带有侧线出料的真空间歇精馏法提纯桃醛的研究  

Study on Purification of Peach Aldehyde by Vacuum Batch Rectification with Side Withdrawal Method

作　　者：许保云[1] 江孝平[1] 艾波[1] 吴高胜[1] 翟金国[1] 王传昌[1] 

机构地区：[1]上海化工研究院精细化工研究所,上海200062

出　　处：《香料香精化妆品》2016年第2期1-5,共5页Flavour Fragrance Cosmetics

基　　金：上海市自然科学基金资助项目(14ZR1420800);上海张江国家自主创新示范区专项发展资金重点项目(201411-PT-C104-028)

摘　　要：采用真空间歇侧线出料精馏技术对桃醛原料进行分离实验,研究了塔顶采出量变化、回流比变化和侧线出料位置的变化对桃醛质量分数的影响。实验结果表明:在有效填料高度为1.5 m下采用变回流比操作,操作压力不超过1 kPa,釜温不超过180℃,侧线出料位置在全塔的2/3位置的条件下,侧线采出的样品中桃醛的质量分数随塔顶采出量的增加而升高;在同一采出量的情况下,侧线采出的样品中桃醛的质量分数要大于塔顶采出样品中桃醛的质量分数;侧线取样前加入全回流操作令侧线采出样品中桃醛质量分数有所提高,但提高幅度很少。同时可得出,为了得到高纯度的桃醛产品,最佳侧线采出位置在距离塔釜0.5 m到1 m之间。The experimental study for purification of peach aldehyde by vacuum batch rectification with side withdrawal was studied in this paper. And the influences of the amount of intermediate cut, the reflux ratio and the side withdrawal position on the purity of peach aldehyde were investigated experimentally. The results showed that the purity of peach aldehyde from the side withdrawal increased with the amount of intermediate cut at the column under the following conditions： the system pressure was less than 1 kPa, the reboiler temperature was less than 180℃,the side withdrawal position was 1 m from the bottom. In the case of the same amount of intermediate cut, the mass ratio of peach aldehyde in the side withdrawal sample was higher than that of the column top sample. The total reflux operation before the side withdrawal action had little influence on the mass ratio of peach aldehyde from the side withdrawal sample. And the optimum side withdrawal position was between 0.5 m to 1 m from the bottom.

关 键 词：桃醛 真空间歇精馏 侧线出料 

分 类 号：TQ657[化学工程—精细化工]