A group-contribution equation of state for predicting vapor-liquid equilibria and volumetric properties of carbon dioxide-hydrocarbons systems

被引：15

作者：

Berro, C ^{[1
]}

Barna, L ^{[1
]}

Rauzy, E ^{[1
]}

机构：

[1] INSA,LAB CHIM PHYS APPL ENVIRONNEMENT,F-69000 VILLEURBANNE,FRANCE

来源：

FLUID PHASE EQUILIBRIA | 1996年 / 114卷 / 1-2期

关键词：

theory; equations of state; excess function; group-contribution; vapor-liquid equilibria; saturated densities; carbon dioxide; hydrocarbons;

D O I：

10.1016/0378-3812(95)02799-8

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In order to predict the solubility of carbon dioxide in heavy solvents the model excess function-equation of state is applied. It combines an accurate equation of state for carbon dioxide, a Peng-Robinson-type one for hydrocarbons and a Van Laar-like excess function defined at constant packing fraction in which interaction parameters are estimated from contribution-group method. It is shown that the model proposed leads to a good correlation and prediction of vapour-liquid equilibria of binary systems composed of carbon dioxide and hydrocarbons. Its ability for estimating volumetric properties is also analyzed.

引用

页码：63 / 87

页数：25

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