Vapour-liquid equilibrium data for the hydrogen sulphide plus n-heptane system at temperatures from 293.25 to 373.22 K and pressures up to about 6.9 MPa

被引:10
|
作者
Theveneau, Pascal [1 ]
Coquelet, Christophe [1 ]
Richon, Dominique [1 ]
机构
[1] Ecole Natl Super Mines, Ctr Energet & Procedes, CEP,TEP, CNRS,FRE 2861, F-77305 Fontainebleau, France
关键词
VLE data; high-pressures; modelling; hydrogen sulphide; n-heptane;
D O I
10.1016/j.fluid.2006.09.021
中图分类号
O414.1 [热力学];
学科分类号
摘要
Isothermal vapour-liquid equilibrium data have been measured for the binary hydrogen sulphide-n-heptane system (H2S + n-C7) at five temperatures between 293.25 and 373.22 K, and pressures between 0.3979 and 6.8283 MPa. The experimental method used in this work is of the static-analytic type, taking advantage of two pneumatic capillary samplers (Rolsi (TM), Armines' patent) developed in the CEP/TEP laboratory. The data were obtained with uncertainties within +/- 0.015 K, +/- 0.0003 MPa or +/- 0.0006 MPa depending on the pressure transducer used, and +/- 3% for molar compositions. The isothermal P, x, y data are well represented with the Peng-Robinson equation of state using the Mathias-Copeman alpha function and the Wong-Sandier mixing rules involving the NRTL model. The experimental data are compared to predictions from the PSRK group contribution equation of state and data found in the literature. (c) 2006 Elsevier B.V. All rights reserved.
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页码:179 / 186
页数:8
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