连续合成乙酸正丙酯工艺中反应与分离的平衡  

Balance of Reaction and Separation in Continuous Synthesis of n-propyl Acetate Catalyzed by Sulfuric Acid

作　　者：夏智军 冯烈 陈云斌 郑丰平 陈新志[3] XIA Zhi-jun;FENG Lie;CHEN Yun-bin;ZHENG Feng-ping;CHEN Xin-zhi(School of Pharmaceutical and Materials Engineering,Taizhou University,Zhejiang Taizhou 318000;Postdoctoral Working Station of Zhejiang Jianye Chemical Co.,Ltd.,Zhejiang Hangzhou 311600;College of Chemical and Biological Engineering,Zhejiang University,Zhejiang Hangzhou 310028,China)

机构地区：[1]台州学院医药化工与材料工程学院,浙江台州318000 [2]浙江建业化工股份有限公司博士后工作站,浙江杭州311600 [3]浙江大学化学工程与生物工程学院,浙江杭州310028

出　　处：《广州化工》2022年第10期33-35,50,共4页GuangZhou Chemical Industry

基　　金：浙江省2020年度省博士后择优资助项目(No:ZJ2020047)

摘　　要：在连续酯化合成乙酸正丙酯的工艺中,酯化釜内酯化反应与塔中脱酸脱水的平衡,对产品收率、能耗,以及整个工艺的稳定至关重要。研究发现,改善连续进料的分散程度,延长其在釜液中的停留时间,可加快酯化反应速率。在合适的连续进料空速下,维持连续进料中正丙醇与乙酸摩尔比为1.02,可确保酯化反应速率与塔分离速率的平衡,整个工艺系统在高效状态下可维持更长时间的稳定。In the continuous synthesis process of n-propyl acetate,the chemical and phase equilibrium in the reactive system was complicated and significant for improving productive efficiency,energy consumption and the stable of the whole process.The results indicated that the dispersion of the continuous feed was beneficial to accelerate the esterification reaction,as well as the extension of residence time.In a suitable weight hourly space velocities,the entire synthesis process would be kept stable for a long time,when the mole ratio of n-propyl alcohol to acetate in the continuous feed was 1.02.

关 键 词：酯化 乙酸正丙酯 连续合成 过程优化 

分 类 号：TQ062[化学工程]