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An investigation on the Effect of Continuous Phase Height on the First and Second Critical Rotor Speeds in a Rotary Disc Contactor
Abstract:A Rotary Disc Contactor with inner diameter of 9.1cm and maximum operating height of 40cm has been used to investigate break up phenomenon. Water-Toluene, Water as continuous phase and Toluene as dispersed phase, was selected as chemical system in the experiments. The mentioned chemical system has high interfacial tension so it was possible to form big drops which permit accurate investigation on break up phenomenon as well as the first and second critical rotor speeds. In this study, Break up phenomenon has been studied as a function of mother drop size, rotor speed and continuous phase height. Further more; the effects of mother drop size and continuous phase height on the first and second critical rotor speeds were investigated. Finally, two modified correlations were proposed to estimate the first and second critical speeds.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1059591Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1149
 Drumm, C. and Bart, H. J., Hydrodynamics in a RDC extractor: single and two-phase PIV measurements and CFD simulations, Chem. Eng. Technol, 29, 11, 1297-1302, 2006.
 Kamath, M. S. and Subba Rau, M.G., Prediction of operating range of rotor speeds for rotary disc contactors, The Canadian journal of chemical engineering, 63, 578-584, 1985.
 Laddha, G.S. and Degaleesan, T.E., Transport Phenomena in Liquid- Liquid Extraction, McGraw Hill, New York, 1976.
 Joaquim J.C., Apar─▒'cio, Manuel A.S. Jero'nim, Fernando G. Martins, Manuel A.N. Coelho, Carlos Martins, Artur S. Braga, Carlos A.V. Costa, Two different approaches for RDC modelling when simulating a solvent deasphalting plant, Computers and chemical engineering, 26, 1369- 1377, 2002.
 Moreira, E., Pimenta, L. M., Carneiro, L. L., Faria R. C. L., Mansour, M. B., Hydrodynamic Behavior of a Rotating Disc Contactor Under Low Agitation Conditions, Chem. Eng. Comm, 192, 1017-1035, 2005.
 Kung, E. Y. and Beckmann, R. B., Transport Phenomena in Liquid- Liquid Extraction, Tata-McGraw Hill Publishing Co., New-Delhi, 1976.
 Kannappan, R., Hydrodynamics and mass transport in rotary disc contactors, Ph.D thesis, University of Madres, 1973.
 Khadivparsi, P, Simulation of rotary disc contactors for industrial and semi industrial processes,. MSc thesis, University of Tehran, 1993.
 Bahmanyar, H. and Slater, M. J., Studies of drop break up in liquidliquid systems in a rotary disc contactor, part I: conditions of no mass transfer, Chemical engineering technology, 14, 79-89, 1991.
 Tong, J. and Furusaki, S., Mean drop size and size distribution in rotating disc contactor use for reversed micellar extraction of proteins, Journal of chemical engineering of Japan, 28, 5, 582-589, 1995.