Study on the multiphase heat and mass transfer mechanism in the dissociation of methane hydrate in reconstructed real-shape porous sediments
文献类型：期刊论文
| 作者 | Song, Rui; Liu, Jianjun; Yang, Chunhe; Sun, Shuyu |
| 刊名 | ENERGY
 |
| 出版日期 | 2022-09-01 |
| 卷号 | 254 |
| 关键词 | Pore scale Micro-CT image Methane hydrate Dissociation mechanism Heat and mass transfer |
| ISSN号 | 0360-5442 |
| 英文摘要 | As the first effort in literature, this paper conducts pore scale modeling on the methane hydrate dissociation and transportation in the reconstructed three-dimensional models of the MH-bearing sediment. The porous MH sample is synthesized using excess-gas method and imaged by micro-CT, which is used as input for the reconstructed mesh models. The real-time distribution of MH & water & methane, velocity and temperature is investigated. The effects of the temperature, pressure and flow rate of the injected water on MH dissociation and transportation are simulated and discussed. The results indicate that: 1) The hydrate generated by the excess - gas method is mainly cementing and mineral-coating on the sands surface, and occupies the small pores firstly. 2) The heterogeneity of the porous MH sediments is one of the key factors which influences the dissociation and the transportation process of the MH. 3) A lack of heat supply will restrict the dissociating rate of the MH reaching the maximum under the given PT conditions. 4) The gathering of the gas will decrease the flowing capacity of both water and methane. This study provides a new method to predict the multiple physicochemical and thermodynamical properties of the porous MH bearing sediments. (C) 2022 Elsevier Ltd. All rights reserved. |
| 学科主题 | Thermodynamics ; Energy & Fuels |
| 语种 | 英语 |
| WOS记录号 | WOS:000877472200008 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/34856]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Chinese Academy of Sciences; Wuhan Institute of Rock & Soil Mechanics, CAS; 2.King Abdullah University of Science & Technology |
| 推荐引用方式 GB/T 7714 | Song, Rui,Liu, Jianjun,Yang, Chunhe,et al. Study on the multiphase heat and mass transfer mechanism in the dissociation of methane hydrate in reconstructed real-shape porous sediments[J]. ENERGY,2022,254. |
| APA | Song, Rui,Liu, Jianjun,Yang, Chunhe,&Sun, Shuyu.(2022).Study on the multiphase heat and mass transfer mechanism in the dissociation of methane hydrate in reconstructed real-shape porous sediments.ENERGY,254. |
| MLA | Song, Rui,et al."Study on the multiphase heat and mass transfer mechanism in the dissociation of methane hydrate in reconstructed real-shape porous sediments".ENERGY 254(2022). |
入库方式： OAI收割
来源：武汉岩土力学研究所
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