Isothermal vapor-liquid equilibrium data for the ethylene + 1,1,2,3,3,3-hexafluoro-1-propene binary system between 258 and 308 K at pressures up to 4.56 MPa
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- 作者：Shalendra Clinton Subramoney ; Xavier Courtial ; Paramespri Naidoo ; Christophe Coquelet ; Dominique Richon ; Deresh Ramjugernath
- 关键词：Vapor&ndash ; liquid equilibria ; VLE ; &ldquo ; Static-analytic&rdquo ; method ; ROLSI&trade ; 1 ; 1 ; 2 ; 3 ; 3 ; 3-Hexafluoro-1-propene ; Hexafluoropropylene ; R-1216 ; Fluorocarbon
- 刊名：Fluid Phase Equilibria
- 出版年：2013
- 出版时间：15 September, 2013
- 年：2013
- 卷：353
- 期：Complete
- 页码：7-14
- 全文大小：877 K
文摘
Isothermal vapor-liquid equilibrium data are reported for ethylene + 1,1,2,3,3,3-hexafluoro-1-propene mixtures at six temperatures in the 258.35-307.38 K range, and pressures up to 4.56 MPa. The experimental data were measured using an apparatus based on the ¡°static-analytic¡± method equipped with a movable ROLSI? capillary sampler for repeatable and reliable equilibrium phase sampling and handling. The isothermal P-x-y data are well correlated with a model comprised of the Peng-Robinson equation of state containing the Mathias-Copeman alpha function, Wong-Sandler mixing rule, and NRTL local composition model. The combined model is termed ¡°PR-MC-WS-NRTL¡±. The studied system does not exhibit azeotropic behavior nor liquid-liquid immiscibility over the range of investigated temperatures. Mixture critical points are calculated from the experimental vapor-liquid equilibrium data via the extended scaling laws and the PR-MC-WS-NRTL model, and are found to be in good agreement with the experimental isothermal phase envelopes.