PC-SAFT理论对CO_2-甲醇体系相平衡的研究  

Research in Phase Equilibrium for CO_2-methanol Binary System with Theory of PC-SAFT

作　　者：杨传[1] 付东[1] 

机构地区：[1]华北电力大学环境科学与工程学院

出　　处：《石油与天然气化工》2010年第4期273-276,287,共5页Chemical engineering of oil & gas

基　　金：国家自然科学基金(No.20606009);教育部新世纪优秀人才支持计划(No.06-0206)资助项目

摘　　要：本文结合统计缔合流体理论(PC-SAFT),把纯流体关联而得的分子参数作为输入,对某一确定温度范围内二氧化碳-甲醇二元体系相平衡进行研究,并且分析温度、压力和两相密度对界面性质的影响,并对PC-SAFT方程计算结果与实验数据进行了比较与分析。In this paper, combined with statistical associating fluid theory (PC-SAFT), the phase equilibrium of supercritical carbon dioxide-methanol and carbon dioxide-ethanol binary systems in the determined range of temperatures are calculated by the molecular parameters as an input derived from the simulated pure fluids. Then the impact of temperature, pressure and two-phase density on the interfacial properties are analyzed. Finally, the calculated results of PC-SAFT equation with the experimental data are com-pared and analyzed.

关 键 词：PC-SAFT 二氧化碳-甲醇 相平衡 

分 类 号：TQ013.1[化学工程]