Separation of N-2/SF6 binary mixtures using polyethersulfone (PESf) hollow fiber membrane

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PESf hollow fiber membrane was used to recover sulfur hexafluoride (SF6) from N-2/SF6 binary mixture gas. To fabricate a hollow fiber membrane, a dry-wet phase inversion method was used. Fiber was post-treated by methanol to increase permeance. Fabricated membrane was characterized by scanning electron microscopy (SEM) and N-2, SF6 single gas permeation according to temperature and pressure difference. Using N-2/SF6 binary mixture gas (10 vol% of SF6), we checked the separation of mixture gas in a manufactured single module according to temperature, pressure difference, and retentate flow rate. The highest SF6 purity in recovered gas was 50.4 vol% when the pressure difference, temperature, and stage cut was highest in experimental conditions, but the recovery ratio marked the lowest value.
Publisher
KOREAN INSTITUTE CHEMICAL ENGINEERS
Issue Date
2012-08
Language
English
Article Type
Article
Keywords

GAS SEPARATION; PERFORMANCE; ABSORPTION; CONTACTOR; RECOVERY; SF6

Citation

KOREAN JOURNAL OF CHEMICAL ENGINEERING, v.29, no.8, pp.1081 - 1085

ISSN
0256-1115
DOI
10.1007/s11814-011-0294-z
URI
http://hdl.handle.net/10203/102963
Appears in Collection
RIMS Journal Papers
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