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    Coal pyrolysis in a fluidized bed reactor simulating the process conditions of coal topping in CFB boiler

    Access Status
    Fulltext not available
    Authors
    Zhang, X.
    Dong, Li
    Zhang, J.
    Tian, Y.
    Xu, G.
    Date
    2011
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Zhang, X. and Dong, L. and Zhang, J. and Tian, Y. and Xu, G. 2011. Coal pyrolysis in a fluidized bed reactor simulating the process conditions of coal topping in CFB boiler. Journal of Analytical and Applied Pyrolysis. 91 (1): pp. 241-250.
    Source Title
    Journal of Analytical and Applied Pyrolysis
    DOI
    10.1016/j.jaap.2011.02.013
    ISSN
    0165-2370
    School
    Fuels and Energy Technology Institute
    URI
    http://hdl.handle.net/20.500.11937/55553
    Collection
    • Curtin Research Publications
    Abstract

    Simulating the conditions of pyrolytic topping in a fluidized bed reactor integrated into a CFB boiler, the study was devoted to the reaction fundamentals of coal pyrolysis in terms of the production characteristics of pyrolysis oil in fluidized bed reactors, including pyrolysis oil yield, required reaction time and the chemical species presented in the pyrolysis oil. The results demonstrated that the maximal pyrolysis oil yield occurred on conditions of 873 K, with a reaction time of 3 min and in a reaction atmosphere gas simulating the composition of pyrolysis gas. Adding H 2 and CO 2 into the reaction atmosphere decreased the pyrolysis oil yield, while the oil yield increased with increasing the CO and CH 4 contents in the atmosphere. TG-FTIR analysis was conducted to reveal the effects of reaction atmosphere on the chemical species present in the pyrolysis oil. The results clarified that the pyrolysis oil yield reached its maximum when the simulated pyrolysis gas was the reaction atmosphere, but there were slightly fewer volatile matters in the pyrolysis oil than the oil generated in the N 2 atmosphere. All of these results are expected not only to reveal the composition characteristics of the pyrolysis oil from different conditions of the coal topping process but also to optimize the pyrolysis conditions in terms of maximizing the light pyrolysis oil yield and quality.

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