Kinetic characteristics of pulverized coal combustion in the two-phase flow

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	Kinetic characteristics of pulverized coal combustion in the two-phase flow
	Li, Zhengang 1; Guo, Zhancheng 1; Gong, Xuzhong 2; Tang, Huiqing 1
刊名	ENERGY
	2013-06-15
卷号	55 期号:0 页码:585-593
关键词	Two-phase flow Micro fluidized bed Pulverized coal Combustion Kinetics
英文摘要	The kinetic characteristics of pulverized coal combustion in the two-phase flow were studied using the micro fluidized bed kinetic analyzer (MFBKA) so as to get closer to the actual working condition. On the basis of the performance of CO and CO2 emissions, the effect of various operating parameters, such as reaction temperature, superficial gas velocity, coal particle size, oxygen concentration and coal properties, on the combustion rate was investigated. The yield ratio of CO to CO2 remained 1:1 until the reaction temperature exceeding 850 degrees C and then decreased gradually, indicating that the combustion mechanism changed at such temperature. The increase of superficial gas velocity and oxygen concentration and the reduction of coal particle size had positive effects on promoting the combustion process, but their contributions became feeble as the superficial gas velocity and the oxygen concentration were respectively greater than 0.10 m/s and 50vol%, and the coal particle size was smaller than 74 mu m. The relations of reaction rate constant with various operating parameters were established. The kinetic parameters of pulverized coal combustion determined by MFBKA presented the same changing tendency as the results of thermogravimetric analysis (TGA), but the former apparent activation energy is relatively lower because of its optimized kinetic conditions. (C) 2013 Elsevier Ltd. All rights reserved.
WOS标题词	Science & Technology ; Physical Sciences ; Technology
类目[WOS]	Thermodynamics ; Energy & Fuels
研究领域[WOS]	Thermodynamics ; Energy & Fuels
关键词[WOS]	CIRCULATING FLUIDIZED-BED ; OXY-FUEL COMBUSTION ; PARTICLE-SIZE ; GASIFICATION ; TECHNOLOGY ; EMISSION ; CHINA ; O-2 ; CO2
收录类别	SCI
语种	英语
WOS记录号	WOS:000321228400058
公开日期	2015-05-27
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/13550]
专题	过程工程研究所_研究所（批量导入）
作者单位	1.Univ Sci & Technol Beijing, State Key Lab Adv Met, Beijing 100083, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Li, Zhengang,Guo, Zhancheng,Gong, Xuzhong,et al. Kinetic characteristics of pulverized coal combustion in the two-phase flow[J]. ENERGY,2013,55(0):585-593.
APA	Li, Zhengang,Guo, Zhancheng,Gong, Xuzhong,&Tang, Huiqing.(2013).Kinetic characteristics of pulverized coal combustion in the two-phase flow.ENERGY,55(0),585-593.
MLA	Li, Zhengang,et al."Kinetic characteristics of pulverized coal combustion in the two-phase flow".ENERGY 55.0(2013):585-593.