Prediction of the Contribution of Mass Transfer During Jet Formation in Liquid-Liquid Extraction Columns

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Taleshi, Navid | 2010

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 41184 (06)
University: Sharif University of Technology
Department: Chemical and Petroleum Engineering
Advisor(s): Sayf Kordi, Ali Akbar
Abstract:
There are many different opinions about the mass transfer contribution during jet formation in liquid - liquid extraction columns, and this could impact on their design. In this work, using experimental data obtained in two RDC columns and unpublished data of the jet mass transfer coefficients, mass transfer can be predicted during jet formation. The jet length and diameter were anticipated by using existing relations, and then the jet mass transfer coefficient was predicted, jet mass transfer rate and total column mass transfer rate were calculated and finally the contribution of mass transfer during jet formation in the column was predicted. Mass transfer contribution in the jet in various speeds and also in different Reynolds numbers, is mostly between 3 to 10 percent and its contribution in the overall rate of mass transfer will not be significant hence. It also can be seen that with increasing disc speed, the contribution of mass transfer during jet formation reduces. Liquid drop mass transfer coefficient in all Reynolds numbers and disk speeds is smaller than the corresponding jet mass transfer coefficient
Keywords:
Mass Transfer Coefficient ; Liquid-Liquid Extraction ; Liquid-Liquid Jet ; Rotating Disc Contactor

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