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http://dx.doi.org/10.4491/KSEE.2011.33.1.047

Separation and Recovery of $SF_6$ Gas from $N_2/SF_6$ Gas Mixtures by using a Polymer Hollow Fiber Membranes  

Lee, Hyun-Jung (Water Environment Center, Korea Institute of Science and Technology)
Lee, Min-Woo (Water Environment Center, Korea Institute of Science and Technology)
Lee, Hyun-Kyung (Department of Industrial Chemistry, Sangmyung University)
Lee, Sang-Hyup (Water Environment Center, Korea Institute of Science and Technology)
Publication Information
Journal of Korean Society of Environmental Engineers / v.33, no.1, 2011 , pp. 47-53 More about this Journal
Abstract
$SF_6$ (Sulfur hexafluoride) possesses high GWP (Global Warming Potential) as sepcified by the IPCC (Intergonvernmental Panel of Climate Change). Recently, the recovery-separtion of $SF_6$ research area, including permeation properties studies using various membrane's materials and the practical operation of recovery-separtion using membrane of waste $SF_6$ gas is in the initial state. The separation efficiency of a single $SF_6$ and waste $SF_6$ mixture was evaluated using a PSF (polysulfone), PC (tetra-bromo polycarbonate) and PI (polyimide) hollow fiber membranes. According to the results of single gases permeation properties, PI membrane has the highest permselectivity of $N_2$ gas in $N_2/SF_6$ gas. Under the condition of P=0.5 MPa, the highest concentration of recovered $SF_6$ is 95.6 vol % in the separation experiment of $SF_6/N_2$ mixture gas by PC membrane. Under the operation pressure of P=0.3 MPa at a fixed retentate flow rate fixed of 150 cc/min, the maximum recovery efficiency of $SF_6$ is up to 97.8% by PSF membrane. From the results above, it is thought that the separation and recovery technique of $SF_6$ gas using membrane will be used as the representative eco-technology in the $SF_6$ gas treatment in the future.
Keywords
Sulfur Hexafluoride ($SF_6$); Polymer Hollw Fiber Membrane; Separation; Recovery;
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Times Cited By KSCI : 2  (Citation Analysis)
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