状态方程-ASOG基团混合规则推算高压汽液平衡  

Prediction of High Pressure Vapor-Liquid Equilibria by Equation of State with Mixing Rules Using ASOG Group Contribution Method

作　　者：杨锡好 姚振卫[2] 

机构地区：[1]大连理工大学 [2]北京燕山石油化工公司研究院

出　　处：《大连理工大学学报》1989年第3期277-282,共6页Journal of Dalian University of Technology

摘　　要：采用 ＡＳＯＧ（Ａｎａｌｙｔｉｃａｌ Ｓｏｌｕｔｉｏｎｓ ｏｆＧｒｏｕｐｓ）基团作用法新的混合规则， 表达 Ｐｅｎｇ－Ｒｏｂｉｎｓｏｎ状态方程中混合能量参数“α”；回归确定出氧－二氧化碳基团对 参数，并对温度范围为 ２００～３００ Ｋ 的 Ｏ２－ＣＯ２物系高压汽液平衡进行了关联计 算，除靠近临界点外，计算值与实验值的一致性相当好。关联结果表明：ＰＲ－ＡＳＯＧ 方程的精度优于A method for predicting high pressure VLE is presented by the PR-ASOG equation of state, in which mixture energy parameter 'α' is given by using the ASOG group contribution method. The results indicate that group contribution technique is capable of calculating equation of state parameters for mixtures and excellent prediction accuracy is obtained for the oxygen and carbon dioxide systems in the temperature range from 200 to 300 K at elevated pressure up to 13 MPa. The deviations in p and y obtained by the PR-ASOG equation are obviously less than those by the PR equation with conventional mixing rules.

关 键 词：汽液平衡 状态方程 基团混合规则 

分 类 号：TQ013.1[化学工程]