液态正烷烃pVT关系的计算

Calculation of pVT for the liquid normal paraffin

分别用链状流体状态方程和 Tait方程计算了碳原子数为 1 1～ 44的正烷烃液态的比体积 ,同时还得到了链状流体状态方程中模型参数与碳原子数关系的经验方程 .结果表明 ,所用方程均能满意关联液态正烷烃p VT关系并可用本文的经验公式计算其它烷烃的比体积 .

The specific volume of the liquid normal paraffin C 11 H 24 ~C 44 H 90 was calculated by using the equation of state containing chainlike liquids and Tait equation,respectively.Empirical equation about relationship between model parameters and the number of carbon atoms was obtained for the equation of state containing chainlike liquids.It is shown that the selected equations can be used to correlate the liquid pVT of normal paraffin and the calculation accuracy is satisfactory. On the other hand,the established empirical equation can be used to predict the specific volume of the liquid normal paraffin.