| 水溶解CO2过程界面对流现象的PIV/LIF测量及传质系数预测 |
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| 引用本文： | 傅强,张会书,胡楠,袁希钢,余国琮.水溶解CO2过程界面对流现象的PIV/LIF测量及传质系数预测[J].化工学报,2018,69(2):586-594. |
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| 作者姓名： | 傅强 张会书 胡楠 袁希钢 余国琮 |
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| 作者单位： | 化学工程联合国家重点实验室, 天津大学化工学院, 天津 300072 |
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| 基金项目： | 国家自然科学基金项目（91434204）。 |
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| 摘 要： | 建立了用于观测水溶解CO2过程界面Rayleigh对流现象的粒子成像测速（PIV）和激光诱导荧光（LIF）技术联用方法，同时获得了该对流传质过程的液相速度场及浓度分布，定量观测了Rayleigh对流的发展过程。经界面对流发生条件下传质过程的分析，指出Rayleigh对流过程的涡量是影响传质过程的主要因素，给出了传质系数随涡量的变化关系和相应的关联式，进而为通过液相速度场的测量预测Rayleigh对流条件下的液相传质系数提供了一种有效的方法。
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| 关 键 词： | 界面 传质 二氧化碳 Rayleigh对流 激光诱导荧光 粒子成像测速 |
| 收稿时间： | 2017-08-02 |
| 修稿时间： | 2017-09-01 |
Simultaneous PIV/LIF measurements of interfacial convection during CO2 dissolution in water and prediction of mass transfer coefficient |
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| FU Qiang,ZHANG Huishu,HU Nan,YUAN Xigang,YU Kuotsung.Simultaneous PIV/LIF measurements of interfacial convection during CO2 dissolution in water and prediction of mass transfer coefficient[J].Journal of Chemical Industry and Engineering(China),2018,69(2):586-594. |
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| Authors: | FU Qiang ZHANG Huishu HU Nan YUAN Xigang YU Kuotsung |
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| Affiliation: | State Key Laboratory of Chemical Engineering, School of Engineering and Technology, Tianjin University, Tianjin 300072, China |
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| Abstract: | Liquid phase velocity fields and concentration distributions in an interfacial Rayleigh convection process during CO2 dissolution in water were simultaneously measured by combining particle image velocimetry (PIV) and laser induced fluorescence (LIF) technique. The evolution of Rayleigh convection was investigated quantitatively. Through the analysis of the mass transfer in the interfacial convection process, it is found that the vorticity is a major factor affecting the liquid mass transfer coefficient for the Rayleigh convection process. The relationship between the vorticity and the mass transfer coefficient was obtained, and a correlation was established. An effective method to predict liquid mass transfer coefficient by measuring velocity fields was established for the processes with Rayleigh convection. |
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| Keywords: | interface mass transfer carbon dioxide Rayleigh convection laser induced fluorescence particle image velocimetry |
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