Title:
Comprehensive Developments of the Distributed Activation Energy Model (DAEM) for Determining Pyrolysis Kinetic Parameters of Biomass Residues
Author(s):
Moreira, M.G., Rodrigues, P.P.O., Silveira, E.A.
Document(s):
Paper
Poster
Abstract:
Biomass is a promising green energy source, yet optimizing biomass conversion processes hinges on deeply comprehending the involved kinetic parameters. Acquiring this vital data relies on thermogravimetric experiments using the Distributed Activation Energy Model (DAEM), a prevalent tool for thermal decomposition analysis. However, the intricate mathematical nature of the DAEM equation poses challenges in determining its kinetic parameters using conventional curve-fitting software. This study addresses this hurdle by introducing and validating three numerical algorithms for solving the DAEM equation: a simplified approach developed by Miura-Maki, a discretized method by SCOTT, and the three-parallel-DAEM. To validate the model, existing literature on the pyrolysis of corn stalks and pinewood was used. The Miura-Maki method closely matched the reference data, with minimal mean error compared to the Scott method. Fluctuations were observed in pre-exponential factor values, particularly with the Scott method diverging from others, potentially leading to inaccuracies. Comparison of experimental and numerical predictions revealed higher accuracy with the Miura-Maki method. Additionally, for the three pseudo-component Distributed Activation Energy Model (DAEM), results were consistent with previous findings, demonstrating the effectiveness of the proposed approach in analyzing biomass degradation patterns accurately. Therefore, the findings affirm the satisfactory performance of both methods, underscoring the robustness of the developed numerical routine.
Keywords:
bioenergy, sustainability, thermochemical conversion, kinetic modeling
Topic:
Biomass Conversion to Intermediate Bioenergy Carriers and Sustainable Biofuels
Subtopic:
Pyrolysis
Event:
32nd European Biomass Conference and Exhibition
Session:
5BV.8.5
Pages:
762 - 768
ISBN:
978-88-89407-24-0
Paper DOI:
10.5071/32ndEUBCE2024-5BV.8.5
Price:
FREE
