Effects of thermal treatment on energy density and hardness of torrefied wood pellets
- Univ. of British Columbia, Vancouver (Canada)
- Univ. of British Columbia, Vancouver (Canada); Univ. of Science and Technology Beijing, Beijing (China)
- Univ. of British Columbia, Vancouver (Canada); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Univ. of British Columbia, Vancouver (Canada); Univ. of Toronto, Toronto (Canada)
Here, three types of wood pellets samples, including two types of commercial pellets and one type of lab-made control pellets were torrefied in a fixed bed unit to study the effect of thermal pretreatment on the quality of wood pellets. The quality of wood pellets was mainly characterized by the pellet density, bulk density, higher heating value, Meyer hardness, saturated moisture uptake, volumetric energy density, and energy yield. Results showed that torrefaction significantly decreased the pellet density, hardness, volumetric energy density, and energy yield. The higher heating value increased and the saturated moisture content decreased after torrefaction. In view of the lower density, lower hardness, lower volumetric energy density, and energy yield of torrefied pellets, it is recommended that biomass should be torrefied and then compressed to make strong pellets of high hydrophobicity and volumetric energy density.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1335310
- Journal Information:
- Fuel Processing Technology, Vol. 129, Issue C; ISSN 0378-3820
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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