Phase equilibrium modeling for methane solubility in aqueous sodium chloride solutions using an association equation of state

被引：13

作者：

Xiong, Wei ^{[1
]}

Bian, Xiao-Qiang ^{[1
]}

Liu, Yong-Bing ^{[1
]}

机构：

[1] Southwest Petr Univ, Petr Engn Sch, Chengdu 610500, Peoples R China

来源：

FLUID PHASE EQUILIBRIA | 2020年 / 506卷

基金：

中国国家自然科学基金;

关键词：

Methane; Sodium chloride; Solubility; Equation of state; Pseudo-association; CARBON-DIOXIDE; WATER-CONTENT; GAS SOLUBILITY; HIGH-PRESSURES; SYSTEM H2O-CO2-NACL; HYDROCARBON SYSTEMS; RAMAN-SPECTROSCOPY; MUTUAL SOLUBILITY; SALT SOLUTIONS; BINARY-SYSTEM;

D O I：

10.1016/j.fluid.2019.112416

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A new formulation for the fraction of electron acceptor sites of methane (CH4) of cubic-plus-association couple with Huron-Vidal (CPA-HV) model is presented, and a combine rule is used to calculate the cross-associating strength of CH4-water (H2O) binary system. Meanwhile, the interaction parameters (E-ij, E-ji and F) of CPA-HV model are regressed for CH4-H2O binary and CH4-H2O-NaCl ternary systems. The predictions of CPA-HV model are consistent with a lot of binary and ternary experimental data of these systems. Compared with CPA-vdW and SRK-HV models, the accuracy of CPA-HV model is the best for vapor-liquid equilibria of CH4-H2O system. The average absolute relative deviations of the predicted CH4 solubility in H2O and aqueous sodium chloride solutions for CPA-HV model are respectively 5.84% and 6.91%. (C) 2019 Elsevier B.V. All rights reserved.

引用

页数：8

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