用Tan法预测二元加盐系气液平衡的研究

Prediction of VLE for Binary Systems Solved Salt with Tans Method

测定了7个纯液体加盐饱和的15个物系的蒸气压—温度数据,并进行了关联。用Tan法预测了3个二元系加盐后的7个物系在1.013×10~5Pa下的VLE,与文献比较,结果满意。用Tan的盐效应分类预测方法进行了分类预测,七个物系的平均相对挥发度比均正确。建议将盐效应分为α】0和α【0两类,简单,易于应用。

Measured vapor pressure vs temperature data of fifteen systems of seven liquids saturated with salt and corrlated. VLE of seven systems of three binary systems saturated with salt at 1. 013 × 105 pa by Tan model is also predicted. The results predicted are satisfactory compared with data from literature. The salt effect is predicted and classified by Tan model. The of seven systems is well predicted. It is suggested that the revise of the classificaion of salt effect into two categories of a>0 and a<0 should be made, because it becomes simpler and easier to employ.