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首页> 外文期刊>The Journal of Supercritical Fluids >High-pressure vapor-liquid equilibria in the nitrogen-n-nonane system
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High-pressure vapor-liquid equilibria in the nitrogen-n-nonane system

机译：氮-正壬烷体系中的高压气液平衡

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摘要

New experimental vapor-liquid equilibrium data of the N2-n-nonane system were measured over a wide temperature range from 344.3 to 543.4 K and pressures up to 50 MPa.A static-analytical apparatus with visual sapphire windows and pneumatic capillary samplers was used in the experimental measurements.Equilibrium phase compositions and vapor-liquid equilibrium ratios are reported.The new results were compared with those reported by other authors.The comparison showed that the pressure-liquid phase composition data reported in this work are in good agreement with those determined by others.The experimental data were modeled with the PR and PC-SAFT equations of state by using one-fluid mixing rales and a single temperature-independent interaction parameter.Results of the modeling showed that the PC-SAFT equation was superior to the PR equation in correlating the experimental data of the N2-n-nonane system.
机译：在344.3至543.4 K的宽温度范围内和最高50 MPa的压力下，测量了N2-n-壬烷体系的新实验气液平衡数据，并使用了带有可视化蓝宝石窗口和气动毛细管采样器的静态分析仪。报告了平衡相组成和气液平衡比，并将新结果与其他作者的结果进行了比较，比较表明，这项工作中报道的压力-液相组成数据与确定的相吻合。通过使用单流体混合规则和一个独立于温度的相互作用参数，利用PR和PC-SAFT状态方程对实验数据进行建模，建模结果表明PC-SAFT方程优于PR方程，用于关联N2-n-壬烷体系的实验数据。

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