Abstract
Recently mixing technology is important to chemical engineering, food engineering, bio engineering and etc.. However, mechanism of emulsification has not been fully understood. In this study, breakup processes of oil droplets in water were visualized to clarify the emulsification mechanism using an emulsifying equipment with homogenizing mixer. The effect of flow generated by a rotating impeller on atomization was investigated. When kinds of the impeller were varied, it was measured that size of oil droplets in water were atomized and a PIV technique was used to evaluate the flow field around the discharge opening of the casing. The experimental result showed that there were three different kinds of break up processes of oil droplets in the vicinity of the impeller. In addition, it was understood that as revolution of the impeller increase or emulsification time pass, Median diameter(d_<50>) of oil droplets in water became reduced in size. Additionally, it was observed that the area of the fast flow around the discharge opening of the casing was slanted to rotating direction.
Published Version
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