Multi-circulated gasification reactivity of coal char and its microstructure analysis

JING Xu-liang; WANG Zhi-qing; YU Zhong-liang; FANG Yi-tian

Volume 41 Issue 08

Aug. 2013

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JING Xu-liang, WANG Zhi-qing, YU Zhong-liang, FANG Yi-tian. Multi-circulated gasification reactivity of coal char and its microstructure analysis[J]. Journal of Fuel Chemistry and Technology, 2013, 41(08): 917-921.

Citation:

JING Xu-liang, WANG Zhi-qing, YU Zhong-liang, FANG Yi-tian. Multi-circulated gasification reactivity of coal char and its microstructure analysis[J]. Journal of Fuel Chemistry and Technology, 2013, 41(08): 917-921.

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Multi-circulated gasification reactivity of coal char and its microstructure analysis

1.
State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China;
2.
University of Chinese Academy of Sciences, Beijing 100049, China

Received Date: 2013-04-29
Rev Recd Date: 2013-06-17
Publish Date: 2013-08-30

Abstract

Abstract

To investigate the variation in gasification reactivity and microstructure of char from the multi-circulation fluidized bed gasifier, 3 chars from different rank coals were gasified in a simulated multi-circulated reactor (rapid heating-up fixed bed). The carbon conversion was calculated from the weight of residues, and the structure was analyzed by pore and XRD analyzer. The results show that with the increase of cycle time, the carbon conversion of low rank HLH lignite char increases while that of SM bituminous and JC anthracite chars decrease. The evolutions of BET surface area and micropore area have a peak value with the circulate time. The variation of graphitization is similar with the carbon conversion, which can be considered as the key factor to determine the carbon conversion.
- fluidized bed gasifier,
- surface area,
- carbon crystalline structure,
- gasification reactivity

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References(13)

References

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