摘要
采用真空间歇精馏技术对桃醛原料进行分离试验,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方法。试验结果表明:采用变回流比操作,操作压力不超过4 0kPa,釜温低于180℃,产品中桃醛的质量分数达到99 0%以上,收率达到72 4%,其中辛醇杂质质量分数低于5×10-6。应用化工过程动态模拟软件HysysPlant2 2对试验过程进行了模拟,采用恒塔顶浓度和变回流比控制策略,模拟结果和试验测定值符合较好。
The experimental study for purification of peach aldehyde by vacuum batch distillation,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\^0 kPa and temperature of the reboiler is less than 180 ℃ with variable reflux ratio.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 5×10^(-6).The experimental study is simulated by Hysis Plant 2.2 and it agrees well with the simulation.This can give some suggestion for the purification process.
出处
《化学工业与工程》
CAS
2005年第2期112-114,144,共4页
Chemical Industry and Engineering
关键词
桃醛
真空间歇精馏
回流比
peach aldehyde
vacuum batch distillation
reflux ratio
