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http://dx.doi.org/10.3740/MRSK.2008.18.2.073

Effects of Surfactant on SF6 Gas Hydrate Formation Rate  

Lee, Bo-Ram (School of Materials Science and Engineering, Pusan National University)
Lee, Hyun-Ju (School of Materials Science and Engineering, Pusan National University)
Kim, Shin-Ho (School of Materials Science and Engineering, Pusan National University)
Lee, Ju-Dong (Korea Institute of Industrial Technology, Busan Research Center Advenced Manufacturing Technology Team, Pusan National University)
Kim, Yang-Do (School of Materials Science and Engineering, Pusan National University)
Publication Information
Korean Journal of Materials Research / v.18, no.2, 2008 , pp. 73-76 More about this Journal
Abstract
[ $SF_6$ ] gas has been widely used as an insulating, cleaning and covering gas due to its outstanding insulating feature and because of its inert properties. However, the global warming potential of $SF_6$ gas is extremely high relative to typical global warming gases such as $CO_2$, CFCs, and $CH_4$. For these reasons, it is necessary to separate and collect waste $SF_6$ gas. In this study, the effects of a surfactant (Tween) on the formation rate of $SF_6$ gas hydrates were investigated. The $SF_6$ gas hydrate formation rate increased with the addition of Tween and showed a nearly 6.5 times faster hydrate formation rate with an addition of 0.2 wt.% Tween compared to an addition of pure water. This is believed to be due to the increased solubility of $SF_6$ gas with the addition of the surfactant. It was also found that $SF_6$ gas hydrate in the surfactant solution showed two-stage hydrate formation rates with a formation rate that increased rapidly in the 2nd stage.
Keywords
gas hydrate; $SF_6$(sulfur hexafluoride); tween; surface active agent;
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