乙酸乙酯-碳酸二乙酯二元体系平衡数据的测定及模拟  

Measurement and simulation for vapor-liquid equilibrium of ethyl acetate-diethyl carbonate binary system

作　　者：徐明[1] 刘定华[1] 刘晓勤[1] 

机构地区：[1]南京工业大学化学化工学院材料化学工程国家重点实验室,江苏南京210009

出　　处：《化学工程》2012年第11期31-34,共4页Chemical Engineering(China)

基　　金：国家自然科学基金资助项目(20976082)

摘　　要：采用改进型ROSE汽液平衡釜在100.47 kPa下测定乙酸乙酯(EA)-碳酸二乙酯(DEC)二元体系的汽液平衡数据,进一步得到的液相活度系数,经面积积分法检验符合热力学一致性。并借助化工过程模拟软件,同时采用NRTL和Wilson方程对实验数据进行关联得到模型参数,回归出不同模型下汽相组成与实验中的数据进行比较,平均偏差分别为0.007 8和0.006 8,结果表明2种模型都符合需要。研究结果将为有关工程设计提供化工数据。Vapor-liquid equilibrium （ VLE ） data of ethyl acetate （ EA ） -diethyl carbonate （ DEC ） binary system were determined by using an improved Rose VLE caldron at 100.47 kPa. The obtained data of liquid activity coefficients were checked by Herington method, and the results show that the experimental data satisfy the examination of the thermodynamic consistencies. The VLE data were correlated by using chemical engineering analogue software Aspen Plus with the Wilson or NRTL mode, and the regressive vapor compositions under the different modes were compared with the corresponding experimental data, with the average deviations of 0. 007 8 and 0. 006 8 respectively. The result indicates that the two modes are suitable. These data can be used for relevant chemical engineering design.

关 键 词：碳酸二乙酯 乙酸乙酯 汽液平衡 

分 类 号：TQ013.1[化学工程]