Volume 5: Innovative Solutions for Energy Transitions: Part IV

Modeling of Biomass Combustion in the Packed Bed Using CFD-DEM Hongpeng Xu, Anqi Zhou, Zhenwei Li, Wenmimg Yang

Abstract

The combustion characteristics of biomass in the packed bed is investigated based on the CFD-discrete element method (DEM). During the combustion process, the biomass particle experienced drying, pyrolysis, combustion and cooling. The mass loss leads to the change of particle density and diameter, as the remnant composition is mainly ash. In this work, the shrinkage of packed biomass volume is modelled as the particle diameter is decreased based on DEM. The different effects of compositions in the particle on particle diameter are considered. The simulation results show good agreement with the experimental measurement.

Keywords biomass combustion, DEM, packed bed, simulation