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

doi:10.3390/jmse10040548

GIEC OpenIR

	Effects of the NaCl Concentration and Montmorillonite Content on Formation Kinetics of Methane Hydrate
	Zeng, Haopeng 1,2,3; Zhang, Yu1,2 ; Zhang, Lei 1,2,3; Chen, Zhaoyang 1,2; 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	被引频次：6[WOS] [WOS记录] [WOS相关记录]
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.