Title:
Thermodynamic Model for the Ash Fraction Behavior in Biomass Gasification Using the Cantera Tool with the Nasa Polynomial Approach
Author(s):
Pecchi, M., Patuzzi, F., Baratieri, M.
Document(s):
Paper
Poster
Abstract:
This work uses the open source thermodynamic tool Cantera® to model the biomass gasification process for high ash-content substrates (e.g. digestate). The ash fraction is described as the mixture of different chemical species in the feedstock. A suitable database is created for the ash description using the NASA 9 method (instead of the embedded NASA 7). The enthalpy change of the different species is computed as a function of temperature, accounting also for the species phase-change. The results are compared with the ones obtained with a simplified ash-model (50% SiO2 and 50% CaO, no phase-change). The same procedure is also applied using wood as feedstock (low ash-content). The results obtained using the data from the literature confirm the suitability of the approximated method for low ash-content feedstocks, but, when the model is applied to high ash-content feedstocks, the differences between the two investigated methods become appreciable, suggesting the use of the NASA 9 method for the ash modelling.
Keywords:
gasification, modelling, wood, digestate, ashes
Topic:
Biomass Conversion Technologies for Heating, Cooling and Electricity
Subtopic:
Gasification for synthesis gas production
Event:
27th European Biomass Conference and Exhibition
Session:
2CV.4.19
Pages:
931 - 935
ISBN:
978-88-89407-19-6
Paper DOI:
10.5071/27thEUBCE2019-2CV.4.19
Price:
FREE
