Calculation of CO2, CH4 and H2S solubilities in aqueous electrolyte solution at high pressure and high temperature

被引：0
作者：
Hervé C. [1 ]
Suyu Y. [1 ]
Bernard L. [1 ]
Jacques A. [1 ]
Pierre X. [1 ]
机构：
[1] Laboratoire Haute Pression, Centre Universitaire de Recherche Scientifique, Université de Pau, 64000 Pau, Avenue de I'Université
来源：
Journal of Thermal Science | 1997年 / 6卷 / 4期
关键词：
Electrolytes solutions; High pressure; High temperature; Solubility; Vapor-liquid equilibria;
D O I：
10.1007/s11630-997-0004-7
中图分类号：
学科分类号：
摘要：
This paper reports an investigation into the characterisation of liquid-vapor electrolyte solutions at high pressure and high temperature. A procedure to enable calculations of methane, carbon dioxide and hydrogen sulphide solubilities in brines (0-6 m.) for temperature from 25 to 350°C and for pressures from 1 to 1800 bar is presented. The model is based on Helgeson, Kirkham and Flowers modified equations of state (HKF) and on the semi-empirical interaction model introduced by Pitzer. HKF modified equations of state are used to calculate the reference fugacity of gas species, and the Pitzer ionic interaction model is used to calculate the activity coefficient of dissolved species (i.e. ionic or neutral). The efficiency of the combination of the two models is confirmed by several comparisons with data in the literature.
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页码：251 / 259
页数：8
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