To analyze the co-combustion process of coal and biomass in a steam boiler furnace originally designed for pulverized coal combustion, it is crucial first to investigate the dynamic behavior of particles within the aero-mixture channels. Due to differences in material properties and particle size distributions, the behavior of coal and biomass particles can vary significantly. This study numerically models particle dynamics using a simulation approach based on a previously validated Euler-Lagrange computational fluid dynamics (CFD) model. The simulation results reveal key differences in the trajectories and velocities of coal and biomass particles, primarily caused by variations in their density and size. The primary objective of this research is to identify and quantify the factors that influence particle dynamics, as well as to determine the interdependencies between them. The findings aim to provide valuable insights for optimizing burner design and enhancing the efficiency of the co-combustion process. Furthermore, the results contribute to a broader understanding of biomass particle behavior in multiphase flows, which is particularly important in the context of transitioning towards sustainable and low-emission energy systems.
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The author would like to express his gratitude to JP Elektroprivreda BiH for providing technical support during the course of the research.
