摘要
以辽河原油小于３５０℃馏分油实测常压汽液平衡数据为依据，选用ＡＰＩ推荐的ＳＲＫ状态方程，按假多元系法进行了相平衡常数和体系泡、露点温度的计算．重点考察了六种不同临界参数关联式匹配方案对预测效果的影响，结果表明，用方案四预测露点温度效果最好，平均绝对偏差３．４８Ｋ，平均相对偏差０．６８％，可用于工程计算．
The SRKequation of state is applied to predict the vapor-liquid equilibria(VLE)of the petroleum fraction(<350℃)from Liaohe crude oil.The effects of differentcorrelations for calculating the critical temperature,critical pressure and the vapor pressurefunction on the VLE prediction are investigated.Comparisions of SRK calculation resultswith experimental data are presented for the equilibrium constant K-values of the pseudo-components,the bubble and dew point temperatures.
出处
《石油大学学报（自然科学版）》
CSCD
1995年第1期76-80,共5页
Journal of the University of Petroleum,China(Edition of Natural Science)
关键词
石油馏分
汽液平衡
状态方程
Petroleum fraction
Vapor-liquid equilibria
Equation of state
Predic-tion:Liaohe crude oil.
