高校化学工程学报2024，Vol.38Issue(2)：172-183,12.DOI:10.3969/j.issn.1003-9015.2024.02.002
乙酸+异丙醇酯化体系中汽液平衡测定及萃取精馏
Determination of vapor-liquid equilibrium of the acetic acid + isopropanol esterification system and extractive distillation
摘要
Abstract
Vapor-liquid equilibrium data plays an important role in azeotrope separation.To solve the problem of azeotrope separation in acetic acid + isopropanol esterification reaction system,the vapor-liquid equilibrium data of acetic acid + isopropanol +isopropyl acetate,acetic acid + isopropanol + water,acetic acid + isopropyl acetate + water,and isopropanol + isopropyl acetate + water were determined by Dvorak-Boublik equilibrium kettle.Thermodynamic consistency test and NRTL(nonrandom two-liquid)model correlation were performed on the experimental data.The feasibility of azeotrope separation was analyzed by residue curve.The extractive distillation process of isopropanol + isopropyl acetate + water was simulated and optimized by Aspen Plus.The results show that the mass fraction of isopropyl acetate and isopropanol are≥98%and≥99%,respectively.The results provide the data of ternary vapor-liquid equilibrium of acetic acid + isopropanol esterification reaction system,and show a theoretical basis for azeotrope separation of the system.关键词
酯化体系/共沸/汽液平衡/残留曲线/萃取精馏Key words
esterification system/azeotrope/vapor-liquid equilibrium/residue curves/extractive distillation分类
化学化工引用本文复制引用
郭义敏,邹昀,张秀钰,乔颖,童张法..乙酸+异丙醇酯化体系中汽液平衡测定及萃取精馏[J].高校化学工程学报,2024,38(2):172-183,12.基金项目
广西自然科学基金(2017GXNSFDA198047) （2017GXNSFDA198047）
广西石化资源加工及过程强化技术重点实验室主任基金(2021Z013). （2021Z013）
