CFD and experimental investigations on the micromixing performance of single countercurrent-flow microchannel reactor

Kunpeng Cheng; Chunyu Liu; Tianyu Guo; Lixiong Wen

doi:10.1016/j.cjche.2018.11.026

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CFD and experimental investigations on the micromixing performance of single countercurrent-flow microchannel reactor

Updated：2026-01-06

- CFD and experimental investigations on the micromixing performance of single countercurrent-flow microchannel reactor
- Chinese Journal of Chemical Engineering Vol. 27, Issue 5, Pages: 1079-1088(2019)
- 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：
- Funds：
- DOI：10.1016/j.cjche.2018.11.026
  CLC：
- Published：2019
- Accepted：
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Kunpeng Cheng, Chunyu Liu, Tianyu Guo, Lixiong Wen. CFD and experimental investigations on the micromixing performance of single countercurrent-flow microchannel reactor[J]. Chinese Journal of Chemical Engineering, 2019, 27(5): 1079-1088.
DOI：

Kunpeng Cheng, Chunyu Liu, Tianyu Guo, Lixiong Wen. CFD and experimental investigations on the micromixing performance of single countercurrent-flow microchannel reactor[J]. Chinese Journal of Chemical Engineering, 2019, 27(5): 1079-1088. DOI： 10.1016/j.cjche.2018.11.026.

摘要

Abstract

Microchannel reactors are widely used in different fields due to their intensive micromixing and

thus

high masstransfer efficiency. In this work

a single countercurrent-flow microchannel reactor (S-CFMCR) at the size of~1 mm was developed by steel micro-capillary and laser drilling technology. Utilizing the Villermaux/Dushman parallel competing reaction

numerical and experimental studies were carried out to investigate the micromixing performance (expressed as the segregation index

) of liquids inside S-CFMCR at the low flow velocity regime. The effects of various operating conditions and design parameters of S-CFMCR

e.g

inlet Reynolds number (

)

volumetric flow ratio (

)

inlet diameter (

) and outlet length (

)

on the quality of micromixing were studied qualitatively. It was found that the micromixing efficiency was enhanced with increasing

but weakened with the increase of

. Moreover

and

also have a significant influence on micromixing. CFD results were in good agreement with experimental data. In addition

the visualization of velocity magnitude

turbulent kinetic energy and concentration distributions of various ions inside S-CFMCR was illustrated as well. Based on the incorporation model

the estimated minimum micromixing time

of S-CFMCR is~2×10

-4

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