The performance of an emulsion is determined by the average particle size and size distribution of the dispersed phase. Developing new methods for the continuous and controlled preparation of emulsions is of considerable interest. Industrial emulsification processes usually involve mixing the dispersed phase and continuous phase in an intermittent manner, which results in high energy consumption and unstable properties of the product. In this work, an ultra-high-speed rotating packed bed (UHS-RPB) has been used for the first time to prepare an emulsion continuously. The influence of the operating parameters and packing specifications on the particle size and size distribution in the emulsion has been investigated. It was found that the above operating conditions had a significant effect on the particle size and particle size distribution of the dispersed phase. An emulsion with an average droplet size of 12 μm was obtained under the optimal operating conditions of rotational speed of 9 000 r/min, emulsifier concentration of 4.2%, oil flow rate of 15 L/h, and 3D printing packing in a UHS-RPB. A mathematical model for predicting the particle size of the dispersed phase was established. This study provides a new route for the continuous, controllable and low cost preparation of emulsions.
XIE Jing
,
SHANG RuSong
,
CHU GuangWen
,
SUN BaoChang
,
CHEN JianFeng
. Continuous emulsification in an ultra-high-speed rotating packed bed[J]. Journal of Beijing University of Chemical Technology, 2022
, 49(1)
: 11
-16
.
DOI: 10.13543/j.bhxbzr.2022.01.002
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