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Numerical Modeling of Mass Loss and Temperature Profiles in the Thermal Decomposition of Bagasse in a Fixed Rectangular Oven


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DOI: https://doi.org/10.15866/ireme.v13i4.17033

Abstract


This work deals with the numerical study of the pyrolysis process in the thermochemical conversion of bagasse in an inert atmosphere and a two-dimensional numerical code (2D) of the reactions involved in the pyrolysis of bagasse of the sugarcane located in Morocco. The finite difference and the Range-Kutta method of second order have been used to simulate the pyrolysis of bagasse in a fixed rectangular oven of the bagasse. Transport modeling is made using homogenized equations at the Darcy scale. The thermal imbalance between the solid and the gas phase under the implementation of a temperature model of two fields has been revealed by previous studies, one for gas and one for solid. During this study, the aim has been to model the degradation of bagasse by pyrolysis. It is a very complex phenomenon that usually precedes the stage of heterogeneous combustion. The results provided by the numerical code developed are almost in agreement with the ones obtained by the experimental study presented in literature. This code is quite flexible; it can take into account different boundary conditions and allows changing easily the order of spatial discretization.
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Keywords


Bagasse; Modeling; Finite Difference; FORTRAN; Reactive Porous Media; Fixed Oven; Pyrolysis

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References


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