Impact of torrefaction on syngas production from wood

Couhert Carole, Salvador Sylvain, Commandre Jean-Michel. 2009. Impact of torrefaction on syngas production from wood. Fuel, 88 (11) : 2286-2290.

Quartile : Q1, Sujet : ENGINEERING, CHEMICAL / Quartile : Q1, Sujet : ENERGY & FUELS

Résumé : Torrefaction is a way to treat biomass before transportation or thermochemical conversion. It can be used to increase the energy content of wood or to facilitate grinding. The purpose of this paper was to quantify the impact of such a treatment on the behaviour of wood during gasification by steam at high temperature to produce syngas. The aspects of both gas yields and reaction kinetics were considered. Beechwood was submitted both to light torrefaction and severe torrefaction, using a specially designed crossed fixed bed reactor. The initial wood and the torrefied woods were first characterised, then gasified in a new laboratory high-temperature entrained flow reactor (HT-EFR) at 1400 _C for 2 s in an atmosphere containing 20 vol% steam in N2. The syngas produced was then analysed. The experiments were modelled using a thermo-dynamical equilibrium approach. It was confirmed that torrefaction decreased the O/C ratio. The quantity of syngas produced increased with the severity of the torrefaction. The equilibrium approach describes the results satisfactorily. Gasification experiments carried out at a lower temperature - 1200 _C - indicated that the chars from torrefied woods are less reactive towards steam than the char from wood.

Mots-clés Agrovoc : bois, traitement thermique, bioénergie, biomasse, gazéification, torréfaction

Classification Agris : K50 - Technologie des produits forestiers
P06 - Sources d'énergie renouvelable

Champ stratégique Cirad : Axe 2 (2005-2013) - Biomasse énergie et sociétés du sud

Auteurs et affiliations

• Couhert Carole, Ecole des mines d'Albi (FRA)
• Salvador Sylvain, Ecole des mines d'Albi (FRA)
• Commandre Jean-Michel, CIRAD-PERSYST-UPR Biomasse-énergie (FRA) ORCID: 0000-0001-9094-7879

Source : Cirad - Agritrop (https://agritrop.cirad.fr/550079/)

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