本文提供了一种直接预测HFCs(氢氟烃)和HCs(烃)二元均相共沸物的方法.本方法基于UNIFAC和Wilson活度系数模型,无需实验数据.先由UNIFAC模型获得Wilson二元相互作用系数,然后对热力学关系式进行简单的化简,应用牛顿迭代法对二元混合物压力求极值,从而获得共沸组分.实例计算显示,预测结果与实验数据具有良好的一致性.
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