Reaction-diffusion model for steam gasification of single char particle: Implementation using finite difference method

Jessica Ortiz Florenciano, Diego González Weiberlen, Hyun Ho Shin

Resumo



Numerical simulations are powerful tools to study and analyze gasification processes. Among the applicable models, Computational Fluid Dynamics (CFD) models allow a detailed description of the phenomena taking place inside gasification reactors [1, 2]. The aim of this work is to provide a tool for the development of the terms associated to reaction kinetics needed for CFD models. Thus, the unsteady state steam gasification of a spherical porous char particle using the reaction-diffusion model, presented by [3], is implemented. This model simultaneously describes the kinetics of gasification reactions and the diffusion transport of gaseous species inside the particle.


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