Title:
Effect of Inorganics on Pyrolysis and Gasification of Woody and Non-Woody Biomass: Assessment of the Accuracy of Chemical Kinetic Modeling
Author(s):
Ferreiro, A.I., Segurado, R., Mendes, M.A.A., Costa, M., Giudicianni, P., Ragucci, R., Rivas, F.J., Abián, M., Alzueta, M.U.
Document(s):
Paper
Poster
Abstract:
This study analyses the effect of inorganics in biomass pyrolysis and gasification. The experiments were carried out at low heating rates to isolate the chemical reactions from heat and mass transfer limitations. Three different types of biomass were used: walnut shells, hardwood and softwood. The experimental results clearly show the catalytic effects caused by the presence of inorganics and that these effects are enhanced in the samples with higher potassium concentration. In addition, a kinetic model was implemented in Python using Cantera chemical kinetics library and a kinetic mechanism that includes product speciation was considered. Model predictions show that an optimized mechanism follows the demineralized experimental profiles with slightly better accuracy, when compared with the raw experimental profiles. Nevertheless, the optimized mechanism is not able to predict the gas phase release. Experimental tests that include the collection of liquids are necessary to provide additional data for supporting the improvement of the current pyrolysis kinetic mechanism. In this respect, before including the effects of gasification and alkali and alkali earth metals in the mechanism, it is crucial to firstly predict with accuracy the pyrolysis experimental profiles.
Keywords:
biomass, gasification, pyrolysis, kinetic modeling, catalytic effects
Topic:
Biomass Conversion for Bioenergy
Subtopic:
Gasification for synthesis gas production
Event:
30th European Biomass Conference and Exhibition
Session:
4CV.5.8
Pages:
794 - 800
ISBN:
978-88-89407-22-6
Paper DOI:
10.5071/30thEUBCE2022-4CV.5.8
Price:
FREE
