Decomposition behaviors of methane hydrate in porous media below the ice melting point by depressurization

doi:10.1016/j.cjche.2019.02.035

	Decomposition behaviors of methane hydrate in porous media below the ice melting point by depressurization
	Zhang, Yu 1,2,3; Wang, Tian 1,2,3,4; Li, Xiaosen 1,2,3; Yan, Kefeng 1,2,3; Wang, Yi 1,2,3; Chen, Zhaoyang 1,2,3
刊名	CHINESE JOURNAL OF CHEMICAL ENGINEERING
	2019-09-01
卷号	27 期号:9 页码:2207-2212
关键词	Methane hydrate Depressurization Porous media Decomposition Ice-melting point
ISSN号	1004-9541
DOI	10.1016/j.cjche.2019.02.035
通讯作者	Li, Xiaosen(lixs@ms.giec.ac.cn)
英文摘要	( )The decomposition behaviors of methane hydrate below the ice melting point in porous media with different particle size and different pore size were studied. The silica gels with the particle size of 105-150 mu m, 150-200 mu m and 300-450 mu m, and the mean pore diameters of 12.95 nm, 17.96 nm and 3320 nm were used in the experiments. Methane recovery and temperature change curves were determined for each experiment. The hydrate decomposition process in the experiments can be divided into the depressurization period and the isobaric period. The temperature in the system decreases quickly in the depressurization process with the hydrate decomposition and reaches the lowest point in the isobaric period. The hydrate decomposition in porous media below ice-melting point is very fast and no self-perseveration effect is observed. The hydrate decomposition is influenced both by the driving force and the initial hydrate saturation. In the experiments with the high hydrate saturation, the hydrate decomposition will stop when the pressure reaches the equilibrium dissociation pressure. The stable pressure in the experiment with high hydrate saturation exceeds the equilibrium dissociation pressure of bulk hydrate and increases with the decrease of the pore size. (C) 2019 The Chemical Industry and Engineering Society of China, and Chemical Industry Press Co., Ltd. All rights reserved.
资助项目	Key Program of National Natural Science Foundation of China[51736009] ; National Natural Science Foundation of China[51476174] ; National Natural Science Foundation of China[51576202] ; National Natural Science Foundation of China[51376183] ; National Key Research and Development Plan of China[2016YFC0304002] ; Special Project for Marine Economy Development of Guangdong Province[GDME-2018D002] ; Natural Science Foundation of Guangdong Province, China[2017A030313301]
WOS关键词	NATURAL-GAS ; PRESERVATION
WOS研究方向	Engineering
语种	英语
出版者	CHEMICAL INDUSTRY PRESS CO LTD
WOS记录号	WOS:000498863100021
资助机构	Key Program of National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Plan of China ; Special Project for Marine Economy Development of Guangdong Province ; Natural Science Foundation of Guangdong Province, China
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/25993]
专题	中国科学院广州能源研究所
通讯作者	Li, Xiaosen
作者单位	1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Gas Hydrate, Guangzhou 510640, Guangdong, Peoples R China 2.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Guangdong, Peoples R China 3.Chinese Acad Sci, Guangzhou Ctr Gas Hydrate Res, Guangzhou 510640, Guangdong, Peoples R China 4.Univ Sci & Technol China, Nano Sci & Technol Inst, Suzhou 215123, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Yu,Wang, Tian,Li, Xiaosen,et al. Decomposition behaviors of methane hydrate in porous media below the ice melting point by depressurization[J]. CHINESE JOURNAL OF CHEMICAL ENGINEERING,2019,27(9):2207-2212.
APA	Zhang, Yu,Wang, Tian,Li, Xiaosen,Yan, Kefeng,Wang, Yi,&Chen, Zhaoyang.(2019).Decomposition behaviors of methane hydrate in porous media below the ice melting point by depressurization.CHINESE JOURNAL OF CHEMICAL ENGINEERING,27(9),2207-2212.
MLA	Zhang, Yu,et al."Decomposition behaviors of methane hydrate in porous media below the ice melting point by depressurization".CHINESE JOURNAL OF CHEMICAL ENGINEERING 27.9(2019):2207-2212.