Methane recovery from natural gas hydrate with simulated IGCC syngas

doi:10.1016/j.energy.2016.12.129

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	Methane recovery from natural gas hydrate with simulated IGCC syngas
	Ding, Ya-Long 1,2,3,4; Xu, Chun-Gang 1,2,3; Yu, Yi-Song 1,2,3,4; Li, Xiao-Sen1,2,3
刊名	ENERGY
	2017-02-01
卷号	120 页码:192-198
关键词	Ch4 Hydrate Replacement Igcc Syngas Raman
DOI	10.1016/j.energy.2016.12.129
文献子类	Article
英文摘要	Methane(CH4) recovery from natural gas hydrates(NGHs) by CO2-CH4 replacement is considered as a win-win technology for producing CH4 and sequestrating CO2 synchronously. In this investigation, simulated Integrated Gasification Combined Cycle (IGCC) syngas of CO2/H-2 gas mixture is used to replace CH4 from simulated methane hydrate which is formed in pure water at 274.15 K and 4.5 MPa. The changes of concentrations of CH4, CO2 and H-2 in gas phase during the replacement process are supervised by Gas Chromatograph (GC), and the gas hydrates are determined through in situ Raman. Meanwhile, the CH4 recovery and the replacement mechanism are qualitatively analyzed. The results indicate that, on one hand, the replacement consists of two steps, CH4 hydrate dissociation at the first and followed by CO2 hydrate formation, on the other hand, the CH4 recovery from CH4-CO2/H-2 replacement is more than 71% which is significantly higher than that from CH4-CO2 replacement. Notably, no H-2 is found in the hydrate phase in the replacement process, which implying that H-2 does not compete with CH4 molecules occupying hydrate cages but plays promotion role in CO2-CH4 replacement.(C) 2017 Elsevier Ltd. All rights reserved.
WOS关键词	GASIFICATION COMBINED-CYCLE ; CARBON-DIOXIDE ; PHASE-EQUILIBRIA ; HIGH-PRESSURE ; CO2 ; REPLACEMENT ; EXPLOITATION ; MIXTURE ; SYSTEM ; SPECTROSCOPY
语种	英语
WOS记录号	WOS:000395953000017
资助机构	National Natural Science Fund(51376184) ; National Science Fund for Distinguished Young Scholars of China(51225603) ; International S&T Cooperation Program of China(2015DFA61790)
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/14074]
专题	中国科学院广州能源研究所
作者单位	1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Gas Hydrate, Guangzhou 510641, Guangdong, Peoples R China 2.Guangdong Key Lab New & Renewable Energy Res & De, Guangzhou 510640, Guangdong, Peoples R China 3.Chinese Acad Sci, Guangzhou Ctr Gas Hydrate Res, Guangzhou 510640, Guangdong, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	Ding, Ya-Long,Xu, Chun-Gang,Yu, Yi-Song,et al. Methane recovery from natural gas hydrate with simulated IGCC syngas[J]. ENERGY,2017,120:192-198.
APA	Ding, Ya-Long,Xu, Chun-Gang,Yu, Yi-Song,&Li, Xiao-Sen.(2017).Methane recovery from natural gas hydrate with simulated IGCC syngas.ENERGY,120,192-198.
MLA	Ding, Ya-Long,et al."Methane recovery from natural gas hydrate with simulated IGCC syngas".ENERGY 120(2017):192-198.