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采用PR方程和MHV1混合规则结合Eyring绝对速率理论,建立了一种预测二元混合溶液高压黏度的模型。对9种二元溶液体系,包括6种烃类非水溶液和3种醇类水溶液在0.1 MPa与高压下的黏度进行了关联和预测,MHV1混合规则中的超额Gibbs自由能项GE分别由van Laar方程和Wilson方程计算。在0.1 MPa和高压时采用van Laar方程计算得到的黏度值与文献值的绝对平均偏差分别为0.87%与2.46%,优于采用Wilson方程时的计算结果。
Using PR equation and MHV1 mixing rule combined with Eyring absolute rate theory, a model for predicting high pressure viscosity of binary mixed solution was established. The correlations and predictions of the viscosities of nine binary systems, including six kinds of hydrocarbon nonaqueous solutions and three kinds of alcoholic solutions, under 0.1 MPa and high pressure were carried out. The excess Gibbs free energy GE in MHV1 mixing rule was respectively calculated by van Laar Equation and Wilson equation calculation. The absolute mean deviations of the viscosity values from the literature values calculated by the van Laar equation at 0.1 MPa and high pressures are 0.87% and 2.46%, respectively, which are better than those obtained when the Wilson equation is used.