二氧化碳与正丁醇、异丁醇二元体系高压相平衡研究  

HIGH PRESSURE VAPOR-LIQUID PHASE EQUILIBRIUM FOR CARBON DIOXIDE-N-BUTANOL AND CARBON DIOXIDE-I-BUTANOL

作　　者：云志[1] 史美仁[1] 时钧[1] 

机构地区：[1]南京化工学院化学工程系

出　　处：《燃料化学学报》1996年第1期87-92,共6页Journal of Fuel Chemistry and Technology

摘　　要：使用自行设计的两相交替循环式高压实验装置，测定了ＣＯ_２－正丁醇和ＣＯ_２－异丁醇两个二元体系的相平衡数据，温度范围分别为３１３．２Ｋ～３３３．２Ｋ和２９８．２Ｋ～３２８．２Ｋ。压力范围是０．６ＭＰａ左右到各体系的临界点附近。测定结果用ＰＲＳＶⅡ方程结合两参数混合规则进行了关联，在压力大于２ＭＰａ的区域里，取得了较满意的结果。Vapor-liquid phase equilibria were measured for carbon dioxide-n-butanol system at temperatures 313.2K、323.2K and 333.2K, and for carbon dioxide-i-butanl system at 298. 2K、313. 2K and 328. 2K, The pressure range from about 0.6MPa up to near the system critical pressure. Experimental data were correlated by use of the PRSV Ⅱequation of state with two parameter mixing rule,Results show that the calculated values are well consistent with the experimentals for the pressure larger than 2MPa. At the pressure less than 2MPa,the calculated CO_2 mole fractions in vapor phase appear to be larger than the experimentals.The correlation parameters used in the mixing rule for the PRSVⅡequation of state are also reported in the paper.

关 键 词：相平衡 二氧化碳 正丁醇 异丁醇 高压 

分 类 号：O642.42[理学—物理化学]