Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
Effects of the NaCl Concentration and Montmorillonite Content on Formation Kinetics of Methane Hydrate | |
Zeng, Haopeng1,2,3; Zhang, Yu1,2; Zhang, Lei1,2,3; Chen, Zhaoyang1,2; Li, Xiaosen1,2 | |
2022-04-01 | |
发表期刊 | JOURNAL OF MARINE SCIENCE AND ENGINEERING |
卷号 | 10期号:4页码:14 |
通讯作者 | Zhang, Yu(zhangyul@ms.giec.ac.cn) ; Li, Xiaosen(lixs@ms.giec.ac.cn) |
摘要 | Most resources of natural gas hydrate (NGH) exist in marine sediments where salts and sea mud are involved. It is of great importance to investigate the effects of salts and sea mud on NGH formation kinetics. In this study, the mixture of silica sand and montmorillonite was used to mimic sea mud. The effects of the NaCl concentration of pore water and montmorillonite content on methane hydrate formation were studied. A low NaCl concentration of 0.2 mol/L and a low montmorillonite content range of 10-25 wt% is beneficial to reduce the induction time of hydrate formation. The high NaCl concentration and high content of montmorillonite will significantly increase the induction time. The average induction time for the experiments with the NaCl concentrations of 0, 0.2, 0.6, and 1.2 mol/L is 20.99, 8.11, 15.74, and 30.88 h, respectively. In the pure silica sand, the NaCl concentration of 0.2 mol/L can improve the final water conversion. In the experiments with pure water, the water conversion increases with the increase of the montmorillonite content due to the improvement of the dispersion of montmorillonite to water. The water conversion of the experiments in pure water with the montmorillonite contents of 0, 10, 25 and 40 wt% is 12.14% (+/- 1.06%), 24.68% (+/- 1.49%), 29.59% (+/- 2.30%), and 32.57% (+/- 1.64%), respectively. In the case of both montmorillonite and NaCl existing, there is a complicated change in the water conversion. In general, the increase of the NaCl concentration enhances the inhibition of hydrate formation and reduces the final water conversion, which is the key factor affecting the final water conversion. The average water conversion of the experiments under the NaCl concentrations of 0, 0.2, 0.6 and 1.2 mol/L is 24.74, 15.14, 8.85, and 5.74%, respectively. |
关键词 | methane hydrate NaCl concentration montmorillonite hydrate formation kinetic |
DOI | 10.3390/jmse10040548 |
关键词[WOS] | CLAY MINERAL DISTRIBUTION ; NATURAL-GAS HYDRATE ; SOUTH CHINA SEA ; SURFACE SEDIMENTS ; DISSOCIATION ; PHASE ; BASIN ; BED |
收录类别 | SCI |
语种 | 英语 |
资助项目 | National Natural Science Foundation of China[52076208] ; National Natural Science Foundation of China[51736009] ; Guangdong Special Support Program[2019BT02L278] ; Special project for marine economy development of Guangdong Province[GDME-2020D044] |
WOS研究方向 | Engineering ; Oceanography |
项目资助者 | National Natural Science Foundation of China ; Guangdong Special Support Program ; Special project for marine economy development of Guangdong Province |
WOS类目 | Engineering, Marine ; Engineering, Ocean ; Oceanography |
WOS记录号 | WOS:000786084000001 |
出版者 | MDPI |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.giec.ac.cn/handle/344007/36122 |
专题 | 中国科学院广州能源研究所 |
通讯作者 | Zhang, Yu; Li, Xiaosen |
作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Gas Hydrate, Guangzhou 510640, Peoples R China 2.Chinese Acad Sci, Guangdong Prov Key Lab, New & Renewable Energy Res & Dev, Guangzhou 510640, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100083, Peoples R China |
第一作者单位 | 中国科学院广州能源研究所 |
推荐引用方式 GB/T 7714 | Zeng, Haopeng,Zhang, Yu,Zhang, Lei,et al. Effects of the NaCl Concentration and Montmorillonite Content on Formation Kinetics of Methane Hydrate[J]. JOURNAL OF MARINE SCIENCE AND ENGINEERING,2022,10(4):14. |
APA | Zeng, Haopeng,Zhang, Yu,Zhang, Lei,Chen, Zhaoyang,&Li, Xiaosen.(2022).Effects of the NaCl Concentration and Montmorillonite Content on Formation Kinetics of Methane Hydrate.JOURNAL OF MARINE SCIENCE AND ENGINEERING,10(4),14. |
MLA | Zeng, Haopeng,et al."Effects of the NaCl Concentration and Montmorillonite Content on Formation Kinetics of Methane Hydrate".JOURNAL OF MARINE SCIENCE AND ENGINEERING 10.4(2022):14. |
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