石油化工2025，Vol.54Issue(7)：929-936,8.DOI:10.3969/j.issn.1000-8144.2025.07.004
隔壁萃取精馏塔不同等效模型分离异丁醇-乙酸异丁酯共沸物体系的模拟优化
Simulation and optimization of isobutanol-isobutyl acetate azeotrope separation with different equivalent models of extractive distillation dividing wall column
摘要
Abstract
To address the separation of the isobutanol(IBA)-isobutyl acetate(IBAc)azeotrope in the synthesis of IBAC via IBA esterification,N,N-dimethylacetamide was used as an extractant,and the separation of the IBA-IBAc azeotrope was simulated by means of Aspen Plus simulation software using two-and three-tower equivalent models of extractive distillation dividing wall column(EDWC),as well as a conventional extractive distillation model.By taking the lowest total annual cost(TAC)as the objective function,the above model parameters were globally optimized,and the optimal operating parameters for each model were determined under the premise that the molar fraction and recovery rate of IBAC and IBA were not less than 99.3%.The results show that both the two-tower equivalent and three-tower equivalent models of EDWC can be used to simulate the separation of the IBA-IBAc azeotrope.Specifically,the two-tower equivalent model exhibits the lowest energy consumption and TAC.Compared to conventional extractive distillation,this system reduces the TAC by 11.36%,which is more suitable for the separation of the IBA-IBAc azeotrope.关键词
异丁醇/乙酸异丁酯/隔壁塔/萃取精馏/年度总成本Key words
isobutanol/isobutyl acetate/dividing wall column/extractive distillation/total annual cost分类
化学化工引用本文复制引用
邵圣娟,张云凤,李晓红,张毅恒,焦纬洲..隔壁萃取精馏塔不同等效模型分离异丁醇-乙酸异丁酯共沸物体系的模拟优化[J].石油化工,2025,54(7):929-936,8.基金项目
太原工业学院引进人才科研资助项目(2023KJ014). （2023KJ014）
