Experimental determination of the critical line for (carbon dioxide + ethane) and calculation of various thermodynamic properties for (carbon dioxide + n-alkane) using the PSRK model
Experimental determination of the critical line for (carbon dioxide + ethane) and calculation of various thermodynamic properties for (carbon dioxide + n-alkane) using the PSRK model
复制标题
使用 PSRK 模型实验确定（二氧化碳乙烷）的临界线并计算（二氧化碳正烷烃）的各种热力学性质
DOI：
10.1006/jcht.2000.0611
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发表时间：
2000
期刊：
影响因子：
--
通讯作者：
P. Kolář
中科院分区：
文献类型：
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作者：
S. Horstmann;K. Fischer;J. Gmehling;P. Kolář
二氧化碳+乙烷二元体系在纯组分及其混合物的临界区表现出一种特殊而有趣的相平衡行为。用流动仪测定了该体系的临界线。实验结果与预测Soave-Redlich-Kwong（PSRK）模型进行了比较。本文还应用PSRK模型计算了临界点、（汽+液）平衡、共沸点、过量沸点（HE）、过量体积（VE）和亨利系数（H_（12））。研究的体系包括（二氧化碳+乙烷、丙烷、正丁烷、正十六烷）.在PSRK计算中，对于（二氧化碳+正烷烃）仅需要一对温度依赖的相互作用参数。计算结果与实验数据进行了比较。详细讨论了（二氧化碳+乙烷）体系的过剩性质与相平衡的关系。
Abstract The binary (carbon dioxide + ethane) exhibits an unusual and interesting phase equilibrium behaviour especially in the critical region of the pure components and their mixtures. The critical line of this system was determined by using a flow apparatus. The experimental results were compared with the predictive Soave–Redlich–Kwong (PSRK) model. In this paper the PSRK model was also applied to the calculation of critical points, (vapour + liquid) equilibria, azeotropic points, excess enthalpies (HE), excess volumes (VE), and Henry’s coefficients (H12). The investigated systems included (carbon dioxide + ethane, or propane, or n -butane, or n -hexadecane). In the PSRK calculations only one pair of temperature-dependent interaction parameters is required for (carbon dioxide + an n -alkane). The calculated results were compared with experimental data. The relation of excess properties with phase equilibria in (carbon dioxide + ethane) was discussed in detail.