摘要
乙酸乙酯和乙醇形成的共沸物在化工生产中分离难度较大,传统分离方法往往存在效率低和能耗高等问题。选择三丁基甲基醋酸铵作为萃取剂,借助Aspen Plus软件对乙酸乙酯-乙醇共沸物的分离开展模拟研究。以实现乙酸乙酯和乙醇纯度最高且热负荷消耗最小为目标,深入考察理论板数、萃取剂进料位置、回流比以及原料进料位置等因素对分离效果的影响。经模拟发现,当理论塔板数为12块,萃取剂进料量为19 kmol/h,萃取精馏塔回流比为1.8,原料进料位置为第6块塔板时,再沸器和冷凝器的热负荷分别为3.33 MW和1.25 MW,乙酸乙酯的纯度可高达99.999%,同时乙醇的质量分数也满足工业需求。
It is difficult to separate the azeotrope formed by ethyl acetate and ethanol in chemical production,and traditional separation methods often have problems such as low efficiency and high energy consumption.The separation of ethyl acetate and ethanol azeotrope was simulated by Aspen Plus software.In order to achieve the highest purity of ethyl acetate and ethanol and the lowest heat load consumption,the effects of theoretical plate number,extraction agent feed location,reflux ratio and raw material feed location on the separation effect was investigated.The simulation results show that when the number of theoretical plates is 12,the feed amount of extractor is 19 kmol/h,the reflux ratio of extractive distillation column is 1.8,and the feed position of raw material is the 6th plate,the heat loads of the reboiler and condenser are 3.33 MW and 1.25 MW respectively,and the purity of ethyl acetate can be as high as 99.999%.Meanwhile,the mass fraction of ethanol also meets the industrial demands.
作者
闫龙
石晨
王雅坤
温家欢
李彦军
亢玉红
石栋
YAN Long;SHI Chen;WANG Ya-kun;WEN Jia-huan;LI Yan-jun;KANG Yu-hong;SHI Dong(School of Chemistry and Chemical Engineering,Yulin University,Yulin,Shaanxi719000,China;The 12th Bureau Group Co.,LTD.of China Railway Department,Taiyuan,Shanxi 030024,China)
出处
《煤炭加工与综合利用》
2025年第9期48-51,55,共5页
Coal Processing & Comprehensive Utilization
基金
国家自然基金(22368049和22068038),陕西省科技厅基金(2024JC-YBQN-0115),榆林市青年人才托举项目(20240603),榆林市产学研合作项目(2024-CXY-127)和榆林学院高层次人才项目(2023GK59)。
作者简介
闫龙(2001-),男,陕西兴平人,榆林学院化学工程专业2024级在读硕士研究生,研究方向:煤化工;通讯作者:石晨(1993-),男,陕西西安人,博士,讲师,长期从事煤化工工艺模拟研究。
