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以Edwards提出的通用分子热力学模型为基础关联了氮-硫化氢-水、氨-二氧化碳-水.氨-二氧化碳-硫-化三种挥发性弱电解质水溶液体系的汽液平衡.为了将模型扩展至酸水汽提过程中的高组分浓度区、高温度区(可能导致高压)以及高离子强度区的汽液平衡关联.在模型中加入了三元离子交互作用与温度的关系项.并采用了更新的离子反应平衡常数、享利常数和二元交互作用参数.经计算对比.对原模型不能预测的汽液平衡区域,这种关联能给出较好的结果.
Based on the general molecular thermodynamic model proposed by Edwards, the vapor-liquid equilibrium of three kinds of volatile weak electrolyte aqueous solution systems, which are nitrogen-hydrogen sulfide-water, ammonia-carbon dioxide-water, ammonia-carbon dioxide- The high component concentration zone, the high temperature zone (which may lead to high pressure) and the high vapor strength zone in the process of acid-water stripping, the relationship between ternary ion interaction and temperature was added and the The updated ionic reaction equilibrium constants, Henry’s Law and binary interaction parameters are calculated and compared, and the correlation can give good results for the uncontrollable vapor-liquid equilibrium region in the original model.