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http://dx.doi.org/10.9713/kcer.2013.51.4.500

Study on the Promotion Effect of Ionic Liquid on CH4 Hydrate Formation  

Shin, Ju-Young (Department of Chemical Engineering, Hanyang University)
Kim, Kisub (Chemical and Biological Engineering, Korea National University of Transportation)
Kang, Seong-Pil (Greenhouse Gas Department, Korea Institute of Energy Research)
Mun, Sungyong (Department of Chemical Engineering, Hanyang University)
Publication Information
Korean Chemical Engineering Research / v.51, no.4, 2013 , pp. 500-505 More about this Journal
Abstract
In this study, we investigated the kinetics of gas hydrate formation in the presence of ionic liquid (IL). Hydroxyethyl-methyl-morpholinium chloride (HEMM-Cl) was chosen as a material for the promotion effect test. Phase equilibrium curve for $CH_4$ hydrate with aqueous IL solution was obtained and its induction time and consumed amount of $CH_4$ gas were also measured. Aqueous solutions containing 20~20,000 ppm of HEMM-Cl was prepared and studied at 70 bar and 274.15 K. To compare the measured results to those of the conventional promoter, sodium dodecyl sulfate was also tested at the same condition. Result showed that the hydrate equilibrium curve was shifted toward higher pressure and lower temperature region. In addition, the induction time on $CH_4$ hydrate formation in the presence of IL was not shown. The amount of consumed $CH_4$ was increased with the whole range of tested concentration of IL and the highest consumption of $CH_4$ happened at 1,000 ppm of HEMM-Cl. HEMM-Cl induced and enhanced the $CH_4$ hydrate formation with a small amount of addition. Obtained result is expected to be applied for the development of technologies such as gas storage and transport using gas hydrates.
Keywords
Gas Hydrate; Promoter; Ionic Liquid; Methane;
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Times Cited By KSCI : 2  (Citation Analysis)
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