正交设计优化分壁式萃取精馏分离乙酸异丙酯-异丙醇的模拟研究  

Simulation study on using orthogonal design to optimize extractive distillation separation of isopropyl acetate-isopropanol in dividing wall column

作　　者：马春蕾 翟丽军 MA Chun-lei;ZHAI Li-jun(Department of Chemistry and Chemical Engineering, Taiyuan Institute of Technology, Taiyuan 030008, Chin)

机构地区：[1]太原工业学院化学与化工系,山西太原030008

出　　处：《现代化工》2018年第6期202-205,共4页Modern Chemical Industry

摘　　要：利用Aspen Plus模拟软件,以DMSO为萃取剂,采用分壁式萃取精馏对乙酸异丙酯和异丙醇共沸物进行分离模拟研究,采用正交设计对灵敏度分析结果进行进一步优化,得到乙酸异丙酯和异丙醇质量分数分别为99.44%和99.34%,回收萃取剂质量分数99.99%。分壁式萃取精馏过程相比于常规双塔萃取精馏再沸器热负荷降低7.74%,冷凝器热负荷降低22.81%,实现了有效节能。Aspen Plus simulation software is used to simulate the separation process of isopropyl acetate-isopropanol azeotrope by extractive distillation in a dividing wall column（ E-DWC）,with DMSO as extractant. The model sensitivity analysis results are further optimized by orthogonal design. The mass fractions of isopropyl acetate and isopropanol can reach 99. 44% and 99. 34%,respectively and the mass fraction of recovered extractant can reach 99. 99%.In comparison with extractive distillation in conventional double-column,the heat load of reboiler and condenser by E-DWC are 7. 74%and 22. 81% lower,respectively.Energy saving is realized effectively.

关 键 词：乙酸异丙酯 异丙醇 ASPEN Plus 分壁式萃取精馏 

分 类 号：TQ028.3[化学工程]