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由于NRTL方程适合于计算液液平衡和汽液平衡,可由测得的恒沸温度以下的2元液液平衡互溶度数据求取NRTL方程参数,然后用此参数推算多元部分互溶体系的汽液平衡。克服了2元部分互溶体系汽液平衡数据难以准确测定的困难,提供了一种由2元平衡数据推算多元汽液平衡关系的途径,以此对6种3元部分互溶体系汽液平衡关系进行的推算均达到了较满意的拟合精度。
Because the NRTL equation is suitable for the calculation of liquid-liquid equilibrium and vapor-liquid equilibrium, the NRTL equation parameters can be obtained from the measured binary liquid-liquid equilibrium mutual solubility data below the azeotropic temperature, and then the vapor-liquid equilibrium of the multicomponent mutual-solubility system . Overcomes the difficulty of accurately determining the vapor-liquid equilibrium data of the 2-part mutual-solubilization system and provides a way to calculate the multiple vapor-liquid equilibrium relationship from the 2-element equilibrium data, so as to conduct the vapor-liquid equilibrium relationship of the 6 3-element partial solubilization systems The estimates have reached a more satisfactory fitting accuracy.