Computational Simulation of the Influence of Inert Particles on Incomplete Combustion of Methane at a Low Air Factor

    Volume 1, Issue 1

    ISSN: 2165-3992

    CODEN: MPCOAD

    Published Online: 1 September 2012

    Page Count: 14


    Gao, Weimin
    Institute for Frontier Materials, Deakin Univ., Geelong, VIC

    Kong, Lingxue
    Institute for Frontier Materials, Deakin Univ., Geelong, VIC

    Hodgson, Peter
    Institute for Frontier Materials, Deakin Univ., Geelong, VIC

    (Received 10 November 2011; accepted 1 May 2012)

    Abstract

    It is well known that the gas–solid system plays a significant role in many industrial processes. It is a complex physical and chemical process, generally consisting of heat transfer, mass transfer, species diffusion, and chemical reactions. In this paper, the reaction of methane with air at a low air factor and the gas flow in a fluidized bed with 0.1 mm solid particles are computationally simulated to enable the study of the effect of the inert particles on the species diffusion and the chemical reactions. The reaction of methane and air is modeled by a two-step reaction mechanism that produces a continuous fluid phase composed of six gases (CH4, CO, O2, CO2, H2O, and N2) and discrete solid particles in the reactor. The simulation results are compared with experiment and show that the finite rate model and the eddy dissipation model can well describe the reactions of gases in high-density gas–solid systems. The distribution of each gas and the particle behaviors are analyzed for incomplete combustion at different concentrations of loaded solid particles. The inert particles change the reactions by enhancing both the chemical kinetics and the species diffusion dynamics.


    Paper ID: MPC104531

    DOI: 10.1520/MPC104531

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    Author
    Title Computational Simulation of the Influence of Inert Particles on Incomplete Combustion of Methane at a Low Air Factor
    Symposium , 0000-00-00
    Committee B08