化工进展2012，Vol.31Issue(5)：992-996,5.
无累积罐循环全回流间歇精馏三温控制操作
Tri-temperature control method on cyclic total reflux batch distillation without reflux drum
黄丽丽 1白鹏 1王磊 1尹琨 1姜占坤1
作者信息
摘要
Abstract
A control method of total reflux by introducing temperatures of top part, upper-middle part and middle part in batch distillation column without reflux drum was proposed. The ethanol--n-propanol system identified as a typical ideal system was used to conduct the experimental study of this operation. The optimized temperature control conditions were determined by experiments： when the temperature of the top part was stable and difference between the upper-middle part and the top part was 0.3 ~C, the total reflux operation would be switched to the total withdrawal operation, and if the temperature of the middle part rose by 1 ~C, the total withdrawal operation should be converted to the total reflux operation. From the results of experiments under the same operating conditions, the influence of different feed concentrations on the overhead product average purity is not significant, basically maintained at 0.99 （ mass fraction ） . Finally, compared with dual temperature control method under the same feed concentration and operating conditions, this tri-temperature control method reduces operating time by 23.3 min, promotes separation efficiency by 23.95%, increases the purity of product by 1.06% and increases the product yield by 1.08%.关键词
间歇精馏/全回流/全采出/无累积罐循环全回流/三温控Key words
batch distillation/total reflux/total withdrawal/cyclic total reflux operation without refluxdrum/tri-temperature control分类
化学化工引用本文复制引用
黄丽丽,白鹏,王磊,尹琨,姜占坤..无累积罐循环全回流间歇精馏三温控制操作[J].化工进展,2012,31(5):992-996,5.
