摘要
本文提出了多元缔合体系汽-液相平衡的热力学模型,并用其计算了缔合体系水-甲酸-乙酸、水-乙酸-丙酸、水-甲酸-丙酸及甲酸-乙酸-丙酸在760mmHg下的实验液相活度系数。活度系数的计算值由Wilson方程或McCann方程给出。由相应二元体系的汽-液相平衡数据对三元体系的沸点及汽相组成进行了预测。结果表明,预测值能较好地同实验数据相吻合。
A thermodynamic model is proposed for VLE of Ternary associating systems and has been applied to the experimental liquid activity coefficients in associating systems for water-formic acid-acetic acid, water-acetic acid-propionic acid, water-formic acid-propionic acid and formic acid-acetic acid-propionic acid at 760 mmHg. The calculated activity coefficients are correlated using Wilson equation or McCann equation.Boiling points and vapour compositions of ternary systems are predicted with the VLE data of the relative binary systems. The results show that the predicted values are in good agreement with the experimental data.
出处
《化学工程》
CAS
CSCD
北大核心
1989年第2期63-68,共6页
Chemical Engineering(China)
