Swapping methane with carbon dioxide in spherical hydrate pellets

doi:10.1016/j.energy.2017.08.082

GIEC OpenIR > 中国科学院广州能源研究所

	Swapping methane with carbon dioxide in spherical hydrate pellets
	Zhou, Xuebing 1,2,3; Li, Dongliang1,2,3 ; Zhang, Shaohong1 ; Liang, Deqing1,2,3
	2017-12-01
发表期刊	ENERGY
卷号	140 页码:136-143
摘要	Recovering CH4 with CO2 in hydrocarbon hydrates is renowned as an eco-friendly method for potential energy production and climate change mitigation. Due to the foamy nature of hydrates, determining the effect of hydrate surface area on the CH4 recovering rate has always been a challenge. CH4 hydrates in this work were shaped into spherical pellets 16 mm in diameter, and the CH4-CO2 replacements were carried out at about 274 K, 3.0 MPa by adding different amount of pellets in the reactor. To reveal the kinetic properties, cryo-SEM and a model based on gas diffusion theory was also employed. Results indicated that the CH4 recovery rate in the replacement was proportional to the surface area of hydrate pellets. In each 1400-h replacement, the CH4 production level was found to be about 4.5%, suggesting the gas swapping process tool< place in each pellet was the same. The kinetic model provided well descriptions of the replacements with the average deviation no more than 10%. The SEM images and the gas diffusion constants obtained from the kinetic model suggested that water mobility determined the gas diffusion rate in hydrates and help to smooth the hydrate surface during replacements. (C) 2017 Elsevier Ltd. All rights reserved.
文章类型	Article
关键词	Gas Hydrate Methane Carbon Dioxide Sem
WOS标题词	Science & Technology ; Physical Sciences ; Technology
DOI	10.1016/j.energy.2017.08.082
研究领域[WOS]	Thermodynamics ; Energy & Fuels
关键词[WOS]	NATURAL-GAS HYDRATE ; LIQUID CO2 ; IN-SITU ; REPLACEMENT ; KINETICS ; CH4 ; RECOVERY ; MIXTURE ; PRODUCTIVITY ; SPECTROSCOPY
收录类别	SCI
语种	英语
项目资助者	National Natural Science Foundation of China(51376182) ; CAS Program(KGZD-EW-301) ; Scientific cooperative project by CNPC ; CAS(2015A-4813)
WOS类目	Thermodynamics ; Energy & Fuels
WOS记录号	WOS:000415394200016
引用统计	被引频次：17[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/344007/15862
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 510640, 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
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	Zhou, Xuebing,Li, Dongliang,Zhang, Shaohong,et al. Swapping methane with carbon dioxide in spherical hydrate pellets[J]. ENERGY,2017,140:136-143.
APA	Zhou, Xuebing,Li, Dongliang,Zhang, Shaohong,&Liang, Deqing.(2017).Swapping methane with carbon dioxide in spherical hydrate pellets.ENERGY,140,136-143.
MLA	Zhou, Xuebing,et al."Swapping methane with carbon dioxide in spherical hydrate pellets".ENERGY 140(2017):136-143.