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Isothermal Gasification of in Situ/ex Situ Coal Char with CO2 in a Micro Fluidized Bed Reaction Analyzer
Wang, Fang1; Zeng, Xi2; Shao, Ruyi3; Wang, Yonggang1; Yu, Jian2; Xu, Guangwen2
2015-08-01
Source PublicationENERGY & FUELS
ISSN0887-0624
Volume29Issue:8Pages:4795-4802
Abstract

The so-called micro fluidized bed reaction analyzer (MFBRA) was adopted to implement the isothermal gasification of in situ coal char with CO2 under minimized external diffusion inhibition. It was done by keeping the reaction atmosphere and temperature in the MFBRA for both coal pyrolysis and char gasification. This was further compared to the gasification of two other kinds of ex situ chars. While the gasification of ex situ char 1 referred to the coal pyrolysis in Ar and then CO2 gasification of the resulting hot char without thermal annealing (cooling) in the same MFBRA, that of the ex situ char 2 was by first a separate coal pyrolysis in Ar and then gasification of the char in the MFBRA after thermal annealing (cooling). Reaction characterization and kinetic parameters based on the measured time-series product gas composition of CO clarified that the in situ coal char had the highest gasification reactivity and the lowest activation energy, whereas the ex situ coal char 2 showed the lowest gasification reactivity and the highest activation energy. Comparing the gasification behavior of chars made with Yima (YM) bituminous coal and Xilinhaote (XLHT) lignite further demonstrated that the char of XLHT lignite had the higher reactivity and smaller activation energy, complying with the higher gasification activity of lignite char than that of bituminite char.

SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1021/acs.energyfuels.5b00676
Indexed BySCI
Language英语
WOS KeywordPYROLYSIS CONDITIONS ; REACTION-KINETICS ; BITUMINOUS COAL ; IN-SITU ; BIOMASS ; H2O ; COMBUSTION ; CONVERSION ; MIXTURES ; STEAM
WOS Research AreaEnergy & Fuels ; Engineering
WOS SubjectEnergy & Fuels ; Engineering, Chemical
WOS IDWOS:000360026700014
Citation statistics
Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/19475
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
3.Inner Mongolia Univ Technol, Coll Chem Engn, Hohhot 010051, Inner Mongolia, Peoples R China
Recommended Citation
GB/T 7714
Wang, Fang,Zeng, Xi,Shao, Ruyi,et al. Isothermal Gasification of in Situ/ex Situ Coal Char with CO2 in a Micro Fluidized Bed Reaction Analyzer[J]. ENERGY & FUELS,2015,29(8):4795-4802.
APA Wang, Fang,Zeng, Xi,Shao, Ruyi,Wang, Yonggang,Yu, Jian,&Xu, Guangwen.(2015).Isothermal Gasification of in Situ/ex Situ Coal Char with CO2 in a Micro Fluidized Bed Reaction Analyzer.ENERGY & FUELS,29(8),4795-4802.
MLA Wang, Fang,et al."Isothermal Gasification of in Situ/ex Situ Coal Char with CO2 in a Micro Fluidized Bed Reaction Analyzer".ENERGY & FUELS 29.8(2015):4795-4802.
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