Vapor-liquid equilibrium measurements and modeling of the n-butane plus ethanol system from 323 to 423 K

被引：17

作者：

Soo, Chien-Bin ^{[1
]}

El Ahmar, Elise ^{[1
]}

Coquelet, Christophe ^{[1
]}

Ramjugernath, Deresh ^{[2
]}

Richon, Dominique ^{[1
]}

机构：

[1] MINES ParisTech, CEP TEP, Ctr Energet & Procedes, F-77305 Fontainebleau, France

[2] Univ KwaZulu Natal, Sch Chem Engn, Thermodynam Res Unit, ZA-4041 Durban, South Africa

来源：

FLUID PHASE EQUILIBRIA | 2009年 / 286卷 / 01期

关键词：

Experimental VLE data; Ethanol; n-Butane; Peng-Robinson EoS; PC-SAFT EoS; EQUATION-OF-STATE; PERTURBED-CHAIN SAFT; CUBIC EQUATIONS; CRITICAL REGION; POLAR SYSTEMS; MIXTURES; MOLECULES; EXTENSION; METHANOL; EOS;

D O I：

10.1016/j.fluid.2009.08.007

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Vapor-liquid equilibrium (VLE) data are presented for the n-butane + ethanol system in the temperature range from 323 to 423 K. Measurements were performed using a "static-analytic" apparatus, equipped with two electromagnetic ROLSI (TM) capillary samplers, and thermally regulated via an air bath. This work presents vapor compositions which have not been explicitly measured previously. The modeling of the data was performed using two models: the Peng-Robinson equation of state with the Wong and Sandler mixing rule and NRTL excess function (PR/WS/NRTL); and the perturbed-chain statistical associating fluid theory (PC-SAFT) equation of state. To assess the effect of dipole-dipole interactions present, a dipolar contribution developed by Jog and Chapman (1999)[20] was tested with the second model. Temperature dependent binary interaction parameters have been adjusted to the new data. The PR/WS/NRTL equation of state shows good correlation with the results, while the PC-SAFT is slightly less accurate. (C) 2009 Published by Elsevier B.V.

引用

页码：69 / 77

页数：9

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