含HCl四元水盐体系溶解度预测及其在工艺上的应用: HCl-LiCl-H2O体系0°C和20°C溶解度预测

摘要

The ten parameters which represent the ion-interactions of HCl-LiCl-H2O system at 0°C and 20°C were obtained by applying Pitzer’s Model and thermodynamic data presented in the literatures. The solubilities of the system at 0°C and 20°C were successfully predicted by using above mentioned parameters. The study provided the basic parameters to the thermodynamic properties of water-salt systems. The prediction is of great significance in extraction various salts from brine. Combining the computer technology with the experimental study, a lot of hand works were reduced.%利用文献数据，结合pitzer方程，进行了HCl-LiCl-H2O 体系的参数化工作，得到了该体系在0°C和20°C时HCl、LiCl的单盐参数以及两离子和三离子相互作用参数共10个。利用得到的参数，预测该体系在0°C和20°C时的溶解度获得满意结果。为盐水体系物理化学性质的计算提供了最基本的参数。将Pitzer模型从室温推广到其它温度时的溶解度预测，结果对盐湖资源中用酸法提取LiCl的工艺具有重要的指导意义。将计算机技术应用到了实验研究中，减少了繁重的实验测定工作。