Research progress on distillation process in high boiling point and thermal sensitive system

被引：0
作者：
Li C. [1 ]
Tian X. [1 ]
Li H. [1 ]
Hu Y. [1 ]
机构：
[1] National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources Utilization, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin
来源：
Huagong Jinzhan/Chemical Industry and Engineering Progress | 2022年 / 41卷 / 04期
关键词：
Distillation; Heat sensitivity; High boiling point; Molecular distillation; Vacuum distillation;
D O I：
10.16085/j.issn.1000-6613.2021-0830
中图分类号：
学科分类号：
摘要：
In distillation system, separation of high boiling point and heat sensitive material system has problems of high heating temperature and long heating time, which is easy causing the deterioration of heat-sensitive material, and it has been the difficulty of efficient separation and purification. In this paper, the principle of distillation separation of high boiling heat and heat sensitive material system is summarized, and the process requirements of low operating pressure and short residence time is proposed. The advantages, disadvantages and applications of molecular distillation and vacuum distillation (including vacuum distillation, vacuum fractionation and vacuum batch distillation) in the separation of high boiling point and heat sensitive systems are summarized. It is found that the vacuum degree and separation degree of molecular distillation are higher than vacuum distillation, but the separation efficiency and industrialization degree of molecular distillation are lower than vacuum distillation. Finally, for the separation of high boiling point and heat sensitive systems by distillation, it is still necessary to explore new processes and new equipment to improve separation efficiency and reduce separation energy consumption, so as to facilitate industrial-scale applications. © 2022, Chemical Industry Press Co., Ltd. All right reserved.
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页码：1704 / 1714
页数：10
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