The effect of scale and interfacial tension on liquid-liquid dispersion in in-line Silverson rotor-stator mixers

It was found that for all three scales, power draw is the sum of the rotor and flow contributions, with proportionality constants, PoZ and k1, that are practically scale independent. Sauter mean drop size appeared to correlate better with tip speed than energy dissipation rate. For ethanol/water solutions, mean drop size correlated well with Weber number based on interfacial tension, but for surfactant solutions effective interfacial tension gave better correlations with Weber number.