Experimental Study on Hydrate Formation with Synthesized CH4/CO2/N-2 Ternary Mixtures

doi:10.1021/acs.energyfuels.8b02021

	Experimental Study on Hydrate Formation with Synthesized CH4/CO2/N-2 Ternary Mixtures
	Zang, Xiaoya ; Liang, Deqing 1
刊名	ENERGY & FUELS
	2018-10-01
卷号	32 期号:10 页码:10745-10753
ISSN号	0887-0624
DOI	10.1021/acs.energyfuels.8b02021
通讯作者	Liang, Deqing(liangdq@ms.giec.ac.cn)
英文摘要	The variations in the equilibrium conditions of the hydrate phase between different gas components can be employed for gas separation. The use of hydrate-based gas separation technologies for CH4 recovery from biogas has gained prominence. In this study, the formation of a ternary mixture gas hydrate with CH4, CO2, and N-2 was studied. The amount of gas consumed and the hydrate formation rate were calculated using pressure and temperature variations during the reaction. Gas composition changes, the CH4 recovery factor, and CO2 split ratio were the key parameters considered to evaluate the technical feasibility of HBGS. Results indicated that the formation of the mixture gas hydrate depends on the driving force between the hydrate equilibrium conditions and operating conditions. The process of hydrate formation can be divided into two stages: Most of the CO2 formed the hydrate in the first stage, and both CH4 and N-2 may have entered the hydrate structure in the second stage. For a given gas, the CO2 separation and CH4 recovery could not be optimized for one specific P-T condition. The powder X-ray diffraction measurements indicated that the ternary mixture gas hydrate was an structure I. The experimental results herein can provide data and theoretical support for CH4 purification and CO2 separation from biogas.
资助项目	National key research and development plan of China[2017YFC0307305] ; National Natural Science Foundation of China[51676197] ; CAS Program[KGZD-EW-301]
WOS关键词	PRE-COMBUSTION CAPTURE ; UNCONVENTIONAL HYDROCARBON RESOURCES ; CARBON-DIOXIDE ; NATURAL-GAS ; CO2 CAPTURE ; FLUE-GAS ; BIOGAS MIXTURES ; SEPARATION ; BROMIDE ; STABILITY
WOS研究方向	Energy & Fuels ; Engineering
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000448087000071
资助机构	National key research and development plan of China ; National Natural Science Foundation of China ; CAS Program
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/24146]
专题	中国科学院广州能源研究所
通讯作者	Liang, Deqing
作者单位	1.Chinese Acad Sci, Guangzhou Ctr Gas Hydrate Res, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China 2.CAS Key Lab Gas Hydrate, Guangzhou 510640, Guangdong, Peoples R China 3.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Zang, Xiaoya,Liang, Deqing. Experimental Study on Hydrate Formation with Synthesized CH4/CO2/N-2 Ternary Mixtures[J]. ENERGY & FUELS,2018,32(10):10745-10753.
APA	Zang, Xiaoya,&Liang, Deqing.(2018).Experimental Study on Hydrate Formation with Synthesized CH4/CO2/N-2 Ternary Mixtures.ENERGY & FUELS,32(10),10745-10753.
MLA	Zang, Xiaoya,et al."Experimental Study on Hydrate Formation with Synthesized CH4/CO2/N-2 Ternary Mixtures".ENERGY & FUELS 32.10(2018):10745-10753.