Abstract: Ethyl acetate and butanone azeotrope system is separated by extractive distillation.Ethylene glycol is selected as the solvent and Aspen Plus software is used to simulate the process.The effects of the feed amount of solvent,the number of column plates,reflux ratio,feed position and other parameters on product purity and heat load are analyzed.It is found from simulation that ethyl acetate with a purity of 99.91% and butanone with a purity of 99.60% can be obtained when the feed amount of ethylene glycol is 500 kg·h-1,the number of plates is 30,the mass reflux ratio is 0.45,raw materials are fed at the 17th plate and solvent is fed at the 5th plate for extractive distillation column;the number of plates is 10,the mass reflux ratio is 0.5 and the feed position is at the 4th plate for the solvent recovery tower.The extractive distillation process is verified by a batch extractive distillation experiment.It is found that 98% ethyl acetate can be obtained at the top of the extractive distillation column,proving the reliability of the simulation results.
李朋广, 刘欣然, 高瑞昶. 萃取精馏分离乙酸乙酯和丁酮的研究[J]. 现代化工, 2019, 39(6): 219-223.
LI Peng-guang, LIU Xin-ran, GAO Rui-chang. Separation of ethyl acetate and butanone by extractive distillation. Modern Chemical Industry, 2019, 39(6): 219-223.
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