Theoretical prediction of the mass transfer coefficients in bubble columns operating in churn-turbulent flow regime. Study in Newtonian and non-Newtonian fluids under different operation conditions |
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| Authors: | E Alvarez J M Correa J M Navaza C Riverol |
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| Institution: | (1) Department of Chemical Engineering University of Vigo Vigo, Spain, ES;(2) Department of Chemical Engineering University of Santiago Santiago, Spain, ES;(3) Department of Chemical Engineering E.T.U.I.F., Campus Xunqueiras Pontevedra 36005, Spain, ES |
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| Abstract: | A comprehensive experimental study of the volumetric transfer coefficient k
L
a with Newtonian and non-Newtonian fluids in bubble columns using CO2 as gas phase is the objective of this work. The evaluation of the hydrodynamic characteristics of the bubble columns and
delineated the different hydrodynamic regimes considering column geometry, gas flow, liquid height and type of fluid (Newtonian
and non-Newtonian) suggest a general applicability of the proposed model. An explanation about of the k
L
a values in non-Newtonian fluid is offered take into account shear rate, column geometry, viscosity and results reported in
the literature previously.
Received on 31 July 1999 |
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