Separation and Recovery of SF6Gas from N2/SF6Gas Mixtures by using a Polymer Hollow Fiber Membranes
고분자 중공사 분리막을 이용한 N2/SF6혼합가스로부터 SF6의 분리 및 회수

Hyun-Jung Lee, Min-Woo Lee, Hyun-Kyung Lee, Sang-Hyup Lee
2011 Journal of Korean Society of Environmental Engineers  
SF6 (Sulfur hexafluoride) possesses high GWP (Global Warming Potential) as sepcified by the IPCC (Intergonvernmental Panel of Climate Change). Recently, the recovery-separtion of SF6 research area, including permeation properties studies using various membrane's materials and the practical operation of recovery-separtion using membrane of waste SF6 gas is in the initial state. The separation efficiency of a single SF6 and waste SF6 mixture was evaluated using a PSF (polysulfone), PC
more » ... polycarbonate) and PI (polyimide) hollow fiber membranes. According to the results of single gases permeation properties, PI membrane has the highest permselectivity of N2 gas in N2/SF6 gas. Under the condition of P=0.5 MPa, the highest concentration of recovered SF6 is 95.6 vol % in the separation experiment of SF6/N2 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 SF6 is up to 97.8% by PSF membrane. From the results above, it is thought that the separation and recovery technique of SF6 gas using membrane will be used as the representative eco-technology in the SF6 gas treatment in the future.
doi:10.4491/ksee.2011.33.1.047 fatcat:lbnoagcaovaqpirochrnbcapyy