Finite Rate Reaction Mechanism Adapted for Modelling Pseudo-Equilibrium Pyrolysis of Cellulose

Primer Autor
Mora Chandia, Tomas
Título
Finite Rate Reaction Mechanism Adapted for Modelling Pseudo-Equilibrium Pyrolysis of Cellulose
Editorial
MDPI
Revista
PROCESSES
Lenguaje
en
Resumen
This manuscript is related to a formulation for modelling 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, mainly that of char. The pseudo-equilibrium approach consists of the assumption that the solid phase devolatilisation can be described kinetically-at a finite rate-thus preserving the competitive characteristic between the production of char and tar, while the gas phase can be described directly by means of chemical equilibrium. The aforementioned approach gives a set of ordinary, linear, and nonlinear differential equations that are solved numerically with a consistent numerical scheme (i.e., the Totally Implicit Euler method). Chemical equilibrium was solved using CANTERA coupled with a code written in MATLAB. The results showed that the scheme preserved the tar-gas competitive characteristic for cellulose pyrolysis. The gas phase was defined as a mixture of CO2, CO, H2O, CH4, H-2, and N-2, showing a similar composition compared to models from the literature. Finally, the extension of the model to biomass in general is straightforward for including hemicellulose and lignin. The formulation is described in detail throughout the document in order to be replicated and evaluated for other biological components.
Tipo de Recurso
artículo original
doi
10.3390/pr10102131
Formato Recurso
PDF
Palabras Claves
cellulose
pyrolysis
chemical equilibrium
chemical kinetics
BIOMASS PYROLYSIS
KINETIC-MODEL
GASIFICATION PROCESS
BED REACTOR
WOOD
OPTIMIZATION
TEMPERATURE
PERFORMANCE
PREDICTION
PARAMETERS
Ubicación del archivo
http://dx.doi.org/10.3390/pr10102131
Categoría OCDE
Ingeniería
Química
Materias
celulosa
pirólisis
equilibrio químico
cinética química
PIRÓLISIS DE BIOMASA
MODELO CINÉTICO
PROCESO DE GASIFICACIÓN
REACTOR DE LECHO
MADERA
OPTIMIZACIÓN
TEMPERATURA
RENDIMIENTO
PREDICCIÓN
PARÁMETROS
Disciplinas de la OCDE
Ingeniería Química
Ingeniería en Procesos Químicos
Termodinámica
Título de la cita (Recomendado-único)
Finite Rate Reaction Mechanism Adapted for Modelling Pseudo-Equilibrium Pyrolysis of Cellulose
Identificador del recurso (Mandatado-único)
artículo original
Versión del recurso (Recomendado-único)
version publicada
License
CC BY 4.0
Condición de la licencia (Recomendado-repetible)
CC BY 4.0
Derechos de acceso
acceso abierto
Access Rights
acceso abierto
Id de Web of Science
WOS:000873637800001
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