食品加工中的稀醋酸回收工艺研究  

Study on Dilute Acetic Acid Recovery Processes in Food Production

作　　者：王华[1] 崔玉祥[2] 李建桥[3] 戴传波[1] 

机构地区：[1]吉林化工学院,吉林132022 [2]中国石油吉林石化公司化肥厂,吉林132022 [3]吉林大学地面机械仿生技术教育部重点实验室,长春132000

出　　处：《食品工业》2014年第12期51-53,共3页The Food Industry

基　　金：国家自然科学基金重点项目(50635030)

摘　　要：试验采用萃取与共沸精馏偶合法对稀醋酸进行提纯。采用模拟计算和试验相结合的方法,选用乙酸乙酯作为萃取剂,通过试验对进入萃取塔的醋酸质量百分含量和乙酸乙酯与醋酸的体积比值对萃余相中醋酸质量百分含量的影响进行了研究,通过ASPEN-PLUS对共沸精馏过程进行了模拟计算和试验验证,结果表明,萃取塔原料液中醋酸质量百分含量宜维持在30%以下,乙酸乙酯与醋酸的体积比值选取3-4为宜,共沸精馏塔塔顶操作温度为70℃-71℃,塔底操作温度为122℃-125℃,醋酸成品质量百分含量为90%-93%。试验和模拟数据为过程控制和设计奠定了基础。Purify dilute acetic acid with extraction and azeotropic distillation. By combination of the simulation calculation and experimental method, adopting ethyl acetate as a extraction agent, and studying the effects of acetic acid concentration of extraction tower and the volume of ethyl acetate and acetic acid on the content of extraction phase acetic acid by experiment, and by using ASPEN-PLUS simulation calculation the azeotropic distillation process and verifi cation it with experimental. The results show that the acetic acid content in the feed of extraction tower should be keep less than 30%. The volume of ethyl acetate and acetic acid select 3-4 is appropriate, the azeotropic distillation tower operating temperature on top is 70 ℃-71 ℃, Bottom operating temperature is 122 ℃-125 ℃, the concentration of acetic acid production is 90%-93%. Experimental and simulation data laid a foundation for process control and design.

关 键 词：稀醋酸 回收 萃取 共沸精馏 

分 类 号：TS205[轻工技术与工程—食品科学]