| 单乙醇胺水溶液化学吸收CO2的研究 |
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| 引用本文： | 朱春英,马友光,高习群,陈登利. 单乙醇胺水溶液化学吸收CO2的研究[J]. 化学工程, 2009, 37(5) |
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| 作者姓名： | 朱春英 马友光 高习群 陈登利 |
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| 作者单位： | 天津大学,化工学院,化学工程联合国家重点实验室,天津,300072;辽阳石油化纤公司亿方工业公司,辽宁,辽阳,111003 |
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| 摘 要： | 有机胺水溶液化学吸收CO2在工业上广泛应用,对其传质过程的微观机理进行研究十分必要。文中以对流扩散方程为基础,考虑了界面阻力对传质的影响,建立了带有化学反应的气液吸收过程液相侧非稳态传质模型,得到了传质系数表达式。利用激光全息干涉仪对不同液相主体流速下单乙醇胺(MEA)水溶液化学吸收CO2过程进行了实验研究,测定了传质达到稳态时的液相侧近界面浓度、浓度边界层厚度和传质系数。结果表明:随着液相主体流速的增加,近界面浓度和浓度边界层厚度减小,而传质系数增大;MEA在水溶液中的质量分数由0.1%增大到0.2%时,CO2吸收过程达到稳态时的近界面浓度、浓度边界层厚度及传质系数均增大。传质系数模型计算值与实验值吻合良好。
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| 关 键 词： | 化学吸收 激光全息干涉 界面 传质模型 CO2 |
Chemical absorption of CO_2 into monoethanolamine aqueous solution |
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| ZHU Chun-ying,MA You-guang,GAO Xi-qun,CHEN Deng-li. Chemical absorption of CO_2 into monoethanolamine aqueous solution[J]. Chemical Engineering, 2009, 37(5) |
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| Authors: | ZHU Chun-ying MA You-guang GAO Xi-qun CHEN Deng-li |
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| Affiliation: | 1.School of Chemical Engineering and Technology;State Key Laboratory of Chemical Engineering;Tianjin University;Tianjin 300072;China;2.Yifang Industry Corporation;Liaoyang Petrochemical Fiber Company;Liaoyang 111003;Liaoning Province;China |
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| Abstract: | The study of micromechanism of mass transfer process of CO2 absorbed into amines solution is very essential due to its broad applications in the industrial processes.On the basis of the convection-diffusion equation,taking into account the influence of interfacial resistance on the mass transfer,a non-steady state mass transfer model on liquid side was established for the process of gas-liquid absorption accompanying with chemical reaction,and the prediction model of mass transfer coefficient was obtained.T... |
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| Keywords: | CO2 |
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