| 高压下CO2-乙醇二元系统的气液平衡 |
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| 引用本文： | 田宜灵,韩铭,陈丽,冯季军,秦颖.高压下CO2-乙醇二元系统的气液平衡[J].物理化学学报,2001,17(2):155-160. |
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| 作者姓名： | 田宜灵 韩铭 陈丽 冯季军 秦颖 |
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| 作者单位： | Department of Chemistry,Tianjin University,Tianjin 300072 |
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| 摘 要： | 在带有可视石英窗的可变体积高压釜内,在60－180 ℃温度范围、 4.0－14.5 MPa压力范围下测定了CO2和乙醇二元系统的相平衡数据.根据实验结果预测了pc,Tc,xc.用Peng Robinson方程和Wong Sandler混合规则进行了拟合,所得结果与实验数据基本相符.
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| 关 键 词： | 高压相平衡 CO2 乙醇 Peng-Robinson状态方程 |
| 收稿时间： | 2000-06-26 |
| 修稿时间： | 2000年6月26日 |
Study on Vapor-Liquid
Phase Equilibria for CO2-C2H5OH System |
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| Tian Yi-Ling.Study on Vapor-Liquid
Phase Equilibria for CO2-C2H5OH System[J].Acta Physico-Chimica Sinica,2001,17(2):155-160. |
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| Authors: | Tian Yi-Ling |
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| Institution: | Department of Chemistry,Tianjin University,Tianjin 300072 |
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| Abstract: | The vapor liquid phase equilibria of the binary system of CO2 C2H5OH were measured for four isotherms between 60 ℃ and 180 ℃ under the pressure range of 5.0 MPa to 14.5 MPa.The measurements were carried out in a cylindrical autoclave with a moveable piston and a window allowing observation. The compositions,densities and molar volumes of the two coexisting phases are presented. The critical values Tc.pc,xc were predicted.We have correlated phase equilibrium data with the Peng Robinson equation of state and the Wong Sandle mixture combination rule for this system.The calculated results agree fairly with the experimental data. |
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| Keywords: | High-pressure phase equilibrium Ethanol Carbon dioxide |
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