高压氮气在正庚烷中溶解度的数学模型  

Mathematical Model of Solubility of High Pressure Nitrogen in Heptane

作　　者：陈文[1] 王存文[1] 应卫勇[2] 金亚利[1] 吴元欣[1] 鲁丰乐[2] 

机构地区：[1]武汉工程大学湖北省新型反应器与绿色化工工艺重点实验室,湖北武汉430073 [2]华东理工大学化工学院,上海200237

出　　处：《化工时刊》2007年第1期3-5,共3页Chemical Industry Times

基　　金：湖北省教育厅优秀中青年创新团队基金资助项目(2003)

摘　　要：采用R—K状态方程和正规溶液理论推导出高压氮气在正庚烷中的溶解度模型为lnX=lnP＋B1P＋B2P^2＋B3，并通过实验测定了其理论模型参数分别为：B1=-2．64＋8．92×10^-3T-5．06×10^-6T^2，B2=3．61×10^-2＋6．91×10^-4T-2．18×10^-6T2，B3=3．92-3．92×10^-2T＋5．20×10^-5T^2；在温度0-100℃与压力0—12MPa范围内，经实验验证该模型计算值与实测数据平均相对偏差为-3．6％，因此该模型可以作为高压氮气在正庚烷中溶解度的适宜计算公式。By the regular - solution theory and the Redich - Kuong equation of state, the mathematical model of solubility of high pressure nitrogen in heptane was deduced, which was ln X = ln P ＋ B 1 P ＋ B2 P^2＋ B3, and the model parameters were B1 = -2.64＋8.92× 10^-3T-5.06× 10^-6T^2,B2=3.61 × 10^-2 ＋6.91× 10^-4T-2.18×10^-6T^2,B3 =3.92 - 3.92 × 10^-2 T ＋ 5.20 × 10^-5 T2 .The results of the experiment showed that the average deviation of the caculated value by the mathematical model of solubility and the determined value was - 3.6% when the temperature was 0 - 100℃ and the pressure was 0 - 12 MPa,so the mathematical model was an feasible equation to calculate the solubility of high pressure nitrogen in heptane.

关 键 词：高压氮气 正庚烷 溶解度 数学模型 

分 类 号：O621.21[理学—有机化学]