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
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| 2022-04-01 | |
| Source Publication | JOURNAL OF MARINE SCIENCE AND ENGINEERING
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| Volume | 10Issue:4Pages:14 |
| Corresponding Author | Zhang, Yu(zhangyul@ms.giec.ac.cn) ; Li, Xiaosen(lixs@ms.giec.ac.cn) |
| Abstract | 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. |
| Keyword | methane hydrate NaCl concentration montmorillonite hydrate formation kinetic |
| DOI | 10.3390/jmse10040548 |
| WOS Keyword | CLAY MINERAL DISTRIBUTION ; NATURAL-GAS HYDRATE ; SOUTH CHINA SEA ; SURFACE SEDIMENTS ; DISSOCIATION ; PHASE ; BASIN ; BED |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 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 Research Area | Engineering ; Oceanography |
| Funding Organization | National Natural Science Foundation of China ; Guangdong Special Support Program ; Special project for marine economy development of Guangdong Province |
| WOS Subject | Engineering, Marine ; Engineering, Ocean ; Oceanography |
| WOS ID | WOS:000786084000001 |
| Publisher | MDPI |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.giec.ac.cn/handle/344007/36122 |
| Collection | 中国科学院广州能源研究所 |
| Corresponding Author | Zhang, Yu; Li, Xiaosen |
| Affiliation | 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 |
| First Author Affilication | GuangZhou Institute of Energy Conversion,Chinese Academy of Sciences |
| Recommended Citation 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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