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用改进式Rose釜测定了101.33kPa下N-甲基乙酰胺+醋酸二元体系和N-甲基乙酰胺+醋酸+水三元体系的汽液平衡数据。对N-甲基乙酰胺+醋酸体系VLE数据进行了面积法热力学一致性检验,用NRTL、Wilson、UNIQUAC模型关联得到了相应的模型参数。最后用二元体系的NRTL模型参数推算了所测N-甲基乙酰胺+醋酸+水三元体系的汽液平衡数据。推算结果中,温度的平均偏差为0.94℃,水在汽相中的平均偏差为0.0137。
Vapor-liquid equilibrium data of N-methylacetamide + acetic acid binary system and N-methylacetamide + acetic acid + water ternary system at 101.33 kPa were measured with a modified Rose kettle. The area method thermodynamic consistency test was performed on VLE data of N-methylacetamide + acetic acid system. The corresponding model parameters were obtained by NRTL, Wilson, UNIQUAC model. Finally, the vapor-liquid equilibrium data of the ternary system of N-methylacetamide + acetic acid + water were deduced using the NRTL model parameters of the binary system. In the calculation results, the average temperature deviation is 0.94 ° C, and the average deviation of water in the vapor phase is 0.0137.