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间歇精馏的过渡馏份导致设备的有效处理量减小和能耗加大，本文提出一种过渡馏份的新型操作方法：“全回流全馏出”循环重复的脉冲控制法，充分利用过程的动态特性以提高分离效率，实验验证表明，脉冲法可大大减少过渡馏份量和明显缩短馏出时间。
The transitional distillation of batch distillation leads to the reduction of the effective treatment capacity and the increase of the energy consumption. A new operation method of transitional distillation is proposed in this paper: the pulse repetition method of “full reflux and full distillation” The dynamic characteristics of the process to improve the separation efficiency, experimental verification shows that the pulse method can greatly reduce the amount of transitional distillation and significantly shorten the distillation time.