Comparison of the Peng−Robinson and Soave−Redlich−Kwong Equations of State Using a New Zero-Pressure-Based Mixing Rule for the Prediction of High-Pressure and High-Temperature Phase Equilibria
Comparison of the Peng−Robinson and Soave−Redlich−Kwong Equations of State Using a New Zero-Pressure-Based Mixing Rule for the Prediction of High-Pressure and High-Temperature Phase Equilibria
复制标题
使用新的基于零压的混合规则预测高压和高温相平衡的 Peng−Robinson 和 Soave−Redlich−Kwong 状态方程的比较
DOI：
10.1021/ie9706424
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发表时间：
1998
影响因子：
4.2
通讯作者：
D. Bluck
中科院分区：
文献类型：
--
作者：
C. Twu;J. E. Coon;D. Bluck
Peng - Robinson （PR）和Soave - Redlich - Kwong （SRK）状态方程可能是炼油厂和天然气加工工业中最广泛使用的三次状态方程，用于预测含有非极性组分的系统的汽液平衡。然而，最近发展起来的将液体活度模型与状态方程结合起来的新混合规则，将这种方程的应用扩展到了高度非理想体系。本文提出了一种新的基于零压力的混合规则，在不需要任何额外的二元相互作用参数的情况下，以极高的精度再现了任何活度模型的多余吉布斯自由能和液体活度系数。我们利用NRTL液体活度模型和二元参数在低温下确定的新混合规则检验了Peng - Robinson和Soave - Redlich - Kwong状态方程的性能，MHV1和Wong - Sandler用于预测高压和高温…
The Peng−Robinson (PR) and Soave−Redlich−Kwong (SRK) equations of state are probably the most widely used cubic equations of state in the refinery and gas-processing industries for the prediction of vapor−liquid equilibria for systems containing nonpolar components. The new mixing rules which have recently been developed that combine liquid activity models with the equations of state, however, have extended the application of such equations to highly nonideal systems. A new zero-pressure-based mixing rule is presented here that reproduces, with extremely high accuracy, the excess Gibbs free energy as well as the liquid activity coefficients of any activity model without requiring any additional binary interaction parameters. We examine the performance of the Peng−Robinson and Soave−Redlich−Kwong equations of state using the NRTL liquid activity model with binary parameters determined at low temperatures in this new mixing rule, MHV1, and Wong−Sandler for the prediction of high-pressure and high-temperatur...