Mass Transfer Models for Oxygen-Water Co-Current Flow in Vertical Bubble Columns
- Authors: Valdemar Garcia1, João Sobrinho Teixeira2
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View Affiliations Hide Affiliations1 Instituto Politécnico de Bragança, Escola Superior de Tecnologia e de Gestão, Quinta de Santa Apolónia, 5300-999 Bragança, Portugal 2 Instituto Politécnico de Bragança, Escola Superior Agrária, Quinta de Santa Apolónia, 5301-857 Bragança, Portugal
- Source: Single and Two-Phase Flows on Chemical and Biomedical Engineering , pp 386-411
- Publication Date: July 2012
- Language: English
Mass Transfer Models for Oxygen-Water Co-Current Flow in Vertical Bubble Columns, Page 1 of 1
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The present work reports a theoretical and experimental study of mass transfer for oxygen-water co-current flow in vertical bubble columns. The axial dispersion of liquid phase was also studied. Experiments were carried out in a 32 mm internal diameter and 5.35 and 5.37 m height columns. The superficial liquid velocity ranged from 0.3 to 0.8 m/s and volumetric flow rate ratio of gas to liquid ranged from 0.015 to 0.25. Mathematical models were developed to predict concentration of gas dissolved in the liquid as function of different physical and dynamic variables for two-phase cocurrent downflow and upflow. We obtained for the ratio of the liquid side mass transfer coefficient to initial bubbles radius, kL/r0=0.12 s-1.
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