How to Cite
References
Al-Hemiri, A.A.A., and Kareem, A., (1990) "Drop size distribution in a Graesser contactor", Can. J. Chem. Eng., 68, 569.
Alves, S.S., C.I. Maia, J.M.T. Vasconcelos, and A.J. Serralheiro, (2002)"Bubble size in aerated stirred tanks", Chem. Eng. J., 89, 109.
Benitez, J., (2002)"Principles and modern applications of mass transfer operations", John Wiley &Sons, Inc., New York,.
Blazej, L., M. Vajda, and S. Bafrncova, (1978) Chem. Zvesti, 32, 314, [cited by Kumar and Hartland 1986].
Bratsun, D.A., and De Wit, H., (2004)"On Marangoni convective patterns driven by exothermic chemical reaction in two layer systems", Physics of fluids, 16, 1082
Coulaloglou, C.A., and Tavlarides, L.L., (1976)"Drop size distribution and coalescence frequencies of liquid-liquid dispersions in flow vessels", AICHE.J., 22, 289.
Fischer, A., (1971) Verfahrenstechnik, 5, 360, [cited by Kumar and Hartland 1986].
Fischer, A., Ph.D. thesis, ETH Zurich, (1973) [cited by Kumar and Hartland 1986].
Hartland, S., (1970)"Counter-current extraction", Pergamon press Ltd., Oxford.
Hartung, J., and Weiss, S., (1982) Chem. Tech. (Leipzig), 34, 300, [cited by Kumar and Hartland 1986].
Hinze, J.O., (1955)"Fundamentals of hydrodynamic mechanism of splitting in dispersion processes", AICHE.J., 1, 289.
Jeffreys, G.V., K.K.M. Al-Aswad, C. Mumford, (1981)"Drop size distribution and dispersed phase holdup in a large rotating disc contactor", Separation science and Technology, 16, 1217.
Kagan, S.Z., et al., J. (1964)Appl. Chem. USSR, 37, 67, [cited by Kumar and Hartland 1986].
Kolb, P., and Bart, H., (2002)"Liquid-liquid miniplant extractor- A novel tool for process design", International solvent extraction Conference, South Africa.
Kumar, A., and Hartland, S., (1986)"Prediction of drop sizes in rotating disc extractors", Cand. J. Chem. Eng., 64, 915.
Lage, P.L.C., (1999)"Conservation of bubble size distribution during gas reactive absorption in bubble column reactors", Braz. J. Chem. Eng., 16, 290.
Lovick, J., et al., (2005)"Drop size distribution in highly concentrated liquid-liquid dispersions using a light back scattering method", J. Chem. Technol. Biotech., in press, 0268-2575/ .
Magiera, J., B. Tal, J. Zadlo, (1976)"Hydrodynamic and kinetic problems of mass transfer in rotating disc extraction column", Int. Chem. Eng., 16, 744.
Magiera, J., and Zadlo, J., (1977) Inz. Chem., 7, 127, [cited by Kumar and Hartland 1986].
Mar, R., G. Husung, and F. Moser, (1978) Verfahrenstechnik, 12, 139, [cited by Kumar and Hartland 1986].
Martinez, C.B., J.L. Montanes, and J.C. Lasheras, (1999)"On the breakup of an air bubble injected into a fully developed turbulent flow", J. Fluid Mech., 401, 157.
Mersmann, A., (1980) Chem. Ing. Tech., 52, 933, [cited by Kumar and Hartland 1986].
Mouza, A.A., G.K. Dalakoglou, and S.V. Paras, (2005)"Effect of liquid properties on the performance of bubble column reactors with fine pore spargers", Chem. Eng. Sci., 60, 1465.
Mugele, R.A., and Evans, H.D., (1951)"Droplet size distribution in sprays", Ind. Eng. Chem., 43, 1317.
Mumford, C.J., and Al-Hemiri, A.A.A., (1974)"The effect of wetting characteristic upon the performance of rotating disc contactor", Proc. Int. solvent Extr. Conf., society of chemical industry, London, Vol. 2, 1591.
Olney, R.B., (1964)"Droplet characteristic in a counter-current contactor", AICHE. J., 10, 827.
Rodger, W.A., et al., (1956)Chem. Eng. Progr., 52, 515, [cited by Shinnar and Church 1960]
Shinnar, R., and Church, J.M., (1960)"Prediction particle size in agitated dispersions", Ind. Eng. Chem., 52, 255.
Spathe, W., and Weiss, S., (1972) Leuna-Mersburg, 14, 66, [cited by Kumar and Hartland 1986].
Strand, C.P., R.B. Olney, and G.H. Ackerman, (1962)"Fundamental aspects of rotating disc contactor performance", AICHE.J., 8, 252.
Tech, L., H.I. Malcolm, and C. Hanson, (1983)"Handbook of solvent extraction", John Wiley &Sons, New York.
Treybal, R.E., (1981)"Mass transfer operations", 2nd ed., McGraw-Hill book Comp., New York.