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Molecular dynamics simulation of decomposition and thermal conductivity of methane hydrate in porous media |
| Ping Guo(郭平)1, Yi-Kun Pan(潘意坤)1, Long-Long Li(李龙龙)2, Bin Tang(唐斌)2 |
1 State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China;
2 School of Sciences, Southwest Petroleum University, Chengdu 610500, China |
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Abstract The hydrate has characteristics of low thermal conductivity and temperature sensitivity. To further analysis the mechanism of thermal conductivity and provide method for the exploitation, transportation and utilization of hydrate, the effect of decomposition and thermal conductivity of methane hydrate in porous media has been studied by using the molecular dynamics simulation. In this study, the simulation is carried out under the condition of temperature 253.15 K–273.15 K and pressure 1 MPa. The results show that the thermal conductivity of methane hydrate increases with the increase of temperature and has a faster growth near freezing. With the addition of porous media, the thermal conductivity of the methane hydrate improves significantly. The methane hydrate-porous media system also has the characteristics of vitreous body. With the decrease of the pore size of the porous media, thermal conductivity of the system increases gradually at the same temperature. It can be ascertained that the porous media of different pore sizes have strengthened the role of the thermal conductivity of hydrates.
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Received: 31 March 2017
Revised: 10 May 2017
Accepted manuscript online:
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PACS:
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31.15.at
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(Molecule transport characteristics; molecular dynamics; electronic structure of polymers)
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44.30.+v
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(Heat flow in porous media)
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65.40.-b
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(Thermal properties of crystalline solids)
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| Fund: Project supported by the National Natural Science Foundation of Special Fund and Chinese Academy of Engineering (Grant No.L1322021). |
Corresponding Authors:
Ping Guo
E-mail: guopingswpi@vip.sina.com
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Cite this article:
Ping Guo(郭平), Yi-Kun Pan(潘意坤), Long-Long Li(李龙龙), Bin Tang(唐斌) Molecular dynamics simulation of decomposition and thermal conductivity of methane hydrate in porous media 2017 Chin. Phys. B 26 073101
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| [1] |
Bagherzadeh S A, Alavi S, Ripmeester J A and Englezos P 2013 Fluid Phase Equilib 358 114
|
| [2] |
Max M D 2003 Natural Gas Hydrate in Oceanic and Permafrost Environments (Dordrecht:Kluwer Academic Publishers) pp. 9——16
|
| [3] |
Holder G D and Angert P 1981 Intersociety Energy Conversion Engineering Conference August 9, 1981 Atlanta, USA, p. 810812
|
| [4] |
Holder G D, Kamath V A and Godbole S P 1984 Annu. Rev. Energy 9 427
|
| [5] |
Kvenvolden K A 1988 Chem. Geol. 71 41
|
| [6] |
Max M D and Lowrie A 1996 J. Pet. Geol. 19 41
|
| [7] |
Englezos P 1993 Ind. Eng. Chem. Res. 32 1251
|
| [8] |
Kumar P, Turner D and Sloan E D 2004 J. Geophys. Res. 109 241
|
| [9] |
Xu W and Ruppel C 1999 J. Geophys. Res. Solid Earth 104 5081
|
| [10] |
Ju Y Y, Zhang Q M, Gong Z Z and Ji G F 2013 Chin. Phys. B 22 083101
|
| [11] |
Lin W Q, Xu B, Chen L, Zhou F and Chen J L 2016 Acta Phys. Sin. 65 133102 (in Chinese)
|
| [12] |
Xu B, Lin W Q, Wang X G, Zeng S W, Zhou G Q and Chen J L 2017 Chin. Phys. B 26 033103
|
| [13] |
Hu G J and Cao B Y 2014 Chin. Phys. B 23 096501
|
| [14] |
Wu T Y, Lai W S and Fu B Q 2013 Chin. Phys. B 22 076601
|
| [15] |
McMullan R K and Jeffrey G A 1965 J. Chem. Phys. 42 2725
|
| [16] |
Berendsen H J C, Grigera J R and Straatsma T P 1987 J. Phys. Chem. 91 6269
|
| [17] |
Jorgensen W L, Madura J D and Swenson C J 1984 J. Am. Chem. Soc. 106 6638
|
| [18] |
Plimpton S 1995 J. Comp. Phys. 117 1
|
| [19] |
Tse J S, Klein M L and McDonald I R 1983 J. Phys. Chem. 87 4198
|
| [20] |
Abascal J L F, Sanz E, Fernàndez R G and Vega C 2005 J. Chem. Phys. 122 234511
|
| [21] |
Lopes P E M, Murashov V, Tazi M, Demchuk E and MacKerell A D 2006 J. Phys. Chem. B 110 2782
|
| [22] |
Rodger P M 1991 AIChE J. 37 1511
|
| [23] |
Forrisdahl O K, Kwamme B and Haymet A D 1996 J. Mol. Phys. 89 819
|
| [24] |
Hirai S, Okazaki K, Tabe Y and Kawamura K 1997 Energy Convers. Manage. 38 S301
|
| [25] |
Handa Y P and Cook J G 1987 J. Phys. Chem. 91 6327
|
| [26] |
Waite W F, Pinkston J and Kirby S H 2002 Preliminary Laboratory Thermal Conductivity Measurements in Pure Methane Hydrate and Methane Hydrate-sediment Mixtures:a Progress Report (Yokohama:Proceedings of the Fourth International Conference on Gas Hydrate) pp. 728——733
|
| [27] |
Desmedt A, Bedouret L, Pefoute E, Pouvreau M, Say-Liang-Fat S and Alvarez M 2012 Eur. Phys. J. Special Topics 213 103
|
| [28] |
Li D L, Liang D Q, Fan S S and Peng H 2010 J. Nat. Gas. Chem. 19 229
|
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