基于Oiver-Kai参考态的改进MHV1混合规则

A NEW MODIFIED MHV1 MIXING RULE BASED ON THE NEW REFERENCE STATE FOR THE VAPOR-LIQUID EQUILIBRIA OF MIXTURES

通过引入不同以往MHV1混合规则的参考态 ,结合两参数通用状态方程 ,从两个方面对MHV1混合规则提出了相平衡预测的改进。关联结果表明 ,计算的结果与实验数据吻合的很好。将该模型与原MHV1混合规则 (V/b为 1 2 35 )及取V/b为 1的MHV1混合规则的计算结果进行了比较 ,结果表明 ,改进后的模型保持了原有模型对称体系良好的预测精度 ,同时 ,对于强级性气液相平衡体系的预测精度有了一定的预测。

By introducing the new reference state different from the original one of MHV1 mixing rule, the following modifications are proposed to the original MHV1 mixing rule.The correlated results are in good agreement with existing experimental data within a wide range of temperatures and pressures. In comparison with the original MHV1 model, the modified MHV1 mixing rule not only keeps good accuracy for polar systems, but also gives much better predictions for the vapor-liquid equilibria of strongly polar systems.