Dispersion of silicone oil in water surfactant solution: Effect of impeller speed, oil viscosity and addition point on drop size distribution
作者： Amer EL-Hamouz , Mike Cooke , Adam Kowalski , Paul Sharratt
DOI: 10.1016/J.CEP.2008.07.008
关键词: Power number 、 Turbine 、 Impeller 、 Sawtooth wave 、 Pulmonary surfactant 、 Silicone oil 、 Aqueous solution 、 Drop (liquid) 、 Chromatography 、 Mechanics 、 Chemistry
摘要: Abstract The preparation of dilute aqueous silicone oil emulsions has been investigated with particular attention to the effect viscosity (0.49–350 mPa s), impeller selection (equal diameter Sawtooth and pitched blade turbines) method addition oil. Emulsification was found be sensitive how added vessel narrower drop size distributions smaller Sauter mean diameters, d 32 , obtained when injected into region. equilibrium values were also attained in a shorter time ∝ We −0.6 . For surface relationship weaker −0.4 group particularly useful describing behaviour particle sizes for different oils changes arising from process temperatures. An unexpected result is that impellor proved more energetically efficient at break-up producing droplets than Pitched Bade Turbine. This interesting since power number latter larger therefore equivalent operating conditions should produce sizes. suggest one possible reason local shear rates are larger. Another geometry provides points where high.
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