Simulation and optimization for recovery of isopropyl acetate and methanol from industrial waste liquid
LIU Yan-jie, ZHANG Kun, WANG Li-min, DAI Chuan-bo
Jilin Provincial Laboratory of Chemical Separation Technology and Energy-Saving Engineering, Jilin Institute of Chemical Technology, Jilin 132022, China
Abstract: Based on the characteristics analysis on the isopropyl acetate-methanol azeotropic system,the heat integration pressure swing distillation technology is proposed to separate isopropyl acetate-methanol mixtures.The optimum simulation is performed by using the RadFrac pattern of Aspen Plus,aiming at minimizing the energy consumption at fixed purities of isopropyl acetate and methanol.The optimal process parameters such as the total number of theoretical plate,feeding position and reflux ratio are specified by using optimizing analysis tools.Under the optimal parameters,the isopropyl acetate and methanol products both with a mass fraction of more than 0.998 can be obtained,and the yields can exceed 99.9%.Compared with traditional pressure swing distillation process,the heat integration pressure swing distillation process can save energy by 41.05% via using the gas phase potential heat at the top of the high pressure tower as the heat source for the reboiler of the atmospheric pressure tower.
刘艳杰, 张昆, 王丽敏, 戴传波. 工业废液醋酸异丙酯-甲醇回收工艺模拟与优化[J]. 现代化工, 2018, 38(1): 192-195.
LIU Yan-jie, ZHANG Kun, WANG Li-min, DAI Chuan-bo. Simulation and optimization for recovery of isopropyl acetate and methanol from industrial waste liquid. Modern Chemical Industry, 2018, 38(1): 192-195.
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