Enhancement of liquid-liquid micromixing performance in curved capillary microreactor by generation of Dean vortices

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外文摘要：Micromixing efficiency is an important parameter for evaluating the multiphase mass transfer perfor-mance and reaction efficiency of microreactors.In this work,the novel curved capillary reactor with different shapes was designed to generate Dean flow,which was used to enhance the liquid-liquid micromixing performance.The Villermaux-Dushman probe reaction was employed to characterize the micromixing performance in different curved capillary microreactors.The effects of experiment param-eters such as liquid flow rate,inner diameter,tube length,and curve diameter on micromixing perfor-mance were systematically investigated.Under the optimal conditions,the minimum value of the segmentation factor Xs was 0.008.It was worth noting that at the low Reynolds number(Re＜30),the change of curved shape on the capillary microreactor can significantly improve the micromixing perfor-mance with Xs reduced by 37.5％.Further,the correlations of segment index Xs with dimensionless factor such as Reynolds number or Dean number were developed,which can be used to predict the liquid-liquid micromixing performance in capillary microreactors.

外文关键词：

MicroreactorProcess intensificationMicromixing performanceDean flow

作者：

Shaoyun Wu、Zhuang Ma、Zichi Yang、Suying Zhao、Caijin Zhou、Huidong Zheng

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作者单位：

Fujian Engineering Research Center of Advanced Manufacturing Technology for Fine Chemicals,College of Chemical Engineering,Fuzhou University,Fuzhou 350108,China

Qingyuan Innovation Laboratory,Quanzhou,362114,China

基金：

National Natural Science Foundation of ChinaOutstanding Talent Introduction Funds from Fuzhou UniversityFuzhou University Testing Fund of precious apparatus

项目编号：

223080570040-5111752023T003

出版年：

2024

DOI：

10.1016/j.cjche.2023.12.012

中国化学工程学报(英文版)

中国化工学会

中国化学工程学报(英文版)

CSTPCDEI

影响因子：0.818

ISSN：1004-9541

年,卷(期)：2024.68(4)

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