Experimental Research of Methane Hydrate Dissociation

Geoscience ›› 2008, Vol. 22 ›› Issue (3): 475-479.

• Engineering Geology and Environmental Geology • Previous Articles Next Articles

Experimental Research of Methane Hydrate Dissociation

CHEN Qiang¹, YE Yu-guang¹, MENG Qing-guo², LIU Chang-ling¹

1．Qingdao Institute of Marine Geology of the Ministry of Land and Resources, Qingdao, Shandong 266071, China； 2．College of Chemical Engineering and Environment, Qingdao University, Qingdao,Shandong 266071, China

Received:2008-01-25 Revised:2008-04-28 Online:2008-03-20 Published:2008-03-20
Supported by:
陈强，男，实习研究员，1980年出生，海洋地质学专业，从事天然气水合物模拟实验研究。

Abstract

Abstract:

Gas hydrates are considered to be a new kind of resources, it is critical to know the hydrate dissociation process to make good use of this resource. In this paper, simulation experiment is used to investigate the methane hydrate dissociation. There are two kinds of dissociation methods, one is isovolumetric dissociation and the other is normal pressure dissociation. The isovolumetric dissociation experiment is carried out at p=4.5 MPa, and the dissociation speed is fast during 5.18-8 ℃, and the reaction cell pressure has good relation with temperature. In the normal pressure dissociation, we use five different porous media to investigate the porous media effect during hydrate dissociation. The study is carried out at T=1 ℃ and we find that the dissociation speed is among 1.11×10^-5-2.41×10^-5 mol/s when the porous media radius are among 0.063-0.35 mm, but the speed is not proportional to the radius.

Key words: methane gas hydrate, dissociation speed, normal pressure dissociation, iso-bulk dissociation, simulation experiment

CLC Number:

P744

CHEN Qiang, YE Yu-guang, MENG Qing-guo, LIU Chang-ling. Experimental Research of Methane Hydrate Dissociation[J]. Geoscience, 2008, 22(3): 475-479.

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Experimental Research of Methane Hydrate Dissociation

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