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Non-isothermal coal char gasification with CO2 in a micro fluidized bed reaction analyzer and a thermogravimetric analyzer
Wang, Fang1,2; Zeng, Xi1; Wang, Yonggang2; Su, Hui2; Yu, Jian1; Xu, Guangwen1
2016-01-15
Source PublicationFUEL
ISSN0016-2361
Volume164Issue:JANPages:403-409
AbstractThe so-called micro fluidized bed reaction analyzer (MFBRA) and a thermogravimetric analyzer (TGA) were adopted to comparatively investigate the non-isothermal gasification of coal char with CO2. Experimental results demonstrated that heating rate obviously affected the coal char gasification reaction. Raising heating rate evidently increased the temperatures at the initiating reaction (T-i), the maximal reaction rate (T-m) and the finishing reaction (T-f). Nonetheless, it decreased the char conversion at a given reaction temperature and also the activation energy estimated by the single heating rate method. Comparing the data tested by TGA and MFBRA under the same heating rate clarified that the temperatures of T-i, T-m, and T-f were all relatively lower for MFBRA. The difference for such characteristic reaction temperatures between TGA and MFBRA increased with raising the heating rate. The measurement in MFBRA also led to the higher activation energy estimated according to both the single heating rate and the combination heating rate methods. Perhaps all these results are attributed to the lower limitation from heat and transfer including gas diffusion in MFBRA than in TGA. (C) 2015 Published by Elsevier Ltd.
KeywordMicro Fluidized Bed Char Gasification Reaction Kinetics Non-isothermal Reaction
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.fuel.2015.09.084
Indexed BySCI
Language英语
WOS KeywordKINETIC-ANALYSIS ; CARBON-DIOXIDE ; STEAM ; DIFFUSION ; PYROLYSIS ; MODEL
WOS Research AreaEnergy & Fuels ; Engineering
WOS SubjectEnergy & 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(XDA07050400) ; National Instrumentation Grant Program(2011YQ120039)
WOS IDWOS:000363476000048
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/19752
Collection多相复杂系统国家重点实验室
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.China Univ Min & Technol Beijing, Sch Chem & Environm Engn, Beijing 100083, Peoples R China
Recommended Citation
GB/T 7714
Wang, Fang,Zeng, Xi,Wang, Yonggang,et al. Non-isothermal coal char gasification with CO2 in a micro fluidized bed reaction analyzer and a thermogravimetric analyzer[J]. FUEL,2016,164(JAN):403-409.
APA Wang, Fang,Zeng, Xi,Wang, Yonggang,Su, Hui,Yu, Jian,&Xu, Guangwen.(2016).Non-isothermal coal char gasification with CO2 in a micro fluidized bed reaction analyzer and a thermogravimetric analyzer.FUEL,164(JAN),403-409.
MLA Wang, Fang,et al."Non-isothermal coal char gasification with CO2 in a micro fluidized bed reaction analyzer and a thermogravimetric analyzer".FUEL 164.JAN(2016):403-409.
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