Explosion characteristics and combustion mechanism of hydrogen/tungsten dust hybrid mixtures

doi:10.1016/j.fuel.2022.126017

	Explosion characteristics and combustion mechanism of hydrogen/tungsten dust hybrid mixtures
	Yu, Xiaozhe 1; Zhang, Zhenhua 1; Yan, Xingqing 1; Wang, Zhen 2; Yu, Jianliang 1; Gao, Wei 1
刊名	FUEL
	2023-01-15
卷号	332
关键词	Hydrogen tungsten dust Explosion characteristics Flame propagation Combustion residues Combustion mechanism
ISSN号	0016-2361
DOI	10.1016/j.fuel.2022.126017
通讯作者	Yu, Jianliang(yujianliang@dlut.edu.cn) ; Gao, Wei(gaoweidlut@dlut.edu.cn)
英文摘要	Hybrid mixtures of hydrogen/tungsten dust, which may cause explosions in nuclear fusion reactors and the tungsten industry, have higher risk and more complex mechanism than the explosion of a single combustible medium. The explosion and flame propagation characteristics of hydrogen/tungsten dust hybrid mixtures were studied in a closed combustion tube. The results show that the explosion pressure is dominated by the stoichiometric ratio of the hybrid fuel, while the rate of pressure rise and flame propagation behaviors are mainly dominated by the stoichiometric ratio of the gaseous fuel. The structure and composition of the residues were analyzed. With the change of the hydrogen-tungsten ratio, the composition of the explosion residues can be divided into four regions, corresponding to WO3, WO2.9, WO2.72 and W. Based on the residues analysis, a mechanism for the combustion of a hydrogen/tungsten dust hybrid mixture is further established. The mechanism reveals the combustion mode of tungsten agglomerates in oxygen-rich and hydrogen-rich environments, and explains the effects of heat balance, the mass-consumption rate of oxidizer and the agglomerate radius on the combustion behaviors of the aggregated particles. These results provide a reference for understanding the combustion mechanism of hybrid mixtures containing metal agglomerates and preventing the potential explosion risk.
资助项目	National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; [52104187] ; [52174167] ; [51906249] ; [2022M710585]
WOS关键词	LAMINAR BURNING VELOCITY ; HYDROGEN REDUCTION ; FLAME PROPAGATION ; ALUMINUM PARTICLE ; TUNGSTEN ; OXIDE ; BEHAVIORS ; IGNITION ; SAFETY ; TIH2
WOS研究方向	Energy & Fuels ; Engineering
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000874420800003
资助机构	National Natural Science Foundation of China ; China Postdoctoral Science Foundation
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/130019]
专题	中国科学院合肥物质科学研究院
通讯作者	Yu, Jianliang; Gao, Wei
作者单位	1.Dalian Univ Technol, Sch Chem Engn, Dalian 116024, Peoples R China 2.Chinese Acad Sci, Inst Nucl Energy Safety Technol, Hefei Inst Phys Sci, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Yu, Xiaozhe,Zhang, Zhenhua,Yan, Xingqing,et al. Explosion characteristics and combustion mechanism of hydrogen/tungsten dust hybrid mixtures[J]. FUEL,2023,332.
APA	Yu, Xiaozhe,Zhang, Zhenhua,Yan, Xingqing,Wang, Zhen,Yu, Jianliang,&Gao, Wei.(2023).Explosion characteristics and combustion mechanism of hydrogen/tungsten dust hybrid mixtures.FUEL,332.
MLA	Yu, Xiaozhe,et al."Explosion characteristics and combustion mechanism of hydrogen/tungsten dust hybrid mixtures".FUEL 332(2023).