化学工程2012，Vol.40Issue(7)：14-17,25,5.DOI:10.3969/j.issn.1005-9954.2012.07.004
萃取精馏分离碳酸二甲酯和甲醇共沸物
Separation of dimethyl carbonate-methanol mixture by extractive distillation
摘要
Abstract
Based on VLE experiments and Aspen Plus software, the feasibility of separation of dimethyl carbonate-methanol mixture by extractive distillation was researched. The results show that the relative volatility of the system can he increased with glycol as solvent. And the phase equilibrium of mixture in extractive distillation process can be described by UNIFAC model. The influences of the position of feed-stage, solvent ratio, reflux ratio and the feed-stage of solvent on the extractive distillation were studied. The optimal conditions of separation in all experiments were obtained as follows: the number of theoretical plates is 30, feed stage is 20, solvent feed stage is 3, solvent ratio is 1. 5 and reflux ratio is 2. The reliability of simulation was testified by ihe comparison of experiment data and simulation data.关键词
碳酸二甲酯和甲醇混合物/乙二醇/萃取精馏/模拟/Aspen PlusKey words
dimethyl carbonate-methanol mixture/ glycol/ extractive distillation/ simulation/ Aspen Plus分类
化学化工引用本文复制引用
李文秀,连利燕,张志刚,贾庆波,刘雷..萃取精馏分离碳酸二甲酯和甲醇共沸物[J].化学工程,2012,40(7):14-17,25,5.基金项目
国家自然科学基金资助项目(21076126) （21076126）
