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General modeling and numerical simulation of the burning characteristics of porous chars
Wang, Xiaohan1; Zeng, Xiaojun; Yang, Haolin; Zhao, Daiqing
2012-07-01
Source PublicationCOMBUSTION AND FLAME
Volume159Issue:7Pages:2457-2465
AbstractThe modeling and numerical simulation of char burning rate within the temperature range of 1273-1700 K, which is the normal range in most boilers and furnaces, were carried out in this paper. Considering the differences in pore structure between char and non-porous carbon, several key issues were studied and discussed, including fresh char reactivity and its change during the burning process, and the effects of internal oxygen diffusion on the char burning rate. In the section of modeling, dozens of model equations were given and then implanted into the computational code. In the section of numerical simulation, the predicted values were compared with the experimental data gained from the entrained flow reactor including carbon conversion and apparent diameter change of coal char along the tube length, and good agreement was obtained. Additionally, the numerical simulation for biomass char burning was also done and the applicability of the developed model was discussed. The developed char burning model needs few empirical parameters, which can be used conveniently in the numerical simulation of actual combustion process. (C) 2012 The Combustion Institute. Published by Elsevier Inc. All rights reserved.
SubtypeArticle
KeywordChar Burning Modeling Numerical Simulation Coal Biomass
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1016/j.combustflame.2012.02.025
WOS Subject ExtendedThermodynamics ; Energy & Fuels ; Engineering
WOS KeywordCOAL CHARS ; CARBON PARTICLE ; KINETIC-PARAMETERS ; PULVERIZED COAL ; COMBUSTION ; GASIFICATION ; OXIDATION ; ACTIVATION ; IGNITION ; BIOMASS
Indexed BySCI
Language英语
WOS SubjectThermodynamics ; Energy & Fuels ; Engineering, Multidisciplinary ; Engineering, Chemical ; Engineering, Mechanical
WOS IDWOS:000304213700020
Citation statistics
Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/10564
Collection中国科学院广州能源研究所
Affiliation1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
2.Chinese Acad Sci, Key Lab Renewable Energy & Gas Hydrate, Guangzhou 510640, Guangdong, Peoples R China
First Author AffilicationGuangZhou Institute of Energy Conversion,Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Wang, Xiaohan,Zeng, Xiaojun,Yang, Haolin,et al. General modeling and numerical simulation of the burning characteristics of porous chars[J]. COMBUSTION AND FLAME,2012,159(7):2457-2465.
APA Wang, Xiaohan,Zeng, Xiaojun,Yang, Haolin,&Zhao, Daiqing.(2012).General modeling and numerical simulation of the burning characteristics of porous chars.COMBUSTION AND FLAME,159(7),2457-2465.
MLA Wang, Xiaohan,et al."General modeling and numerical simulation of the burning characteristics of porous chars".COMBUSTION AND FLAME 159.7(2012):2457-2465.
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