哌嗪-N-乙基哌嗪体系和水-N-乙基哌嗪体系汽液平衡的研究  

Study of Vapor-Liquid Equilibrium on Piperazine-N-Ethylpiperazine and Water-N-Ethylpiperazine Binary System

作　　者：顾飞燕[1] 

机构地区：[1]浙江大学材料和化工学院,浙江杭州310027

出　　处：《高校化学工程学报》2000年第3期281-284,共4页Journal of Chemical Engineering of Chinese Universities

摘　　要：本文实测N－乙基哌嗪的饱和蒸汽压以及用改进Rose釜测定水－N－乙基哌嗪体系在101．3kPa下汽液平衡。实测数据符合热力学一致性，并采用Wilson方程关联获得满意的结果。另外，用修正的UNIFAC模型预测哌嗪－N－乙基哌嗪与水－N－乙基哌嗪两个体系恒压（101．3kPa）汽液平衡，为化工设计提供基础数据。N-ethylpiperazine (NEP) is an important intermediate in the synthesis of drugs and dyes. Its fundamental data are lacking. The saturated vapor pressure of NEP and the VLE data for water-NEP system at pressure of 101.3 una have been measured by using an improved Rose still. The VLE data have been tested for thermodynamics consistency and correlated satisfactorily with Wilson equation. The average absolute deviations are △T= 0.14K, △y1, = 0.0022. The VLE for piperazine(1)-NEP(2) system at 101.3 kPa has been predicted by using modified UNIFAC model (Ⅰ) and modified UNIFAC model (Ⅱ).

关 键 词：汽液平衡 N-乙基哌嗪 哌嗪 水 分离 

分 类 号：TQ254.15[化学工程—有机化工] TQ028.3