高校化学工程学报2026，Vol.40Issue(3)：454-465,12.DOI:10.3969/j.issn.1003-9015.2025.00.067
热集成及热泵强化低共熔溶剂萃取精馏分离异丙醇-水
Heat integration and heat pump intensified extractive distillation for isopropanol-water separation using deep eutectic solvents as entrainer
摘要
Abstract
As a new type of environment-friendly solvent,deep eutectic solvents(DESs)have great potential in extractive distillation.In this study,the separation of isopropanol and water by extractive distillation using DESs(ChCl/TEG,molar ratio was 1∶3)as entrainer was designed and optimized by Aspen Plus.Targeting minimization of total annual cost(TAC),sequential iterative optimization was applied to key variables including feed stage location,entrainer flow rate,entrainer temperature,number of theoretical stages,and reflux ratio.Compared with the process using traditional solvent ethylene glycol(EG)as entrainer,the proposed process required significantly fewer theoretical stages and lower reflux ratio,reducing TAC by 20.95%.To achieve further energy saving,two processes combined with heat integration and heat pump were established.A comprehensive comparative analysis demonstrated that the heat integration and heat pump intensified extractive distillation process achieves significant reductions of 46.35%in energy consumption,31.10%in TAC,and 39.33%in exergy loss compared to the conventional process using EG as the solvent.The results indicate that DESs exhibit considerable potential to replace conventional solvents due to their superior economic and environmental benefits.关键词
低共熔溶剂/萃取精馏/异丙醇-水/热集成/热泵Key words
deep eutectic solvents/extractive distillation/isopropanol-water/heat integration/heat pump分类
化学化工引用本文复制引用
王菊,许洁,杜春华,吴现力..热集成及热泵强化低共熔溶剂萃取精馏分离异丙醇-水[J].高校化学工程学报,2026,40(3):454-465,12.基金项目
国家自然科学基金(21706142) （21706142）
山东省自然科学基金(ZR2025MS250) （ZR2025MS250）
青岛农业大学高层次人才科研基金(6631114316,6631116020). （6631114316,6631116020）
