离子液体在乙酸乙酯-乙醇-水体系分离中应用  

Application of Ionic Liquids in the Separation ofEthyl Acetate Ethanol Water System

作　　者：李成帅 王广友 Li Chengshuai;Wang Guangyou(Shandong Institute of Pesticide Science,Jinan 250033,China)

机构地区：[1]山东省农药科学研究院,山东济南250033

出　　处：《山东化工》2024年第12期21-25,共5页Shandong Chemical Industry

摘　　要：乙酸乙酯、乙醇和水是化工行业中常见的共沸体系。分别以乙二醇、氯化1-己基-3-甲基咪唑离子液体为萃取剂,用Aspen Plus模拟乙酸乙酯、乙醇和水形成的共沸体系的分离。使用Sensitivity分析对上述流程分别进行参数优化。结果表明:乙二醇和离子液体做萃取剂时,乙酸乙酯、乙醇和水的纯度都可以达到99.0%以上;与乙二醇萃取精馏工艺相比,离子液体使用量降低91%,极大降低了成本;使用离子液体能有效降低能耗和费用,能耗降低31.2%,年度费用降低26.9%。Ethyl acetate,ethanol and water are common azeotrope systems in the chemical industry.Through designing extractive distillation,the separation of ethyl acetate,ethanol and water azetrope is simulated with ethylene glycol/1-hexyl-3-methylimidazole chloride ionic liquid as extraction agent,respectively.Sensitivity analysis is used to optimize the operation parameters of the extractive distillation processes.The results indicate that the purities of ethyl acetate,ethanol and water are all above 99.0%.The amount of extraction agent can save 94%,decline energy consumption by 31.2%,and total annual cost reduce 26.9%.The process using ionic liquid is the optimal process.

关 键 词：乙二醇 离子液体 萃取精馏 共沸物 Aspen Plus 

分 类 号：TQ028[化学工程]