High-pressure vapor-liquid and vapor-liquid-liquid equilibria in the carbon dioxide+1-heptanol system

被引：24
|
作者：
Secuianu, Catinca [1 ]
Feroiu, Viorel [1 ]
Geana, Dan [1 ]
机构：
[1] Univ Politehn Bucuresti, Dept Appl Phys Chem & Electrochem, Bucharest 011061, Romania
来源：
FLUID PHASE EQUILIBRIA | 2008年 / 270卷 / 1-2期
关键词：
phase equilibrium; carbon dioxide; 1-heptanol; high-pressure; equation of state;
D O I：
10.1016/j.fluid.2008.06.020
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Vapor-liquid equilibria (VLE) and vapor-liquid-liquid equilibria (VLLE) data for the carbon dioxide + 1-heptanol system were measured at 293.15, 303.15, 313.15, 333,15 and 353.15 K. Phase behavior measurements were made in a high-pressure Visual cell with variable volume, based on the static-analytic method. The pressure range under investigation was between 0.58 and 14.02 MPa. The Soave-Redlich-Kwong (SRK)-EOS coupled with Huron-Vidal (HV) mixing rules and a reduced UNIQUAC model, Was used in a semi-predictive approach, in order to represent the complex phase behavior (critical curve, LLV line, isothermal VLE, LLE, and VLLE) of the system. The topology of phase behavior is qualitatively correct predicted. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：109 / 115
页数：7
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