碳酸二甲酯和乙醇酯交换体系气液平衡数据测定与关联  

MEASUREMENT AND CORRELATION OF VAPOR-LIQUID EQUILIBRIA DATA FOR TRANSESTERIFICATION OF DIMETHYL CARBONATE AND ETHANOL

作　　者：岳昌海 黄益平 倪泽雨 吴丹 黄晶晶 王雨晨 Yue Changhai;Huang Yiping;Ni Zeyu;Wu Dan;Huang Jingjing;Wang Yuchen(China Construction Industrial&Energy Engineering Group Co.,Ltd.,Nanjing 210023,Jiangsu,China)

机构地区：[1]中建安装集团有限公司,江苏南京210046

出　　处：《精细石油化工》2023年第5期70-76,共7页Speciality Petrochemicals

摘　　要：采用CE-2型气液双循环平衡釜,测定了常压下(101.3 kPa)下碳酸二甲酯和乙醇酯交换体系中碳酸二甲酯、乙醇、碳酸甲乙酯、碳酸二乙酯和甲醇等10组二元气液平衡数据,二元气液平衡数据经Herington面积检验法检验,符合热力学一致性。用Wilson和NRTL液相活度系数方程对10组二元体系的气液平衡数据进行关联,由关联得到模型参数估算对应的二元体系的气液平衡数据,并与实验测得数据对比,碳酸二甲酯、乙醇、碳酸甲乙酯、碳酸二乙酯和甲醇气相摩尔分率平均绝对偏差均小于0.0107,温度平均绝对偏差均小于0.3688 K。The vapor-liquid equilibrium(VLE)data of dimethyl carbonate,ethanol,methyl ethyl carbonate,diethyl carbonate and methanol in the transesterification reaction system of dimethyl carbonate and ethanol were determined in an CE-2 equilibrium at atmospheric pressure(101.3 kPa).The experimental data of the binary system was verified by Herington method,and the experimental data is consistent with thermodynamics.The experimental VLE data were correlated with the Wilson and NRTL activity coefficient models.The ten models were well correlated with VLE data and the interaction parameters were obtained.Compared with experimental data,the mean absolute error of mole fractions and temperatures for dimethyl carbonate,ethanol,methyl ethyl carbonate,diethyl carbonate and methanol are less than 0.0107 and 0.3688 K,respectively.The results indicated that the vapor phase mole fraction and boiling temperature calculated by the Wilson and NRTL models are in good agreement with experimental data.

关 键 词：碳酸二甲酯 乙醇 酯交换 气液平衡 测定与关联 

分 类 号：O621.256.4[理学—有机化学]