Extrapolation of High Pressure VLE Data and Simultaneous Representation of Excess Enthalpies by Using NRTL Equation

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Extrapolation of High Pressure VLE Data and Simultaneous Representation of Excess Enthalpies by Using NRTL Equation

JI Weirong^a; E．Stiebing^b

^a Faculty of Chemical Engineering and Material Science, Zhejiang University of Technology, Hangzhou 310014, China
^b Department of Engineering Science, Martin-Luther University of Halle-Wittenberg, D-06099, Halle, Germany

Received:1900-01-01 Revised:1900-01-01 Online:2005-08-28 Published:2005-08-28
Contact: JI Weirong

用NRTL方程推算高压汽液平衡并同时描述过量焓

计伟荣^a; E．Stiebing^b

^a Faculty of Chemical Engineering and Material Science, Zhejiang University of Technology, Hangzhou 310014, China
^b Department of Engineering Science, Martin-Luther University of Halle-Wittenberg, D-06099, Halle, Germany

通讯作者: 计伟荣

Abstract

Abstract: The non-random two liquids （NRTL） equation together with the Pitzer/Curl Virial equation of state are used to investigate the simultaneous representation of excess enthalpies （h^E） and vapour-liquid equilibria （VLE） and the VLE prediction from h^E data. The calculation strategy for properly determining NRTL parameters and the effect of their temperature dependence on the simultaneous correlation of h^E and VLE data and the VLE extrapolation are analysed in detail.

Key words: non-random two liquids （NRTL） equation, excess enthalpy, vapour-liquid equilibrium, prediction

摘要： The non-random two liquids （NRTL） equation together with the Pitzer/Curl Virial equation of state are used to investigate the simultaneous representation of excess enthalpies （h^E） and vapour-liquid equilibria （VLE） and the VLE prediction from h^E data. The calculation strategy for properly determining NRTL parameters and the effect of their temperature dependence on the simultaneous correlation of h^E and VLE data and the VLE extrapolation are analysed in detail.

关键词: 高压汽液;平衡性;过量焓;NRTL工程;热力学

JIWeirong,E．Stiebing. Extrapolation of High Pressure VLE Data and Simultaneous Representation of Excess Enthalpies by Using NRTL Equation[J]. , DOI: .

计伟荣,E．Stiebing. 用NRTL方程推算高压汽液平衡并同时描述过量焓[J]. , DOI: .

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