UNIFAC和PRSV养成方程相结合预测汽─液相平衡

Vapor-Liquid Equilibrium Prediction by Combination of UNIFAC and PRSV Equations

本文用Ｗｏｎｇ和Ｓａｎｄｌｅｒ的混合规则，ＰＲＳＶ立方型状态方程与ＵＮＩＦＡＣ活度系数模型相结合，对３６种物质组成的５０个二元体系的汽－液相平衡进行了预测，并与实验数据作了比较，考察了２３８０个实验点，汽相组成的平均偏差是０．０１６７，压力的平均偏差是３．７３％。结果表明这种处理方法能在较宽的温度、压力范围内预测各类物系的相平衡行为，为工程计算带来很大的方便。

Vapor-liquid equilirbium for 50 brinary systems which consisted of 36 substanceswere perdicted by PRSV cubic equations combined with UNIFAC activity coefficient model usingthe Wong and Sandler mixing rule,and were compared with the experimental date in this work.2380 experimental points tested,the mean deviation of the composition in gas Phsae was 0.0167 andthat of pressure was 3.73%.This method is capable of predicting various vapor-liquid equilibriumbehaviors in a wide rang of temperature and pressure,and conveniene for engineering calculation.