Effect of continuous-phase viscosity on the drop sizes of liquid-liquid dispersions in agitated vessels

Michael Stamatoudis, Lawrence L Tavlarides

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Abstract

The effect of continuous-phase viscosity on the drop sizes of liquid-liquid dispersions in agitated vessels operated batchwise was experimentally examined. The systems studied were kerosene dispersed in aqueous glycerol (3.6 cP < μc < 223.1 cP) and mineral oil dispersed in aqueous glycerol (3.5 cP < μc < 122.6 cP) for impeller Reynolds numbers ranging from 358 to 23 467. Photomicrographic study indicates that the effect of continuous-phase viscosity on the drop size distribution is most pronounced for systems of high dispersed-phase viscosities. A logarithmic plot of the Sauter mean diameter as a function of the impeller speed is a straight line, the slope of which varies with the continuous-phase viscosity. The slope increases, reaches a maximum, and then decreases with increasing continuous-phase viscosity.

Original languageEnglish (US)
Pages (from-to)1175-1181
Number of pages7
JournalIndustrial and Engineering Chemistry Process Design and Development
Volume24
Issue number4
StatePublished - 1985

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ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Engineering(all)
  • Environmental Science(all)
  • Polymers and Plastics

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