摘要
利用共沸点数据，这用计算机编程，采用ＥＯＳ＋ｒ法分别用Ｗｉｌｓｏｎ，ＮＲＴＬ和ＵＮＩＦＡＣ方程计算 了碳酸二甲酯－甲醇二元体系在常压和加压下的汽液平衡。三种不同模型的计算结果与实验值都较为吻合， 其中以ＵＮＩＦＡＣ方程的拟合结果为最好。
Boiling point and azeotropic data were used to predict critical parameter of dimethyl carbonate. Therefore several physical-chemical properities of dimethyl carbonate were estimated. The binary (dimetyl carbonate-methanol) system vapor liquid equilibrium in normal pressure and high pressure was predicted using Wilson equation, NRTL equation and UNIFAC medel re- specitively. The calculated results of three different models are in perfect agreement with experiment data. The ca1culated results of UNIFAC equation is the best in several models. So the results can be used for Chemical engineering calculation.
基金
浙江省教育厅科技基金项目(981134).
关键词
碳酸二甲酯
甲醇
汽液平衡
计算
共沸点数据
dimethyl carbonate
methanol
azeotrope
vapor-Liquid equilibrium calculation
