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Modeling changes of fractal pore structures in coal pyrolysis

Coal pyrolysis processes are numerically investigated in mathematically produced coal pore models which simulate real coal pores in the parameters of the porosity and fractal dimension. The simulations include FG-DVC chemical reaction model, gas molecular diffusion in pores, energy conservation mode...

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Published in:	Fuel (Guildford) 2011-02, Vol.90 (2), p.499-504
Main Authors:	Chen, Yongli, Wang, Xiaoliang, He, Rong
Format:	Article
Language:	English
Subjects:	Applied sciences Coal Combustion Energy Energy. Thermal use of fuels Exact sciences and technology Fractal Fractal analysis Fractals Fuels Mathematical models Parents Pore Porosity Pyrolysis
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description	Coal pyrolysis processes are numerically investigated in mathematically produced coal pore models which simulate real coal pores in the parameters of the porosity and fractal dimension. The simulations include FG-DVC chemical reaction model, gas molecular diffusion in pores, energy conservation model and coal swelling model. Numerical results are verified by experimental results qualitatively, and they revealed that both the porosity and volatile contents of the parent coal can affect the fractal dimension of the final char pores after pyrolysis linearly. A formula to predict the fractal dimension of char pores from its parent coal properties is obtained by curve fitting in numerous results.
doi_str_mv	10.1016/j.fuel.2010.10.016
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subjects	Applied sciences Coal Combustion Energy Energy. Thermal use of fuels Exact sciences and technology Fractal Fractal analysis Fractals Fuels Mathematical models Parents Pore Porosity Pyrolysis
title	Modeling changes of fractal pore structures in coal pyrolysis
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