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International Symposium on Multiphase Flow and Transport Phenomena
November, 5-10, 2000, Antalya, Turkey

DOI: 10.1615/ICHMT.1997.IntSymLiqTwoPhaseFlowTranspPhen


ISBN Print: 1-56700-162-9

PHASE INVERSION OF STIRRED LIQUID-LIQUID DISPERSIONS

page 8
DOI: 10.1615/ICHMT.1997.IntSymLiqTwoPhaseFlowTranspPhen.520
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ABSTRACT

A study was made of phase inversion caused by adding more dispersed phase liquid into the stirred liquid-liquid (oil-water) dispersions. With increasing stirring speed for any oil systems, the volume fraction of dispersed phase at inversion from W/O to O/W dispersion decreased and reached a constant value. The inversion holdup from O/W to W/O dispersion was higher than that for the opposite inversion. On adding liquid paraffin into the oil phase, both holdups at W/O-to-O/W and O/W-to-W/O inversion increased in the case of cyclohexane and carbon tetrachloride systems, whereas for the kerosene system the W/O-to-O/W inversion holdup decreased but the opposite inversion holdup was constant. Strictly speaking it is difficult to think that the phase inversion characteristics is entirely interpreted in terms of physico-chemical properties such as viscosity, density, and interfacial tension.

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