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

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,...

Full description

Bibliographic Details
Published in:Energies
Main Authors: Devinder Mahajan, Keith Jones, Kristine Horvat, Prasad Kerkar
Format: Article in Journal/Newspaper
Language:English
Published: MDPI AG 2012
Subjects:
methane hydrate
carbon dioxide hydrate
mixed gas hydrate
carbon sequestration
sodium dodecyl sulfate
Technology
T
Methane hydrate
Online Access:https://doi.org/10.3390/en5072248
https://doaj.org/article/ec6741e5c13e4303b1f1a7ce6c4b8a01
Description
Summary: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.

Similar Items