桃醛的提纯研究  

Study on Purification of Peach Aldehyde

作　　者：许松林[1] 应安国[1] 王淑华[1] 

机构地区：[1]天津大学精馏技术国家工程研究中心,天津300072

出　　处：《香料香精化妆品》2004年第5期1-3,35,共4页Flavour Fragrance Cosmetics

摘　　要：采用真空间歇精馏技术对桃醛原料进行分离实验研究 ,考察了桃醛的热敏性 ;确定了安全的操作温度范围和适宜的操作策略。实验结果表明 :采用改变回流比操作 ,操作压力不超过 4.0kPa ,釜温低于 1 70℃ ,产品中桃醛的质量浓度达到 99%以上 ,收率达到 72 .4% ,其中辛醇杂质含量低于 5ppm。采用化工过程动态模拟软件HysysPlant2 .2对实验过程进行了模拟 ,采用恒定塔顶浓度和改变回流比控制策略 ,模拟结果和实验测定值符合较好。The experimental study for purification of Peach Aldehyde by vacuum batch rectification, as well as the heat sensitivity of the product, is carried out. The optimal operation condition for purification of Peach Aldehyde is that:the pressure of operation system is less than 4.0kPa and temperature of the reboiler is less than 170℃ with variable reflux. The concentration and average yield of the product is up to 99.0%and 72.4% respectively. Meanwhile, the impurity of n-octanol is less than 5.0ppm.The experimental study was simulated by Hysys Plant 2.2, which can give some suggestion for the purification process.

关 键 词：化工过程 间歇精馏 提纯 回流比 收率 杂质含量 热敏性 改变 适宜 研究 

分 类 号：TQ654[化学工程—精细化工]