The aim of this work consists in proposing an extended kinetic analysis dedicated to torrefaction process and applied to three different type of biomasses: ash-wood, beech-wood and hornbeam. As specific object this study investigates the reliability of the isoconversional “model free” methods in determining the kinetic triplet of the global torrefaction kinetics: the activation energy Ea, the f(a) model function and the pre-exponential factor A. The methods adopted in this investigation are based on the utilization of suitable TGA experimental measurements integrated on an innovative modelling scheme based on isoconversional approaches applied to both integral and differential methods. The obtained results confirm the high reliability of the adopted methods in determining, in particular, the activation energy Ea of the torrefaction reaction. The introduced computational procedure allows to extend the good accuracy level in describing the global kinetics of the biomasses decomposition within the torrefaction ranges. As main conclusions this investigation confirms that the proposed “model free” approach, integrated with the proposed extended procedure, represents an improved alternative to traditional kinetics methodology of significant impact to improve the kinetics of torrefaction process.

A COMPLETE KINETIC MODEL FOR BIOMASS TORREFACTION BASED ON AN ISOCONVERSIONAL APPROACH / Brighenti, Marco; Grigiante, Maurizio; Carlesso, M.; Antolini, Daniele. - ELETTRONICO. - (2016), pp. 838-850. (Intervento presentato al convegno wasteeng2016 tenutosi a Albi (France) nel 23-26, maggio 2016).

A COMPLETE KINETIC MODEL FOR BIOMASS TORREFACTION BASED ON AN ISOCONVERSIONAL APPROACH

Brighenti, Marco;Grigiante, Maurizio;Antolini, Daniele
2016-01-01

Abstract

The aim of this work consists in proposing an extended kinetic analysis dedicated to torrefaction process and applied to three different type of biomasses: ash-wood, beech-wood and hornbeam. As specific object this study investigates the reliability of the isoconversional “model free” methods in determining the kinetic triplet of the global torrefaction kinetics: the activation energy Ea, the f(a) model function and the pre-exponential factor A. The methods adopted in this investigation are based on the utilization of suitable TGA experimental measurements integrated on an innovative modelling scheme based on isoconversional approaches applied to both integral and differential methods. The obtained results confirm the high reliability of the adopted methods in determining, in particular, the activation energy Ea of the torrefaction reaction. The introduced computational procedure allows to extend the good accuracy level in describing the global kinetics of the biomasses decomposition within the torrefaction ranges. As main conclusions this investigation confirms that the proposed “model free” approach, integrated with the proposed extended procedure, represents an improved alternative to traditional kinetics methodology of significant impact to improve the kinetics of torrefaction process.
2016
Proceedings of The 6th International Conference on Engineering for Waste and Biomass Valorisation (WasteEng2016)
Albi (France)
Springer
Brighenti, Marco; Grigiante, Maurizio; Carlesso, M.; Antolini, Daniele
A COMPLETE KINETIC MODEL FOR BIOMASS TORREFACTION BASED ON AN ISOCONVERSIONAL APPROACH / Brighenti, Marco; Grigiante, Maurizio; Carlesso, M.; Antolini, Daniele. - ELETTRONICO. - (2016), pp. 838-850. (Intervento presentato al convegno wasteeng2016 tenutosi a Albi (France) nel 23-26, maggio 2016).
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/147293
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