二氧化碳在化学溶剂DEEA中气液平衡模型研究
Experiments and modeling of vapor-liquid equilibrium data in DEEA-CO2-H2O system
温室效应，全球变暖等问题日益严峻，对人们的生活造成了严重的影响。因此如何减缓温室气体排放，主要包括近年来由于工业迅速发展所带来的高CO2排放，成了研究的重点。其中化学溶剂吸收法被认为是最具有前景的应用技术。目前传统单乙醇胺（MEA）溶液被广泛应用于实践，但是MEA具有较高的解吸热，能耗较高，目前叔胺由于其低的解吸热被广泛研究。本文针对DEEA化学溶剂，通过体系实验溶解度数据，研究分析二乙基乙醇胺溶液(DEEA-CO2-H2O)平衡状态气液平衡状态的热力学模型。本文对DEEA浓度在1M, 2M,，温度293K, 313K, 333K, 353K，压力6.2Kpa-100.8Kpa的条件下进行了深入的实验研究。通过溶解度数据回归得到质子化胺离解反应平衡常数K10模型。结果表明KE模型在DEEA-CO2-H2O体系中具有较好的预测能力。KE模型在1M，2M的DEEA条件下预测的平均相对误差为3.28%，5.10%。
Greenhouse gas, global warming problems and etc. are increasingly critical that caused serious impact on people's lives. Thus how to mitigate greenhouse gas emissions mainly including the high CO2 emissions with the rapid industrial development in recent years has been focused by researchers. This paper aims at the chemical solvent of DEEA, researches and analysis the vapor and liquid equilibrium thermodynamics model in the system of diethylethanol amine solution (DEEA -CO2 -H2O). This paper has a deep experimental research with the experimental DEEA concentration of 1M, 2M, temperature of 293K, 313K, 333K, 353K and CO2 partial pressure of 6.2Kpa-100.8Kpa. By regressing of solubility data, the protonation amine dissociation reaction equilibrium constant K10 has been regressed. The results turns out that KE model has a good prediction in DEEA-CO2-H2O system. The KE model prediction AAD in 1M, 2M DEEA is 3.28% and 5.10%.
罗萧、陈娜、高红霞、梁志武
化学
二氧化碳平衡溶解度气液平衡KE模型
arbon dioxideEquilibrium solubilityVapor and liquid equilibriumKE model
罗萧,陈娜,高红霞,梁志武.二氧化碳在化学溶剂DEEA中气液平衡模型研究[EB/OL].(2016-06-01)[2025-08-16].http://www.paper.edu.cn/releasepaper/content/201606-20.点此复制
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