Couverture de A Study of Softwood Torrefaction and Densification
Titre du livre:

A Study of Softwood Torrefaction and Densification

For the Production of High Quality Wood Pellets

LAP LAMBERT Academic Publishing (05-08-2012 )

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ISBN-13:

978-3-659-20331-2

ISBN-10:
3659203319
EAN:
9783659203312
Langue du livre:
Anglais
texte du rabat:
Canada has become a major producer and exporter of wood pellets in the world. But the low water resistivity and the high transportation cost impede the market development. Torrefaction may provide a solution. The present study developed the torrefaction kinetics, studied the torrefaction reaction conditions in two bench-scale reactors, and identified the suitable conditions for making durable torrefied pellets in a press machine. The weight loss of softwood significantly depended on the torrefaction temperature, the residence time, the particle size, and the oxygen concentration in the carrier gas. A two-component and one-step first order reaction kinetic model gave a good agreement with the weight loss range of 0 to 40% at the temperature of 260-300 oC. Considering the quality of torrefied pellets, the optimal torrefaction conditions appeared to correspond to a weight loss of about 30%, which gave a 20% increase in pellet heating value. The suitable densification conditions corresponded to a die temperature of 230 oC, or over 110 oC for torrefied samples conditioned to 10% moisture content.
Maison d'édition:
LAP LAMBERT Academic Publishing
Site Web:
https://www.lap-publishing.com/
de (auteur) :
Jianghong Peng
Numéro de pages:
296
Publié le:
05-08-2012
Stock:
Disponible
Catégorie:
Tecnologie Chimique
Prix:
523.77 R$
Mots-clés:
Softwood; Torrefaction; Densification; Torrefied Pellets.

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