辽河原油常压汽液平衡CORGC状态方程的预测  

PREDICTION OF VLE FOR THE LIAOHE PETROLEUM FRACTION BELOW 350℃ WITH CORGC-EOS

作　　者：陈泽辉[1] 陈振平[1] 富嘉文[1] 寿德清[1] 张建伟 

机构地区：[1]石油大学炼制系

出　　处：《石油大学学报（自然科学版）》1995年第2期75-79,共5页Journal of the University of Petroleum,China(Edition of Natural Science)

摘　　要：应用ＣＯＲＧＣ状态方程，根据正构烷烃模型分子法确定石油假组分的基团组成，仅需平均沸点一个物性多数，即可按假多元系法预测汽液相平衡常数和体系的泡点、露点温度．结果表明，预测精度与ＡＰＩ推荐的ＳＲＫ状态方程相当．The chain-of-rotators group contribution equation of state (CORGC─EOS) isapplied to predict the VLE for the petroleum fraction(<350℃)from Liaohe crude oil. Thegroup composition of a pseudocomponent molecule is calculated by the normal paraffin modelmolecule method. This calculation only needs one physical parameter(average boilingpoint),The predicted bubble point and dew point temperatares are compared with theequilibrium system temperatures.The average relative errors of prediction are 2. 76%and0. 84%. The computation results are comparable to those of SRK-EOS.

关 键 词：石油馏分 状态方程 汽液平衡 预测 

分 类 号：TE622.8[石油与天然气工程—油气加工工程]