Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
EXPERIMENTAL AND NUMERICAL STUDY OF COAL AND BIOMASS CO-FIRING IN A DROP TUBE FURNACE
Submission Author:
Amanda Tavares de Oliveira , SP , Brazil
Co-Authors:
Amanda Tavares de Oliveira, Vítor Lumertz, Fernando Pereira, Juliana Pohlmann, Roberto Coelho Andriotti
Presenter: Amanda Tavares de Oliveira
doi://10.26678/ABCM.COBEM2021.COB2021-0343
Abstract
This study is performed to find optimized kinetic parameters for devolatilization and heterogeneous combustion of char for co-firing of coal and biomass combining a numerical modeling with experimental results. The experimental investigation is carried out in a Drop Tube Furnace for different proportions of coal and biomass. Brazilian coal and rice husk are used and their samples are evaluated to obtain their size distribution and composition. Detailed information for particle burnout are extracted along the axis of the furnace at 1100 ºC, according to the ash-as-tracer method. Using the experimental results obtained in the DTF as input data, the numerical model adopted in this work simulates the combustion evolution considering a particle size distribution of fuels. Therefore, the numerical solution estimates the kinetic parameters that have best fit with the behavior of the fuel obtained during experimental tests. There are still important uncertainties related to the experiments, but the numerical results suggest that the model can be used to predict kinetic parameters of these solid fuels.
Keywords
Biomass, Co-firing, Kinetic parameters, Numerical Modeling, Drop tube furnace
