Kinetics of the Formation and Dissociation of Gas Hydrates from CO 2 -CH 4 Mixtures

Kristine Horvat, Prasad Kerkar, Keith Jones and Devinder Mahajan
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Kristine Horvat: Materials Science and Engineering Department, Stony Brook University, Stony Brook, New York, NY 11794, USA
Prasad Kerkar: Materials Science and Engineering Department, Stony Brook University, Stony Brook, New York, NY 11794, USA
Keith Jones: Materials Science and Engineering Department, Stony Brook University, Stony Brook, New York, NY 11794, USA
Devinder Mahajan: Materials Science and Engineering Department, Stony Brook University, Stony Brook, New York, NY 11794, USA

Energies, 2012, vol. 5, issue 7, 1-15

Abstract: Sequestration of carbon dioxide (CO 2 ) in the form of its hydrates in natural methane (CH 4 ) hydrate reservoirs, via CO 2 /CH 4 exchange, is an attractive pathway that also yields valuable CH 4 gas as product. In this paper, we describe a macroscale experiment to form CO 2 and CH 4 -CO 2 hydrates, under seafloor-mimic conditions, in a vessel fitted with glass windows that provides visualization of hydrates throughout formation and dissociation processes. Time resolved pressure and temperature data as well as images of hydrates are presented. Quantitative gas conversions with pure CO 2 , calculated from gas chromatographic measurements yielded values that range from 23 – 59% that correspond to the extent of formed hydrates. In CH 4 -rich CH 4 -CO 2 mixed gas systems, CH 4 hydrates were found to form preferentially.

Keywords: methane hydrate; carbon dioxide hydrate; mixed gas hydrate; carbon sequestration; sodium dodecyl sulfate (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2012
References: View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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