文献类型：期刊文献

英文题名：Separation of Ternary System 1,2-Ethanediol + 1,3-Propanediol + 1,4-Butanediol by Liquid-Only Transfer Dividing Wall Column

作者：Wu, Yan-Yang[1]; Song, Zhong-Wen[1]; Rao, Jia-Bo[1]; Yao, Yu-Xian[1]; Wu, Bin[1]; Chen, Kui[1]; Ji, Li-Jun[1]

机构：[1] School of Chemical Engineering, East China University of Science & Technology, Shanghai, 200237, China

年份：2023

卷号：11

期号：11

外文期刊名：Processes

收录：EI(收录号：20241215785145)

语种：英文

外文关键词：Distillation columns - Phase equilibria - Ternary systems

摘要：This study focuses on separating a mixture consisting of 1,2-ethanediol (1,2-ED), 1,3-propanediol (1,3-PD), and 1,4-butanediol (1,4-BD). Vapor–liquid equilibrium (VLE) data for 1,2-ED + 1,4-BD and 1,3-PD + 1,4-BD are determined at 101.3 kPa using a modified Rose equilibrium still. The consistency of the VLE data is checked with both Redlich–Kister and Fredenslund tests. The VLE data are fitted by the Wilson, NRTL, and UNIQUAC activity coefficient models. All three models can effectively correlate the VLE data. Then, the separation of the mixture is designed with the NRTL model and its correlated binary interaction parameters. A liquid-only transfer dividing wall column (LDWC) is investigated on the basis of a direct conventional distillation sequence (DCDS). For a fair comparison, both DCDS and LDWC are optimized to minimize total annual cost using sequential iterative optimization procedures. After optimization, LDWC exhibits a 16.87% reduction in total annual cost, while cooling and heating utility consumptions are reduced by 28.40% and 19.24% compared to DCDS. ? 2023 by the authors.