Formation and storage characteristics of CO2 hydrate in porous media: Effect of liquefaction amount on the formation rate, accumulation amount

doi:10.1016/j.applthermaleng.2022.118747

	Formation and storage characteristics of CO2 hydrate in porous media: Effect of liquefaction amount on the formation rate, accumulation amount
	Zhang, Xuemin 1,2,3; Wang, Jiaxian 1,2,3; Yang, Huijie 1,2,3; Li, Jinping 1,2,3; Li, Yinhui 1,2,3; Wu, Qingbai 2,4
刊名	Applied Thermal Engineering
	2022-09-01
卷号	214
关键词	Gas emissions Gas hydrates Global warming Greenhouse gases Hydration Liquefaction Porous materials CO2 storage Condition Formation characteristics Formation process Formation rates Greenhouse gas emissions Liquefaction amount Medium effect Porous medium Storage characteristic
ISSN号	1359-4311
DOI	10.1016/j.applthermaleng.2022.118747
英文摘要	Hydrate-based CO2 capture and storage is considered to be an effective way to reduce greenhouse gas emissions and mitigate global warming. Evaluation of the formation and storage characteristics require to illuminate the dependence of CO2 phase behavior and the formation properties of hydrate in porous media. In this work, the formation process of CO2 hydrate was investigated to elucidate the influence mechanism and law of different liquefaction amount on the formation characteristics of CO2 hydrate in porous media. The results showed that CO2 liquefaction significantly promoted the formation process of hydrate and the liquefied amount was a critical factor in affecting the formation process of CO2 hydrate in porous media. Compared with the condition of non-liquefaction, the higher formation rate and larger gas storage capacity were obtained under liquefaction conditions. The formation rate of CO2 hydrate reached 6.32 × 10−4 mol/h under the condition of partial liquefaction. Furthermore, the formation rate of CO2 hydrate increased with the initial pressure increasing in the experiments. However, there was an optimal liquefaction amount occurred in promoting the hydrate formation in porous media. The formation rate of CO2 hydrate sharply decreased and it was only 3.4 × 10−4 mol/h under condition of complete liquefaction. The results further indicated that, CO2 liquefaction could promote the formation process of CO2 hydrate in porous media within a certain range of liquefaction amount. These results will provide a theoretical guidance and reference for sequestration and storage of CO2 gas in the form of hydrate in sediments. © 2022 Elsevier Ltd
WOS研究方向	Thermodynamics ; Energy & Fuels ; Engineering ; Mechanics
语种	英语
出版者	Elsevier Ltd
WOS记录号	WOS:000823303000006
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/159136]
专题	能源与动力工程学院
作者单位	1.Western China Energy & Environment Research Center, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Collage of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 3.Key Lab of Complementary Energy System of Biomass and Solar Energy, Gansu Province, Lanzhou; 730050, China; 4.Northwest Institute of Eco-Environment and Resources, Chinese Academy of Science, Lanzhou; 730000, China
推荐引用方式 GB/T 7714	Zhang, Xuemin,Wang, Jiaxian,Yang, Huijie,et al. Formation and storage characteristics of CO2 hydrate in porous media: Effect of liquefaction amount on the formation rate, accumulation amount[J]. Applied Thermal Engineering,2022,214.
APA	Zhang, Xuemin,Wang, Jiaxian,Yang, Huijie,Li, Jinping,Li, Yinhui,&Wu, Qingbai.(2022).Formation and storage characteristics of CO2 hydrate in porous media: Effect of liquefaction amount on the formation rate, accumulation amount.Applied Thermal Engineering,214.
MLA	Zhang, Xuemin,et al."Formation and storage characteristics of CO2 hydrate in porous media: Effect of liquefaction amount on the formation rate, accumulation amount".Applied Thermal Engineering 214(2022).