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Experimental study on drop breakup time and breakup rate with drop swarm in a stirred tank
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  • Han Zhou,
  • Xiong Yu,
  • Bo Wang,
  • Shan Jing,
  • Wenjie Lan,
  • Shaowei Li
Han Zhou
Tsinghua University
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Xiong Yu
Tsinghua University Institute of Nuclear and New Energy Technology
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Bo Wang
Tsinghua University
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Shan Jing
Tsinghua University
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Wenjie Lan
China University of Petroleum (Beijing)
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Shaowei Li
Institute of Nuclear and New Energy Technology
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Peer review status:IN REVISION

02 Apr 2020Submitted to AIChE Journal
05 Apr 2020Assigned to Editor
05 Apr 2020Submission Checks Completed
28 Apr 2020Reviewer(s) Assigned
01 Jun 2020Editorial Decision: Revise Major
11 Jul 20201st Revision Received

Abstract

Drop breakup experiments were carried out in a stirred tank using the high-speed online camera. Breakup behaviors of drop breakup time, multiple breakage, and breakup rate were investigated. Experimental results show that the drop breakup time is mainly controlled by the interfacial tension and drop diameter, while is almost independent of the rotating speed. Besides, the dispersed phase viscosity has a slight influence on the breakup time. An empirical correlation for the breakup time is proposed and is further verified by comparing with the results of Solsvik and Jakobsen (Chem. Eng. Sci., 2015, 131: 219-234). The percentage of multiple breakage comparing to binary breakup was statistically counted. The results indicated that the dimensionless drop diameter η = d / dmax can be adopted to characterize the proportion of binary breakup. Finally, the breakup rate was experimentally measured and the breakup probability was calculated using the inverse method.