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Influence of temperature on methane hydrate formation

文献类型:期刊论文

作者Zhang, Peng1; Wu, Qingbai1; Mu, Cuicui2
刊名SCIENTIFIC REPORTS
出版日期2017-08-11
卷号7页码:13
ISSN号2045-2322
DOI10.1038/s41598-017-08430-y
通讯作者Wu, Qingbai(qbwu@lzb.ac.cn)
英文摘要During gas hydrate formation process, a phase transition of liquid water exists naturally, implying that temperature has an important influence on hydrate formation. In this study, methane hydrate was formed within the same media. The experimental system was kept at 1.45, 6.49, and 12.91 degrees C respectively, and then different pressurization modes were applied in steps. We proposed a new indicator, namely the slope of the gas flow rates against time (d.g/dt), to represent the intrinsic driving force for hydrate formation. The driving force was calculated as a fixed value at the different stages of formation, including initial nucleation/growth, secondary nucleation/growth, and decay. The amounts of gas consumed at each stage were also calculated. The results show that the driving force during each stage follows an inverse relation with temperature, whereas the amount of consumed gas is proportional to temperature. This opposite trend indicates that the influences of temperature on the specific formation processes and final amounts of gas contained in hydrate should be considered separately. Our results also suggest that the specific ambient temperature under which hydrate is formed should be taken into consideration, when explaining the formation of different configurations and saturations of gas hydrates in natural reservoirs.
收录类别SCI
WOS关键词GLOBAL CARBON-CYCLE ; GULF-OF-MEXICO ; GAS HYDRATE ; POROUS-MEDIA ; MARINE-SEDIMENTS ; DRIVING-FORCE ; LAKE BAIKAL ; NUCLEATION ; GROWTH ; ENERGY
WOS研究方向Science & Technology - Other Topics
WOS类目Multidisciplinary Sciences
语种英语
WOS记录号WOS:000407442500044
出版者NATURE PUBLISHING GROUP
URI标识http://www.irgrid.ac.cn/handle/1471x/2558014
专题寒区旱区环境与工程研究所
通讯作者Wu, Qingbai
作者单位1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 73000, Gansu, Peoples R China
2.Lanzhou Univ, Coll Earth & Environm Sci, Key Lab Western Chinas Environm Syst, Minist Educ, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式
GB/T 7714
Zhang, Peng,Wu, Qingbai,Mu, Cuicui. Influence of temperature on methane hydrate formation[J]. SCIENTIFIC REPORTS,2017,7:13.
APA Zhang, Peng,Wu, Qingbai,&Mu, Cuicui.(2017).Influence of temperature on methane hydrate formation.SCIENTIFIC REPORTS,7,13.
MLA Zhang, Peng,et al."Influence of temperature on methane hydrate formation".SCIENTIFIC REPORTS 7(2017):13.

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来源:寒区旱区环境与工程研究所

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