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Effects of the NaCl Concentration and Montmorillonite Content on Formation Kinetics of Methane Hydrate

文献类型：期刊论文

作者Zeng, Haopeng1,2,3; Zhang, Yu1,3; Zhang, Lei1,2,3; Chen, Zhaoyang1,3; Li, Xiaosen1,3
刊名JOURNAL OF MARINE SCIENCE AND ENGINEERING
出版日期2022-04-01
卷号10期号:4页码:14
关键词methane hydrate NaCl concentration montmorillonite hydrate formation kinetic
DOI10.3390/jmse10040548
通讯作者Zhang, Yu(zhangyul@ms.giec.ac.cn) ; Li, Xiaosen(lixs@ms.giec.ac.cn)
英文摘要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.
WOS关键词CLAY MINERAL DISTRIBUTION ; NATURAL-GAS HYDRATE ; SOUTH CHINA SEA ; SURFACE SEDIMENTS ; DISSOCIATION ; PHASE ; BASIN ; BED
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
语种英语
出版者MDPI
WOS记录号WOS:000786084000001
资助机构National Natural Science Foundation of China ; Guangdong Special Support Program ; Special project for marine economy development of Guangdong Province
源URL[http://ir.giec.ac.cn/handle/344007/36121]  
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, Guangdong Prov Key Lab, New & Renewable Energy Res & Dev, Guangzhou 510640, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100083, Peoples R China
3.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Gas Hydrate, Guangzhou 510640, Peoples R China
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.

入库方式： OAI收割

来源：广州能源研究所

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