Design and optimization of recovering C2F4 emission gas by membrane separation method
DAI Yan1,2, ZHAO Yu-xuan3, GAI Li-mei1, GUO Ming-gang1, YANG Xiao-hang1, XI Yuan1
1. Panjin Industrial Technology Institute, Dalian University of Technology, Panjin 124221, China; 2. School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an 710049, China; 3. School of Petroleum and Chemical Engineering, Dalian University of Technology, Panjin 124221, China
Abstract: The fluorine-containing emission gas discharged from the tetrafluoroethylene production unit of the fluorine chemical enterprises is often recovered by solvent absorption method,which will leave a small amount of fluorine-containing emission gas that needs to be treated via combustion.In order to solve this problem,a membrane separation technology is used to recover tetrafluoroethylene in the exhaust gas to achieve energy saving and efficiency improvement.Taking the exhaust gas of tetrafluoroethylene production unit in a certain chemical plant as design base,Unisim Design simulation software is used for simulation design and optimization.It is shown that the content of tetrafluoroethylene recovered by membrane separation method can still exceed 80 mol% as the content of tetrafluoroethylene in the exhaust gas is only about 12 mol%,and the content of oxygen in the recovered tetrafluoroethylene can be ensured to be lower than 30×10-6.This method exhibits good economic and environmental benefits.
代岩, 赵宇轩, 盖丽梅, 郭明钢, 杨晓航, 郗元. 膜分离回收四氟乙烯尾气的设计与优化[J]. 现代化工, 2019, 39(11): 198-201,206.
DAI Yan, ZHAO Yu-xuan, GAI Li-mei, GUO Ming-gang, YANG Xiao-hang, XI Yuan. Design and optimization of recovering C2F4 emission gas by membrane separation method. Modern Chemical Industry, 2019, 39(11): 198-201,206.
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