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Gas hydrate formation in fine sand
Zang XiaoYa1,2,3; Liang DeQing1,2; Wu NengYou1,2
2013-04-01
发表期刊SCIENCE CHINA-EARTH SCIENCES
卷号56期号:4页码:549-556
摘要Gas hydrate formation from two types of dissolved gas (methane and mixed gas) was studied under varying thermodynamic conditions in a novel apparatus containing two different natural media from the South China Sea. The testing media consisted of silica sand particles with diameters of 150-250 mu m and 250-380 mu m. Hydrate was formed (as in nature) in salt water that occupies the interstitial space of the partially water-saturated silica sand bed. The experiments demonstrate that the rate of hydrate formation is a function of particle diameter, gas source, water salinity, and thermodynamic conditions. The initiation time of hydrate formation was very short and pressure decreased rapidly in the initial stage. The process of mixed gas hydrate formation can be divided into three stages for each type of sediment. Sand particle diameter and water salinity also can influence the formation process of hydrate. The conversion rate of water to hydrate was different under varying thermodynamic conditions, although the formation processes were similar. The conversion rate of methane hydrate in the 250-380 mu m sediment was greater than that in the 150-250 mu m sediment. However, the sediment grain size has no significant influence on the conversion rate of mixed gas hydrate.
文章类型Article
关键词Gas Hydrate Formation Kinetics Water Conversion Rate Natural Porous Media Thermodynamic Condition
WOS标题词Science & Technology ; Physical Sciences
DOI10.1007/s11430-012-4546-5
研究领域[WOS]Geology
关键词[WOS]METHANE HYDRATE ; POROUS-MEDIA ; WATER ; SEDIMENTS ; DISSOCIATION ; NUCLEATION ; SAMPLE
收录类别SCI
语种英语
WOS类目Geosciences, Multidisciplinary
WOS记录号WOS:000317347200005
引用统计
被引频次:20[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.giec.ac.cn/handle/344007/10048
专题中国科学院广州能源研究所
作者单位1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy & Gas Hydrate, Guangzhou 510640, Peoples R China
2.Chinese Acad Sci, Guangzhou Ctr Gas Hydrate Res, Guangzhou 510640, Peoples R China
3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
第一作者单位中国科学院广州能源研究所
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Zang XiaoYa,Liang DeQing,Wu NengYou. Gas hydrate formation in fine sand[J]. SCIENCE CHINA-EARTH SCIENCES,2013,56(4):549-556.
APA Zang XiaoYa,Liang DeQing,&Wu NengYou.(2013).Gas hydrate formation in fine sand.SCIENCE CHINA-EARTH SCIENCES,56(4),549-556.
MLA Zang XiaoYa,et al."Gas hydrate formation in fine sand".SCIENCE CHINA-EARTH SCIENCES 56.4(2013):549-556.
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