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Characterization of coal char gasification with steam in a micro-fluidized bed reaction analyzer
Wang, Fang1; Zeng, Xi2; Wang, Yonggang1; Yu, Jian2; Xu, Guangwen2
2016
Source PublicationFUEL PROCESSING TECHNOLOGY
ISSN0378-3820
Volume141Issue:JANPages:2-8
AbstractIn this study, the so-called micro-fluidized bed reaction analyzer (MFBRA) was used to characterize the isothermal reaction of char gasification with steam at 0.1 MPa. With minimal inhibition of heat and mass transfer, the article examined the effect of reaction temperature and partial pressure of steam on char gasification behavior and reaction kinetics. It was found that at the experimental temperatures varying in 750-1100 degrees C, the charsteam gasification reaction can be divided into two regions according to temperatures of 750-950 degrees C and 950-1100 degrees C. The reaction was well described by the shrinking core model, and the activation energies of charsteam gasification in such two regions are 166.94 kJ/mol and 79.4 kJ/mol, respectively. The activation energy in the kinetically controlled low-temperature region is very similar to that reported in the literatures, validating the reliability of MFBRA for characterizing char gasification and estimating its kinetics. Furthermore, the reaction order for steam partial pressure was found to be about 0.5 under the tested conditions. (C) 2015 Elsevier B.V. All rights reserved.
KeywordMicro-fluidized Bed (Mfb) Mfbra Char-steam Gasification Kinetics Isothermal Differential Reaction
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1016/j.fuproc.2015.04.025
Indexed BySCI
Language英语
WOS KeywordDIFFERENT PYROLYSIS TEMPERATURES ; CARBON-DIOXIDE ; HYDROGEN-PRODUCTION ; KINETICS ; BIOMASS ; CO2 ; PARAMETERS ; COMBUSTION ; DIFFUSION ; METHANE
WOS Research AreaChemistry ; Energy & Fuels ; Engineering
WOS SubjectChemistry, Applied ; Energy & Fuels ; Engineering, Chemical
Funding OrganizationNatural Science Foundation of China(21306209) ; National Basic Research Program of China(2014CB744303) ; Strategic Priority Research Program of CAS on Clean and High-efficiency Utilization of Low-rank Coal(XDA07010100) ; National Natural Science Foundation of China(U1302273)
WOS IDWOS:000366779200002
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Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/20188
Collection多相复杂系统国家重点实验室
Affiliation1.China Univ Min & Technol Beijing, Sch Chem & Environm Engn, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Wang, Fang,Zeng, Xi,Wang, Yonggang,et al. Characterization of coal char gasification with steam in a micro-fluidized bed reaction analyzer[J]. FUEL PROCESSING TECHNOLOGY,2016,141(JAN):2-8.
APA Wang, Fang,Zeng, Xi,Wang, Yonggang,Yu, Jian,&Xu, Guangwen.(2016).Characterization of coal char gasification with steam in a micro-fluidized bed reaction analyzer.FUEL PROCESSING TECHNOLOGY,141(JAN),2-8.
MLA Wang, Fang,et al."Characterization of coal char gasification with steam in a micro-fluidized bed reaction analyzer".FUEL PROCESSING TECHNOLOGY 141.JAN(2016):2-8.
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