A new high-pressure vapour-liquid equilibrium apparatus

被引：36

作者：

Naidoo, Paramespri ^{[1
]}

Ramjugernath, Deresh ^{[1
]}

Raal, Johan David ^{[1
]}

机构：

[1] Univ KwaZulu Natal, Sch Chem Engn, Thermodynam Res Unit, Howard Coll Campus, ZA-4041 Durban, South Africa

来源：

FLUID PHASE EQUILIBRIA | 2008年 / 269卷 / 1-2期

基金：

新加坡国家研究基金会;

关键词：

high-pressure phase equilibria; VLE static apparatus;

D O I：

10.1016/j.fluid.2008.05.002

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A new variable volume static type high-pressure VLE apparatus has been designed, constructed, and tested on a number of systems. The apparatus has an operating temperature range from 250 K to 393 K and pressure range from absolute vacuum up to 120 bar. The stainless steel equilibrium cell has sapphire viewing windows and a novel liquid sampling technique utilizing gas chromatographic sampling valves which permit phase sampling without disturbance to the equilibrium condition. The apparatus was tested by measuring VLE isotherms for some binary systems, viz., carbon dioxide + toluene at 283.25 K, 311.15 K, 353.15 K and 391.45 K; carbon dioxide + methanol at 263.15 K, 273.15 K, 313.15 K, 363.15 K and 373.15 K; and propane + 1-propanol at 323.15 K, 378.15 K and 393.15 K. Satisfactory modeling was obtained of the measured VLE data and thermodynamic consistency tests showed the data to be not inconsistent. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：104 / 112

页数：9

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