基于SRK方程混合规则修正的烃类混合物相平衡计算研究  

Equilibrium Mixture of Hydrocarbons Based on the Modified SRK Equation Calculation of Mixing Rules

作　　者：田园[1] 李宏欢 王青柳[3] 吴睿[1] 

机构地区：[1]重庆科技学院石油工程学院油气储运系,重庆401331 [2]中国石油化工股份有限公司天然气分公司,北京100120 [3]西南油气田分公司输气管理处,四川成都610213

出　　处：《广州化工》2014年第13期19-20,31,共3页GuangZhou Chemical Industry

基　　金：重庆市科委自然科学基金计划资助项目(编号:cstcjjA90020)

摘　　要：为改进SRK方程对烃类混合物相平衡计算的准确性,采用修正方程中系数计算的混合规则,在分析众多混合规则的基础上,采用SR混合规则来计算SRK方程中的系数,基于-型相平衡模型,应用Newton-Raphson迭代算法计算求解,并将计算结果与现场实测数据进行对比分析,结果表明,采用SR混合规则后的SRK状态方程对烃类混合物的相平衡预测精度高,验证了方法的有效性,并且通过计算发现该方法不适合混合物中H2S等酸性气体的相平衡数据计算。In order to improve the accuracy of SRK equation to calculate equilibrium mixture of hydrocarbons , using the hybrid rules modified equation coefficients calculated in the analysis of a number of hybrid rules , based on the use of SR mixing rule , the SRK equation coefficients were calculated based on type equilibrium model , with Newton-Raphson iterative algorithm to solve .The results were compared with field data analysis , the results showed that high prediction accuracy SRK equation of state of equilibrium SR mixing rules adopted after the mixture of hydrocarbons verified effectiveness of the method , and the method by calculating the discovery phase equilibrium data was not suitable mixture of acid gases such as H 2 S calculated.

关 键 词：混合规则 相平衡 数值计算 状态方程 

分 类 号：TE832[石油与天然气工程—油气储运工程]