Characterizing potassium release under turbulent conditions during biomass stream combustion: A comparative analysis of different pretreatments

doi:10.1016/j.fuproc.2023.107881

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

	Characterizing potassium release under turbulent conditions during biomass stream combustion: A comparative analysis of different pretreatments
	Sun C(孙岑); Wei XL(魏小林)
刊名	FUEL PROCESSING TECHNOLOGY
	2023-11-01
卷号	250 页码:107881
关键词	Potassium Biomass Stream combustion Tubular flame burner Ignition Kinetics
ISSN号	0378-3820
DOI	10.1016/j.fuproc.2023.107881
英文摘要	The release rate of potassium during biomass combustion significantly influences slagging, fouling, and corrosion in industrial equipment. Given that dispersed biomass stream combustion predominantly occurs under turbulent ambient conditions, we investigate the combustion characteristics and potassium release behavior of rice husk and its derived fuels (water-washed, torrefied, and char) under high-turbulent conditions in a tubular flame burner (TFB). Tunable diode laser absorption spectroscopy (TDLAS) technology, combined with high-speed imaging, was employed to online monitor the release of atomic potassium (K(g)) and the ignition characteris-tics of biomass stream combustion. The results showed that the rice husk stream followed a joint hetero-homogeneous ignition mechanism, whereas the biochar stream underwent heterogeneous ignition in the TFB. The K(g) peak, occurring ahead of the maximum spontaneous radiation position, was observed at approximately 25 mm from the injectors, with a concentration of 0.067 ppmv during rice husk stream combustion. In contrast, the peak K(g) concentrations for biochar and torrefied rice husk were delayed, reaching 0.026 ppmv and 0.021 ppmv, respectively, compared to the raw biomass samples combusted in the TFB. Distinct differences in acti-vation energy for K(g) release were identified, with pulverized rice husk exhibiting the lowest activation energy (75.53 kJ/mol) and rice husk-char showing the highest (94.20 kJ/mol).
分类号	一类
WOS研究方向	Chemistry ; Energy & Fuels ; Engineering
语种	英语
WOS记录号	WOS:001024735600001
资助机构	National Science Foundation of China [51736010]
其他责任者	Wei, XL (corresponding author), Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Kinet, Beijing 100190, Peoples R China.
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/92574]
专题	力学研究所_高温气体动力学国家重点实验室
作者单位	1.{Sun, Cen, Wei, Xiaolin} Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Kinet, Beijing 100190, Peoples R China 2.{Sun, Cen} North China Elect Power Univ, Dept Energy Power & Mech Engn, Baoding 071003, Peoples R China 3.{Sun, Cen, Wei, Xiaolin} Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Sun C,Wei XL. Characterizing potassium release under turbulent conditions during biomass stream combustion: A comparative analysis of different pretreatments[J]. FUEL PROCESSING TECHNOLOGY,2023,250:107881.
APA	孙岑,&魏小林.(2023).Characterizing potassium release under turbulent conditions during biomass stream combustion: A comparative analysis of different pretreatments.FUEL PROCESSING TECHNOLOGY,250,107881.
MLA	孙岑,et al."Characterizing potassium release under turbulent conditions during biomass stream combustion: A comparative analysis of different pretreatments".FUEL PROCESSING TECHNOLOGY 250(2023):107881.