含盐酸和盐的气液固三相平衡计算  

Vapour-liquid-solid equilibrium calculation of solution containing HCl and salt

作　　者：庞景辉 胡仰栋[1] 伍联营[1] 徐显朕[1] 

机构地区：[1]中国海洋大学化学化工学院,山东青岛266100

出　　处：《化学工程》2014年第2期37-39,54,共4页Chemical Engineering(China)

摘　　要：利用亨利定律和溶解平衡方程,建立了气液固同时存在时体系总Gibbs自由能的数学模型,活度系数模型选用Pitzer模型,基于相平衡体系Gibbs自由能最小化原理,运用遗传算法求解,计算NaCl-KCl-HCl-H2O体系固液平衡和气液平衡,并和实验数据进行对比,进一步计算了该体系固液气三相平衡,实现了一步计算固相、液相和气相的组成。A mathematical model of total Gibbs free energy of vapour-liquid-solid system was established by using Henry＇s law and dissolution equilibrium equation. The computational process selects the Pitzer model as the calculation of activity coefficient. On the basis of the Gibbs free energy minimization principle of phase equilibrium system, and combined with genetic algorithm, the vapour-liquid equilibrium and liquid-solid equilibrium of HCl-KCl-NaCl-H2O were calculated. Compared with the experimental data, the calculation realized calculating the phase composition of solid-liquid-vapour phase in one step.

关 键 词：Gibbs自由能最小法 气液固三相平衡 HCl-KCl-NaCl-H2O 

分 类 号：TQ026.9[化学工程]