Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.energy.2013.10.031
Title: HBGS (hydrate based gas separation) process for carbon dioxide capture employing an unstirred reactor with cyclopentane
Authors: Ho, L.C.
Babu, P.
Kumar, R.
Linga, P. 
Keywords: Carbon dioxide capture
Cyclopentane
Gas hydrates
Gas separation
Pre-combustion
Unstirred reactor
Issue Date: 15-Dec-2013
Source: Ho, L.C., Babu, P., Kumar, R., Linga, P. (2013-12-15). HBGS (hydrate based gas separation) process for carbon dioxide capture employing an unstirred reactor with cyclopentane. Energy 63 : 252-259. ScholarBank@NUS Repository. https://doi.org/10.1016/j.energy.2013.10.031
Abstract: The effect of CP (cyclopentane) as a promoter/additive, in the HBGS (hydrate based gas separation) process for pre-combustion gas mixture was investigated by employing an unstirred reactor configuration. Gas uptake measurements were performed at two different temperatures (275.7K and 285.7K) and at an experimental pressure of 6.0MPa to determine the kinetics of hydrate formation. Experiments were conducted with three different volumes (7.5, 15 and 22ml) of CP and based on induction time and the rate of hydrate growth, 15ml of CP was determined to be the optimal volume for carbon dioxide capture at 6.0MPa and 275.7K. In addition, the effect of a kinetic promoter, SDS (sodium dodecyl sulfate), was investigated. Surprisingly, no improvement in kinetic performance was observed at 6.0MPa and 275.7K in the presence of SDS and CP. From the study, it was found that at the optimal 15ml CP (CP layer thickness of 1.8mm), the average composition of carbon dioxide in the hydrate phase was 90.36mol% with a separation factor of 17.82. Furthermore, the unstirred reactor also yielded better kinetic performance over the stirred tank reactor with the unstirred reactor having a 2.28 times higher average gas uptake. © 2013 Elsevier Ltd.
Source Title: Energy
URI: http://scholarbank.nus.edu.sg/handle/10635/64004
ISSN: 03605442
DOI: 10.1016/j.energy.2013.10.031
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