摘要
通过实验对萃取精馏分离乙酸乙酯 乙醇共沸体系的溶剂选择进行了研究 .结果表明 ,二元混合溶剂(N ,N 二甲基甲酰胺 +二甲亚砜 )的分离性能优于单一溶剂 (N ,N 二甲基甲酰胺或二甲亚砜 ) .运用修正UNIFAC模型对实验数据进行了关联 ,发现修正UNIFAC模型预测法和实验法相结合是一种快速有效的萃取精馏溶剂选择方法 .
A number of solvents for separation of ethyl acetate-ethanol were examined in a VLE experiment apparatus.The integrated properties of the solvents were investigated and the experimental data were correlated with the modified UNIFAC model. It was found from the results that binary mixed solvents (DMSO+DMF) were superior to single solvent (DMSO or DMF) for separating ethyl acetate-ethanol by extractive distillation.The modified UNIFAC model combined with experiments is a rapid,accurate approach to selecting the solvent for extractive distillation.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2004年第2期226-230,共5页
CIESC Journal
