Kinetic Model for Simulating the Evolution of Particle Size Distributions During Char Combustion

Abstract

The details of a numerical simulation of particle size distribution evolution during ash-free char oxidation are presented. This work represents the first application of the population balance modeling approach to char combustion, and includes the effects of both oxidation and fragmentation. The simulation consists essentially of a transfer function 'hat determines the evolution of the entire char particle size distribution with lime. Determination of the input parameters to the model, and the sensitivity of the results to variations in these parameters are discussed.