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.
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页数：8
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