高校化学工程学报2011，Vol.25Issue(4)：554-558,5.
26.67kPa下醋酸-水-N-甲基吡咯烷酮体系汽液相平衡的研究
Vapor-Liquid Equilibria of Acetic Acid-Water-N-Methylpyrrolidone System at 26.67kPa
摘要
Abstract
The isobaric vapour-liquid equilibrium (VLE) data of two binary systems (acetic acid-N-methylpyrrolidone (NMP)system and water-NMP system) and a ternary system (acetic acid-water-NMP) were measured at the pressure of 26.6 kPa by using an improved Rose equilibrium still, and the VLE data of water-acidic acid system from literature were applied. The thermodynamic consistency of the obtained VLE data was examined by the Herington area test and the point to point method. The association of acetic acid in vapour phase was considered, and the nonideality of the vapour phase was corrected by the chemical theory and Hayden-O'connell method. Moreover, the VLE data of above three binary systems were correlated by the NRTL model, the deviation of the correlation and the model parameters for above binary systems were obtained. Then the obtained NRTL model parameters were used to predict the VLE data of the mentioned ternary system, and it was found that the temperature average absolute deviation of the prediction is 1.36 K and the average absolute deviations in vapour-phase mole fraction of water and acetic acid are 0.0102 and 0.0072, respectively.关键词
醋酸/N-甲基吡咯烷酮(NMP)/水/汽液相平衡(VLE)Key words
acetic acid/N-methylpyrrolidone (NMP)/ water/ vapor-liquid equilibrium(VLE)分类
化学化工引用本文复制引用
平丽娟,彭勇,毛建卫..26.67kPa下醋酸-水-N-甲基吡咯烷酮体系汽液相平衡的研究[J].高校化学工程学报,2011,25(4):554-558,5.基金项目
浙江省科技计划项目(2006c31037). （2006c31037）
