Enhanced hydrate formation kinetics at near ambient temperatures and moderate pressures - Application to natural gas storage

SNG (Solidified Natural Gas) technology via clathrate hydrates for natural gas storage is suitable for large scale stationary storage of natural gas. To assess the scale-up potential of SNG technology, hydrate formation kinetics in presence of methane and 5.6 mol% tetrahydrofuran (THF) was investigated at moderate pressure and temperature conditions. A synergistic effect of kinetic promotion was observed by coupling tetrahydrofuran (THF) and sodium dodecyl sulphate (SDS) at 293.2 K. For the first time, we observe rapid hydrate formation kinetics at 293.2 K (closer to the ambient temperature) and 7.2 MPa in presence of just 100 ppm SDS with methane gas uptake of 3.45(± 0.171) kmol/m3 of water in 1 h. Further, substantial methane gas uptake of 3.52(±0.13) kmol/m3 of water is possible even at reduced experimental pressure of 3.0 MPa and 283.2 K in 2 h. Minimal energy requirement under demonstrated conditions can propel this technology for commercial deployment.

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This work has been published in Fuel on May 24, 2016 (doi:10.1016/j.fuel.2016.05.068)

Corresponding author(s): Praveen Linga ( This email address is being protected from spambots. You need JavaScript enabled to view it. )
Corresponding authors(s) Webpage: http://gashydrates.chbe.nus.edu.sg