Kinetics, compositions and structures of carbon dioxide/hydrogen hydrate formation in the presence of cyclopentane

doi:10.1016/j.apenergy.2020.114808

	Kinetics, compositions and structures of carbon dioxide/hydrogen hydrate formation in the presence of cyclopentane
	Yu, Yi-Song 1,2,4,5,6,7; Zhang, Qing-Zong 3,4,5,6; Li, Xiao-Sen 4,5,6; Chen, Chang 4,5,6; Zhou, Shi-Dong 3
刊名	APPLIED ENERGY
	2020-05-01
卷号	265 页码:9
关键词	Cyclopentane Hydrate CO2 recovery Raman spectra X-ray Gas-liquid ratio
ISSN号	0306-2619
DOI	10.1016/j.apenergy.2020.114808
通讯作者	Li, Xiao-Sen(lixs@ms.giec.ac.cn)
英文摘要	Cyclopentane(CP) as an efficient promoter has not been evaluated for capturing CO2 form fuel gas via forming hydrate. The work systematically studies the kinetics and CO2 recovery of gas (40.0 mol% CO2 + 60.0 mol% H-2) hydrate formation in the presence of CP at 276.15 K and 6.0 MPa. Meanwhile, X-ray diffraction and Raman spectrum were adopted to determine the hydrate structure and composition. The results showed that there were two steps for hydrate formation in the system, Step 1: Pure CP hydrates formation. Step 2: Gas molecules trapped in hydrate cages to form CP/gas (CO2, H-2) mixed hydrates. Besides, the CO2 recovery of up to 98.8% was obtained at gas-liquid ratio of 5/6 and CP volume concentration of 23.4 vol%, indicating that almost all CO2 could be removed from fuel gas by one-stage of hydrate formation. In addition, not only CP/gas (CO2, H-2) mixed hydrates (sII) but also pure CO2 hydrates (sI) are observed in the system. Strikingly, the work confirms that some of H-2 molecules are also trapped in the hydrate phase, and its amount increased as the CP volume concentration increase. From the view point of cost-effective and H-2-saving, the gas-liquid ratio of 5/6, CP volume concentration of 3.0 vol% and precooling liquid are the optimum conditions for HBGS.
资助项目	Key Program of National Natural Science Foundation of China[51736009] ; Key Research Program of Frontier Sciences, CAS[ZDBS-LY-SLH041] ; Natural Science Foundation of Guangdong Province, China[2019A1515012086] ; Program of Key Laboratory of Gas Hydrate, CAS[y907jc1001] ; Special Project for Marine Economy Development of Guangdong Province[GDME-2018D002] ; Science and Technology Apparatus Development Program of the Chinese Academy of Sciences[YZ201619] ; Frontier Sciences Key Research Program of the Chinese Academy of Sciences[QYZDJ-SSW-JSC033] ; International Postdoctoral Exchange Fellowship Program[20190073] ; National Natural Science Foundation of China[51974037]
WOS关键词	CO2 CAPTURE ; PHASE-EQUILIBRIA ; DIOXIDE CAPTURE ; GAS ; HYDROGEN ; TETRAHYDROFURAN ; SEPARATION ; MIXTURES ; CO2/H-2 ; TECHNOLOGIES
WOS研究方向	Energy & Fuels ; Engineering
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000522639500028
资助机构	Key Program of National Natural Science Foundation of China ; Key Research Program of Frontier Sciences, CAS ; Natural Science Foundation of Guangdong Province, China ; Program of Key Laboratory of Gas Hydrate, CAS ; Special Project for Marine Economy Development of Guangdong Province ; Science and Technology Apparatus Development Program of the Chinese Academy of Sciences ; Frontier Sciences Key Research Program of the Chinese Academy of Sciences ; International Postdoctoral Exchange Fellowship Program ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/26962]
专题	中国科学院广州能源研究所
通讯作者	Li, Xiao-Sen
作者单位	1.Colorado Sch Mines, Chem & Biol Engn Dept, Golden, CO 80401 USA 2.CAS Guangzhou Chem Co, Guangzhou 510650, Peoples R China 3.Changzhou Univ, Jiangsu Key Lab Oil & Gas Storage & Transportat T, Changzhou 213016, Jiangsu, Peoples R China 4.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Gas Hydrate, Guangzhou 510640, Peoples R China 5.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China 6.Chinese Acad Sci, Guangzhou Ctr Gas Hydrate Res, Guangzhou 510640, Peoples R China 7.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Yu, Yi-Song,Zhang, Qing-Zong,Li, Xiao-Sen,et al. Kinetics, compositions and structures of carbon dioxide/hydrogen hydrate formation in the presence of cyclopentane[J]. APPLIED ENERGY,2020,265:9.
APA	Yu, Yi-Song,Zhang, Qing-Zong,Li, Xiao-Sen,Chen, Chang,&Zhou, Shi-Dong.(2020).Kinetics, compositions and structures of carbon dioxide/hydrogen hydrate formation in the presence of cyclopentane.APPLIED ENERGY,265,9.
MLA	Yu, Yi-Song,et al."Kinetics, compositions and structures of carbon dioxide/hydrogen hydrate formation in the presence of cyclopentane".APPLIED ENERGY 265(2020):9.