Version 1
: Received: 24 February 2022 / Approved: 28 February 2022 / Online: 28 February 2022 (09:03:50 CET)
How to cite:
Mora, T. Finite Rate Reaction Mechanism Adapted for Modeling Pseudo-Equilibrium Pyrolysis of Cellulose. Preprints2022, 2022020351. https://doi.org/10.20944/preprints202202.0351.v1
Mora, T. Finite Rate Reaction Mechanism Adapted for Modeling Pseudo-Equilibrium Pyrolysis of Cellulose. Preprints 2022, 2022020351. https://doi.org/10.20944/preprints202202.0351.v1
Mora, T. Finite Rate Reaction Mechanism Adapted for Modeling Pseudo-Equilibrium Pyrolysis of Cellulose. Preprints2022, 2022020351. https://doi.org/10.20944/preprints202202.0351.v1
APA Style
Mora, T. (2022). Finite Rate Reaction Mechanism Adapted for Modeling Pseudo-Equilibrium Pyrolysis of Cellulose. Preprints. https://doi.org/10.20944/preprints202202.0351.v1
Chicago/Turabian Style
Mora, T. 2022 "Finite Rate Reaction Mechanism Adapted for Modeling Pseudo-Equilibrium Pyrolysis of Cellulose" Preprints. https://doi.org/10.20944/preprints202202.0351.v1
Abstract
This works is related to the modeling of cellulose pyrolysis with a pseudo equilibrium approach. The objective is to model the kinetics of the cellulose pyrolysis with a semi-global mechanism obtained from the literature, in order to obtain the yield and the rate of formation of char. The pseudo equilibrium sense consists in the supposition that the solid phase devolatilization can be described kinetically - at finite rate - , preserving the competitive characteristic between the production of char and tar, while the gas phase can be described by means of chemical equilibrium. A set of ordinary, linear and non linear, differential equations was obtained and solved numerically with a simple but consistent scheme using the Totally Implicit Euler method. Chemical equilibrium was solved using CANTERA coupled with a code written in Matlab. Results showed that the scheme preserve the tar-gas competitive characteristic for cellulose pyrolysis. The gas phase, is defined as a mixture of CO2, CO, H2O, CH4, H2 and N2 showed similarly composition compared with models from literature. Finally, the extension of the model to biomass in general, is straightforward, in order to include the hemicellulose and lignin.
Keywords
cellulose; pyrolysis; chemical equilibrium; chemical kinetics
Subject
Engineering, Energy and Fuel Technology
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
