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The Permeation Behaviors of $H_2S/CH_4$ using Polyimide Hollow Fiber Membranes  

Lee, Hyung-Keun (Korea Institute of Energy Research)
An, Young-Mo (Korea Institute of Energy Research)
Kim, Dae-Hoon (Korea Institute of Energy Research)
Jo, Hang-Dae (Korea Institute of Energy Research)
Seo, Yong-Seog (Korea Institute of Energy Research)
Park, Yeong-Seong (Department of Environmental Engineering, Daejeon University)
Publication Information
Membrane Journal / v.19, no.4, 2009 , pp. 261-267 More about this Journal
Abstract
Polyimide which is the glassy polymer has high chemical resistance, thermal stability and high mechanical property. In this study, the polyimide hollow fiber membranes were prepared by the dry-jet wet phase inversion in order to investigate the permeation porperties of the $H_2S$ and $CH_4$. The morphology of prepared hollow fiber membranes and their permeation behaviors of $H_2S$ and $CH_4$ before and after silicon coating were evaluated. The permeance of $H_2S$ and $H_2S/CH_4$ selectivity increased due to plasticization with increasing the feed pressure. The permeance of KSM03b and selectivity of KSM03d were highest among the three type membranes used this experiments. The permeance decreased but the $H_2S/CH_4$ selectivity increased with increasing the air gap. The permeance reduced after silicon coating. However, the selectivity increased and the selectivity of KSM03d was 275 at 7 atm.
Keywords
$H_2S$; $CH_4$; Polyimide; Hollow fiber membrane; Gas separation;
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Times Cited By KSCI : 5  (Citation Analysis)
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