Advances in New and Renewable Energy >
Experimental Study of Methane Hydrate Formation in Bentonite
Received date: 2017-01-18
Revised date: 2017-03-06
Online published: 2017-04-28
The formation behaviors of methane hydrate in bentonite were experimentally studied. The experiments were carried out under conditions of bath temperatures of 3oC, 5oC, 7oC and 9oC, and initial pressures of 9 MPa, 12 MPa and 15 MPa. The experimental results indicate that the induction time of methane hydrate formation is very short and the methane hydrate formation rate is very fast. When the initial pressure is 12 MPa and the bath temperature is 3oC, the induction time is 16.5 min and it’s shorter than that of other experiments. When the temperature of the system is lower than the setting temperature, the hydrate formation halted. The hydrate formation is controlled by the process of mass transfer. After the hydrate stops forming, the final pressure is significantly higher than the phase equilibrium pressure of bulk hydrate. The final conversion of water ranges between 55.73% and 61.93%. The final water conversion decreases with the increase of bath temperature, but lower bath temperature have no significant help to enhance the final conversion of water.
CHEN Long , ZHANG Yu , LI Xiao-sen , CHEN Zhao-yang , LI Gang . Experimental Study of Methane Hydrate Formation in Bentonite[J]. Advances in New and Renewable Energy, 2017 , 5(2) : 104 -109 . DOI: 10.3969/j.issn.2095-560X.2017.02.04
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