摘要
用热力学一致的方法扩展了Ｗｉｌｓｏｎ方程，使适用于模拟含分子态和离子态溶质的弱电解质水溶液体系。模型中用Ｗｉｌｓｏｎ方程表示短程作用力贡献，用Ｄｅｂｙｅ—Ｈòｋｅｌ原理表示离子间长程作用力贡献。为检验模型适用性，关联计算了ＮＨ３—ＣＯ２—Ｈ２Ｏ体系在０４ＭＰａ和０７ＭＰａ压力下的恒压汽液相平衡，并将计算值与实验值进行了比较，取得较满意的结果。
The semi-empirical Wilson equation has been extended in a thermodynamically consistent manner to allow for simulating VLE of weak electrolyte aquous systems with molecular as well as ionic solutes The model is based upon Wilson equation and Pitzer-Debye-Hockel equation to represent short Vange interaction Contribution and long range interaction contribution respectively With this model,Vapor-Liquid equilibrium data for NH 3—CO 2—H 2O systems at 0 4MPa and 0 7MPa are correlated to check the models accurate The results are in good agreement with experimental data
