Potassium release during pulverized biomass combustion in a tubular burner investigated by TDLAS

doi:10.1016/j.fuel.2022.123570

CORC > 力学研究所 > 中国科学院力学研究所 > 高温气体动力学国家重点实验室

	Potassium release during pulverized biomass combustion in a tubular burner investigated by TDLAS
	Cen, Sun 2,3; Xiaolin, Wei 2,3; Teng, Li 2,3; Li, Zhou 1; Qinzheng, Teng 2,3; Sen, Li 2,3
刊名	FUEL
	2022-06-01
卷号	317 页码:12
关键词	Biomass Alkali metal Tunable diode laser absorption spectroscopy Tubular burner
ISSN号	0016-2361
DOI	10.1016/j.fuel.2022.123570
通讯作者	Xiaolin, Wei(xlwei@imech.ac.cn)
英文摘要	The ignition and effect of different treatments of pulverized biomass on potassium release were monitored online using visible light detection and calibration-free TDLAS techniques in a tubular burner, with the following main conclusions. High-speed cyclonic flow enhanced the transport effect around the particles, allowing for the rapid separation and diffusion of volatile fractions from biomass particles, as well as the rapid but transient release of potassium. There were no visible envelope flames or trailing flames around the burning particles. High-speed photography also confirmed the homo-heterogeneous ignition. The release of water-soluble potassium was significantly postponed under an O2/CO2 atmosphere compared with the air atmosphere, shifting from a quick and instantaneous model to a continuous and slow-release one. In comparison, the O2/CO2 atmosphere had little suppression effect on the exchangeable and organic potassium release process. In both air and O2/CO2 combustion, the water-soluble potassium release was the fastest, followed by organic potassium and exchangeable state potassium. The release ratio of atomic potassium, the proportion of released atomic potassium in initial total potassium in particles, from water-washed and NH3Ac-washed rice husk is higher than that from rice husk combustion, under O2/CO2 and O2/N2 combustion conditions. The release process of potassium enriched in char takes a long time but has a low release rate. The inhibitory effect of the O2/CO2 atmosphere on the potassium release during rice husk char combustion was relatively weak compared with rice husk combustion.
资助项目	Key Project of the National Natural Science Foundation of China[51736010]
WOS关键词	DISPERSED COAL PARTICLES ; SODIUM RELEASE ; ZHUNDONG COAL ; NUMERICAL-SIMULATION ; ATOMIC POTASSIUM ; IGNITION ; TEMPERATURE ; BEHAVIOR ; O-2/N-2 ; ALKALI
WOS研究方向	Energy & Fuels ; Engineering
语种	英语
WOS记录号	WOS:000788281800004
资助机构	Key Project of the National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/88985]
专题	力学研究所_高温气体动力学国家重点实验室
通讯作者	Xiaolin, Wei
作者单位	1.Xi An Jiao Tong Univ, Sch Energy & Power Engn, Xian 710049, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Kinet, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Cen, Sun,Xiaolin, Wei,Teng, Li,et al. Potassium release during pulverized biomass combustion in a tubular burner investigated by TDLAS[J]. FUEL,2022,317:12.
APA	Cen, Sun,Xiaolin, Wei,Teng, Li,Li, Zhou,Qinzheng, Teng,&Sen, Li.(2022).Potassium release during pulverized biomass combustion in a tubular burner investigated by TDLAS.FUEL,317,12.
MLA	Cen, Sun,et al."Potassium release during pulverized biomass combustion in a tubular burner investigated by TDLAS".FUEL 317(2022):12.