网络出版日期: 2008-04-20
基金资助
国家自然科学基金项目（编号：4047006）；国家自然科学基础人才培养基金冰川冻土学特殊学科点（编号：J0630966）
Effect of Particle Size of Ice on Methane Hydrate Self-Preservation below Freezing Point
Online published: 2008-04-20
展静, 吴青柏, 蒋观利 . 冰颗粒粒径对冰点以下甲烷水合物自保护效应的影响[J]. 天然气地球科学, 2008 , 19(4) : 577 -580 . DOI: 10.11764/j.issn.1672-1926.2008.04.577
To study the impacts of the ice particle size on the self preservation of methane hydrate, the dissociation experiment of methane hydrates were carried out. It contains six different sizes of ice particles under two different temperatures, aiming at analyzing the impacts of the total release volume of methane and the dissociation rate on the self preservation time. The results show that the size of the ice particle had evident impacts on the dissociation of methane hydrates. The total release volume of methane and the dissociation rate were inversely proportional to the ice particle size, the smaller the ice particle size, the faster the dissociation rate. This feature was very remarkable at the beginning of the dissociation. And, the methane hydrate formed by the bigger size of ice particle had more effective self\|preservation.
Key words： Methane hydrate; Self preservation; Dissociation; Particle size.
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