Enhancement of gas-liquid mass transfer and mixing in zigzag microreactor under ultrasonic oscillation
Enhancement of gas-liquid mass transfer and mixing in zigzag microreactor under ultrasonic oscillation
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超声振荡下锯齿形微反应器内气液传质与混合的强化
DOI：
10.1016/j.ces.2021.117094
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发表时间：
2022-01
影响因子：
4.7
通讯作者：
Guangwen Chen
中科院分区：
文献类型：
--
作者：
LixiaYang;Feishi Xu;Guangwen Chen
超声振荡可以有效地强化微反应器内的气液传质。本工作旨在揭示锯齿形超声微反应器中的气液传质强化机理。对泰勒气泡在直形和锯齿形USMR内流动过程中液塞内O2的传质性能和混合效率进行了严格的定量比较。Z字形几何结构和超声振荡的协同作用可使传质强化倍数从1.88提高到3.80。然而，这种协同效应不会对增强因子为0.91~1.03的液塞内的混合效率产生显著影响。气液传质性能的协同强化效应不能简单地看作是Z字形几何形状和超声振荡的单独贡献相加。建立了预测锯齿形USMR内总传质系数的半经验方程。
Ultrasonic oscillation can be leveraged to efficiently intensify the gas-liquid mass transfer in microreactors. This work aims at revealing the gas-liquid mass transfer enhancement mechanism in zigzag ultrasonic microreactors (zigzag USMRs). A rigorous and quantitative comparison of the O2mass transfer performance and mixing efficiency inside the liquid slug during the Taylor bubbles flowing within the straight and zigzag USMRs was made. The synergetic effect of zigzag geometry and ultrasonic oscillation can enhance the mass transfer by an enhancement factor from 1.88 to 3.80. However, this synergetic effect would not have a significant impact on the mixing efficiency inside the liquid slug with an enhancement factor from 0.91 to 1.03. The synergetic enhancement effect of gas-liquid mass transfer performances could not be regarded as simply adding up the separate contribution of zigzag geometry and ultrasonic oscillation. Semi-empirical equations were established to predict the overall mass transfer coefficient in zigzag USMRs.
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影响因子：
8.6
作者：
Yaran Yin;Rongwei Guo;Chunying Zhu;Taotao Fu;Youguang Ma
通讯作者：
Youguang Ma
DOI：
--
发表时间：
2017-03
期刊：
--
影响因子：
--
作者：
Lixia Yang
通讯作者：
Lixia Yang
微反应器中超声辅助气液传质过程：表面活性剂、通道尺寸和超声频率的影响
影响因子：
15.1
作者：
Zhang Qiang;Dong Zhengya;Zhao Shuainan;Liu Zhikai;Chen Guangwen
通讯作者：
Chen Guangwen
影响因子：
0.4
作者：
A. I. Stankiewicz
通讯作者：
A. I. Stankiewicz
影响因子：
4.2
作者：
Hossain, Shakhawat;Fuwad, Ahmed;Kim, Sun Min
通讯作者：
Kim, Sun Min