Dispersed-Phase Holdup and Characteristic Velocity in a Pulsed and Nonpulsed Disk-and-Doughnut Solvent Extraction Column
Yong Wang, Kathryn A Mumford, Kathryn H Smith, Zheng Li, Geoffrey W Stevens
Industrial & Engineering Chemistry Research | AMER CHEMICAL SOC | Published : 2016
The dispersed-phase holdup and characteristic velocity, which are important hydrodynamic performance parameters for solvent extraction columns, were measured and compared to literature correlations under pulsing and nonpulsing conditions using a 75 mm diameter disk-and-doughnut column. The results show that the dispersed-phase holdup increased with increasing dispersed-phase flow rate, while there was no noticeable change in holdup with the continuous-phase flow rate. With increasing pulsation intensity from zero, the dispersed-phase holdup decreased at first and then increased. A minimum holdup was found in the transition from the mixer-settler to the emulsion regime, and it increased with ..View full abstract
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Awarded by Australian Research Council
We acknowledge the funding provided by the Australian Research Council through Linkage Grant LP130100305 and BHP Billiton, Olympic Dam, for this project, and also thank the Particulate Fluids Processing Centre for the resources provided for this project.