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Two-dimensional model of methane thermal decomposition reactors with radiative heat transfer and carbon particle growth

Authors

  • Cyril Caliot,

    Corresponding author
    1. Processes, Materials, and Solar Energy Laboratory, PROMES-CNRS, Centre F. Trombe, 7 Rue du Four Solaire, 66120 Odeillo Font-Romeu, France
    • Processes, Materials, and Solar Energy Laboratory, PROMES-CNRS, Centre F. Trombe, 7 Rue du Four Solaire, 66120 Odeillo Font-Romeu, France
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  • Gilles Flamant,

    Corresponding author
    1. Processes, Materials, and Solar Energy Laboratory, PROMES-CNRS, Centre F. Trombe, 7 Rue du Four Solaire, 66120 Odeillo Font-Romeu, France
    • Processes, Materials, and Solar Energy Laboratory, PROMES-CNRS, Centre F. Trombe, 7 Rue du Four Solaire, 66120 Odeillo Font-Romeu, France
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  • Giorgos Patrianakos,

    1. Aerosol and Particle Technology Laboratory (APTL), Chemical Process Engineering Research Institute (CPERI), Centre for Research and Technology Hellas (CERTH), 6th km Charilaou - Thermi Road, Thermi 57001, Thessaloniki, Greece
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  • Margaritis Kostoglou,

    1. Dept. of Chemistry, Aristotle University of Thessaloniki, University Box 116, Thessaloniki 54124, Greece
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  • Athanasios G. Konstandopoulos

    1. Dept. of Chemical Engineering, Aristotle University of Thessaloniki, P. O. Box 1517, Thessaloniki 54006, Greece
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Abstract

A two-dimensional model of methane thermal decomposition reactors is developed which accounts for coupled radiative heat and polydisperse carbon particle nucleation, growth, and transport. The model uses the Navier–Stokes equations for the fluid dynamics, the radiative transfer equation for methane and particle species radiation absorption, the advection–diffusion equation for gas and particle species transport, and a sectional method for particle species nucleation, heterogenous growth, and coagulation. The model is applied to a tubular laminar flow reactor. The simulation results indicate the development of a reaction boundary layer inside the reactor, which results in significant variation of the local particle size distribution across the reactor. © 2011 American Institute of Chemical Engineers AIChE J, 58: 2545–2556, 2012

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