Measurement using laser induced fluorescence technique for interfacial convection during water-CO<sub>2</sub> absorption process

LI Luxing; HU Nan; YUAN Xigang

doi:10.11949/j.issn.0438-1157.20160455

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Measurement using laser induced fluorescence technique for interfacial convection during water-CO₂ absorption process

更新时间：2025-11-26

- Measurement using laser induced fluorescence technique for interfacial convection during water-CO₂ absorption process
- CIESC Journal Vol. 67, Issue 10, Pages: 4055-4063(2016)
- 作者机构：
  
  天津大学化工学院, 化学工程联合国家重点实验室,天津,300072
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20160455
  CLC： Q021.4
- Online First：05 October 2016，
  
  Published：05 October 2016
- 稿件说明：
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LI Luxing, HU Nan, YUAN Xigang. Measurement using laser induced fluorescence technique for interfacial convection during water-CO₂ absorption process[J]. CIESC Journal, 2016, 67(10): 4055-4063. DOI: 10.11949/j.issn.0438-1157.20160455.
DOI：

LI Luxing, HU Nan, YUAN Xigang. Measurement using laser induced fluorescence technique for interfacial convection during water-CO₂ absorption process[J]. CIESC Journal, 2016, 67(10): 4055-4063. DOI: 10.11949/j.issn.0438-1157.20160455. DOI：

摘要

建立了采用激光诱导荧光技术观测水吸收CO2过程中界面对流现象的实验装置，利用荧光素钠作为荧光剂，通过标定获得了CO2在水中溶解浓度与荧光强度的关系，进而获得了定量测量水中CO2浓度分布的实验方法。通过建立的实验装置和方法，测量了水吸收CO2过程中液体近界面Rayleigh对流发生时的浓度分布演化过程。利用实验结果对文献中报道的临界Rayleigh数进行了验证；并对上述吸收体系的界面传质由分子扩散主导逐步转变为对流传质主导的过程，以及Rayleigh对流对吸收过程界面传质的强化进行了定量分析。

Abstract

An experimental apparatus based on laser induced fluorescence (LIF) technique for measuring interfacial Rayleigh convection in process of water-CO2 absorption was established. By fluorescein sodium and a calibration process

the correlation between the fluorescent light intensity and the concentration of CO2 in water was obtained

and thus an LIF method of quantitative measurement of CO2 concentration in water was established. By established installation and method

the concentration distribution evolution for the Rayleigh convection developed near the surface of water in the water-CO2 absorption process was investigated. Validation of the measurement results was made by checking with the critical value of Rayleigh number reported in literature. The experimental results were also used to analyze the transition mass transfer regime from molecular diffusion to convective diffusion

and the enhancement effect of the interfacial Rayleigh convection on the mass transfer process.

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HU Nan

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FU Qiang

LI Luxing

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Cong SHEN

Jiayin WANG

Jingxuan YANG

Related Institution

State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University

College of Chemistry and Chemical Engineering, Taiyuan University of Technology

State Key Laboratory of Chemical Engineering, School of Engineering and Technology, Tianjin University

School of Chemistry and Chemical Engineering, Fuzhou University

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Measurement using laser induced fluorescence technique for interfacial convection during water-CO2 absorption process

DOI：10.11949/j.issn.0438-1157.20160455

摘要

Abstract

关键词

Keywords

references

Measurement using laser induced fluorescence technique for interfacial convection during water-CO₂ absorption process