摘要
通过较严格的数学处理,导得了气相色谱法测定稀溶液汽液平衡的基本方程,证明了现有两个模型只是本模型的特例,将最近提出的稀溶液活度系数模型引入基本方程中,得到了简单易用的工作方程,克服了原同类方程难以处理的困难;计算结果表明,浓度越高,本文模型的修正越重要。最后,还导得色谱柱内气相流速的较严格的计算公式。
Based on the strict mathematical deduction, a fundamental equation is proposed for the gas chromatographic measurement of vapor liquid equilibrium of dilute solutions. This equation reduces to the two equations proposed by other authors in special cases. Then an activity coefficient model for dilute solutions is applied and a very simple working equation is obtained. The calculation results show that our model is more applicable for denser concentrations than the others. Finally a modified equation for the gas velosity in G C column is proposed for the measurement under denser coneetrations.
关键词
稀溶液
汽液平衡
溶液
气相色谱
Vapor liquid equilibrium, dilute solutions, G C measurement, mathematical model.
