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Thermogravimetric analysis on gasification reactivity of Hailar lignite

Influence of inherent mineral matters and external ash

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Abstract

Comparative studies on the Hailar lignite pyrolysis/gasification characteristics at N2/CO2 atmosphere and the influence of inherent mineral matters, external ash and pyrolysis temperature on its reactivity during gasification at CO2 atmosphere were conducted by non-isothermal thermogravimetric analysis, FTIR, and X-ray diffraction (XRD) analysis. Thermogravimetric test results show that the atmosphere of N2 or CO2 almost has no effects on the pyrolysis behavior, and the gasification reaction under CO2 atmosphere occurs over 943 K at the heating rate of 40 K min−1. The external ash prepared at 1173 and 1223 K shows a certain catalytic effect on promoting the gasification reaction, although the inherent mineral matters of Hailar lignite are found in stronger catalytic effects on gasification than the external ash. The lignite gasification reactivity decreases with increasing pyrolytic temperature between 1073 and 1273 K.

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Acknowledgements

Financial support from the Project of Knowledge Innovation Program of the Chinese Academy of Sciences (Grant No. KGCX2-YW-396) and National Natural Science Foundation of China (Grant No. 20221603).

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Authors and Affiliations

  1. State Key Laboratory of Multi-phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, People’s Republic of China

    Ao Hou, Ze Wang, Wenli Song & Weigang Lin

  2. Graduate University, Chinese Academy of Sciences, Beijing, 100049, People’s Republic of China

    Ao Hou

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  1. Ao Hou
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  2. Ze Wang
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Correspondence to Wenli Song.

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Hou, A., Wang, Z., Song, W. et al. Thermogravimetric analysis on gasification reactivity of Hailar lignite. J Therm Anal Calorim 109, 337–343 (2012). https://doi.org/10.1007/s10973-011-1712-5

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  • DOI: https://doi.org/10.1007/s10973-011-1712-5

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