Abstract

A pilot scale pelletizer with a custom-made die temperature control system was used for pelletizing of a typical Nordic softwood blend in an experimental design where die temperature, moisture content, and steam conditioning were varied independently. Steam conditioning, expressed as material temperature, showed a strong negative correlation with the pelletizer motor current, but had no significant effect on other responses. Die temperature was negatively correlated to bulk density and durability. This negative correlation is contradictory to results from a pilot scale study where die temperature co-varied with other factors, and to results from single pelletizing studies that do not mimic the friction originated pressure build-up that is required for pellet formation (C) 2014 Elsevier B.V. All rights reserved.

Keywords

Moisture content; Bulk density; Durability; Compaction; Biomass; Fiber

Published in

Fuel Processing Technology
2014, Volume: 123, pages: 122-126

SLU Authors

• Segerström, Markus

  • Department of Forest Biomaterials and Technology, Swedish University of Agricultural Sciences
    

• Larsson, Sylvia

  • Department of Forest Biomaterials and Technology, Swedish University of Agricultural Sciences
    

UKÄ Subject classification

Applied Mechanics
Energy Engineering
Tribology


Publication identifier

DOI: https://doi.org/10.1016/j.fuproc.2014.02.008

Permanent link to this page (URI)

https://res.slu.se/id/publ/53242