Reaction–Diffusion Model for Gasification of a Shrinking Single Carbon-Anode Particle
Mohammad Kavand, Roozbeh Mollaabbasi, Donald Ziegler, Faı̈çal Larachi, Donald Picard, Houshang Alamdari
Abstract
at 1233 K. The experiments were performed in a thermogravimetric analyzer (TGA). Good agreement between the model results and the experimental data showed that this approach could quantify with success the gasification kinetics and the gas distribution within the anode particle. In addition, the Langmuir-Hinshelwood (L-H) model is used in order to capture the inhibition effect of carbon monoxide on the gasification reaction. The effectiveness factor and Thiele modulus simulated for various particle sizes helped assess the evolution of the relative dominance of diffusion and chemical reactions during the gasification process.
Topics & Concepts
Carbon fibersParticle (ecology)Materials scienceAnodeCarbon monoxideDiffusionReaction rateParticle sizeChemistryThermodynamicsChemical engineeringPhysical chemistryComposite materialPhysicsOrganic chemistryElectrodeComposite numberGeologyOceanographyCatalysisEngineeringThermochemical Biomass Conversion ProcessesThermal and Kinetic AnalysisIron and Steelmaking Processes