Indexed by:期刊论文
Date of Publication:2017-11-29
Journal:SEPARATION AND PURIFICATION TECHNOLOGY
Included Journals:SCIE、EI
Volume:188
Page Number:468-475
ISSN No.:1383-5866
Key Words:Gas membrane separation; Tetrafluoroethylene; Field test; Optimization; Adaptive control
Abstract:This is a continuation of the development of polyimide membrane for tetrafluoroethylene (TFE) recovery [Sep.Purif.Techno1.124(2014)89-98]. A industrial membrane plant has been designed and constructed after cryogenic acetone absorption to enhance TFE recovery for the first time. Specific to the 10-kt/a TFE synthesis plants, the nominal process capacity is set as 20 Nm(3)/h. The vacuum mode (0.08 MPaG) is executed for the permeate side to increase the feed/permeate pressure ratio and enhance separation performance under low feed pressure. In response to the drastic fluctuation in feed flow rate and composition, owing to the unsteady cracking reaction, the adaptive control of membrane area is customized technically for the operation strategy. In detail, one or two modules can be shut down by the automatic response while the stream into membrane plant is lower in flow rate or higher in TFE content, and vice versa. In comparison to the ordinary mode under inflexible operation, whose TFE recovery ratio is about 84.5%, the adaptive control strategy behaved better with the recovery ratio up to 87.6%. According to the three-month running result, the membrane recovery plant with adaptive membrane area control can efficiently decrease TFE loss from 130 to 17 t/a, and the annual gross profit was about 1.264 million US dollar, with the payback period less than 4 months. It is undoubted that the polyimide membrane plant is practicable and cost-efficient for TFE recovery in the synthesis.
Professor
Supervisor of Doctorate Candidates
Supervisor of Master's Candidates
Main positions:化工学院副院长
Other Post:Vice director of Engineering Laboratory of Liaoning Province
Gender:Male
Alma Mater:Tianjin University
Degree:Doctoral Degree
School/Department:School of Chemical Engineering
Discipline:Chemical Engineering. Membrane Science and Technology. Water Science and Technology
Business Address:大连理工大学西部校区化工实验楼D405
Contact Information:Tel:0411-84986291
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