Controllable and high-throughput preparation of microdroplet using an ultra-high speed rotating packed bed

Jing Xie; Xiangbi Jia; Dan Wang; Yingjiao Li; Bao-Chang Sun; Yong Luo; Guang-Wen Chu; Jian-feng Chen

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Controllable and high-throughput preparation of microdroplet using an ultra-high speed rotating packed bed

Updated：2026-01-06

- Controllable and high-throughput preparation of microdroplet using an ultra-high speed rotating packed bed
- Chinese Journal of Chemical Engineering Vol. 48, Issue 8, Pages: 116-124(2022)
- Affiliations：
  
  1. State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology,Beijing,China,100029
  2. Research Center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology,Beijing,China,100029
- Author bio：
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- Published：2022
- Accepted：
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Jing Xie, Xiangbi Jia, Dan Wang, Yingjiao Li, Bao-chang Sun, Yong Luo, Guang-wen Chu, Jian-feng Chen. Controllable and high-throughput preparation of microdroplet using an ultra-high speed rotating packed bed[J]. Chinese Journal of Chemical Engineering, 2022, 48(8): 116-124.
DOI：

Jing Xie, Xiangbi Jia, Dan Wang, Yingjiao Li, Bao-chang Sun, Yong Luo, Guang-wen Chu, Jian-feng Chen. Controllable and high-throughput preparation of microdroplet using an ultra-high speed rotating packed bed[J]. Chinese Journal of Chemical Engineering, 2022, 48(8): 116-124. DOI：

摘要

Abstract

Microdroplets and their dispersion

with a large specific surface area and a short diffusion distance

have been applied in various unit operations and reaction processes. However

it is still a challenge to control the size and size distribution of microdroplets

especially for high-throughput generation. In this work

a novel ultra-high speed rotating packed bed (UHS-RPB) was invented

in which rotating foam packing with a speed of 4000–12000 r·min

provides microfluidic channels to disperse liquid into microdroplets with high throughput. Then generated microdroplets can be directly dispersed into a continuous falling film for obtaining a mixture of microdroplet dispersion. In this UHS-RPB

the effects of rotational speed

liquid initial velocity

liquid viscosity

liquid surface tension and packing pore size on the average size (

) and size distribution of microdroplets were systematically investigated. Results showed that the UHS-RPB could produce microdroplets with a

of 25–63?μm at a liquid flow rate of 1025 L·h

and the size distribution of the microdroplets accords well with Rosin–Rammler distribution model. In addition

a correlation was established for the prediction of

and the predicted

was in good agreement with the experimental data with a deviation within?±?15%. These results demonstrated that UHS-RPB could be a promising candidate for controllable prepa

ration of uniform microdroplets.

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