Gas hydrate formation in a variable volume bed of silica sand particles

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DOIResolve DOI: http://doi.org/10.1021/ef900542m
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TypeArticle
Journal titleAcoustics, Speech, and Signal Processing Newsletter, IEEE
Volume23
Issue11
Pages54965507; # of pages: 12
Subjectgas hydrate formation; volume beds; silica; sand particles; hydrate; interstitial; water conversion; methane; magnitude; spectroscopy; morphology
AbstractGas hydrate formation was studied in a new apparatus designed to accommodate three different size volume beds of silica sand particles. The sand particles have an average diameter equal to 329 μm. The hydrate was formed in the water, which occupied the interstitial space of the water-saturated silica sand bed. A bulk gas phase was present above the bed (gas cap). Gas uptake measurements were carried out during experiments at constant temperature. More than 74.0% of water conversion to hydrate was achieved in all experiments conducted with methane at 4.0 and 1.0 °C. An initial slow growth was followed by a rapid hydrate growth rate of equal magnitude for nearly all experiments until 43−53% of water was converted to hydrate. During the third and final growth stage, the final conversions were between 74 and 98% and the conversion dynamics changed. Independent verification of hydrate formation in the sand was achieved via Raman spectroscopy and morphology observations in experiments using the same sand/water system.
Publication date
LanguageEnglish
AffiliationNRC Steacie Institute for Molecular Sciences; National Research Council Canada
Peer reviewedYes
NPARC number16181451
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Record identifier0e3ac037-9f01-4620-9f2e-73490f323869
Record created2011-02-09
Record modified2016-05-09
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