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Phase Equilibrium in Ternary System with Carbondioxide, Water, and Acetic Acid at High Pressure
Author(s): 
Pages: 330-334
Year: Issue:  3
Journal: JOURNAL OF CHEMICAL ENGINEERING OF CHINESE UNIVERSITIES

Keyword:  高压相平衡Peng-Robinson状态方程超临界状态二氧化碳;
Abstract: 超临界状态下的CO2在含有有机溶剂的水溶液中可作为萃取剂.这种情况可用于水和有机酸的分离, 也可以用于从水溶液中萃取产品.要设计这样的过程,CO2-H2O-有机酸系统相平衡的数据是必不可少的.为此,在实验室建立了一套高压相平衡装置.为了验证这套装置的可靠性,测定了CO2-H2O-HAc体系在313K以及压力在15、20、25和30MPa下的相平衡数据,用Peng-Robinson方程[1,2]进行了计算,并与文献值进行了比较.
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