The Effect of Pellet Length on Mechanical Durability and Breakage Behaviour of Torrefied Biomass

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Abstract

The transportation, handling, and storage of biomass pellets are challenging due to pellet breakage and fines generation. The amount of fines generated during transportation and handling of biomass pellets is mostly measured in the laboratory using mechanical durability testers such as tumbling can method according to ISO 17831-1. This standard sets requirements on the amount of pellets, but not on the pellet length distribution (PLD) to be used for the mechanical durability measurements. This study aims to investigate the effect of PLD on the mechanical durability of biomass pellets. Two different types of torrefied biomass of Poplar and Mixed wood were used in this study. Samples were classified into three different groups of shorter than 15 mm, between 15 and 30 mm, and longer than 30 mm before durability test. In addition, a random PLD was considered as a reference case. The results show that the mechanical durability strongly depends on the PLD and increases from 83.6% to 96.4% for torrefied Poplar and from 92.7% to 98.5% for torrefied Mixed wood by increasing the PLD from shorter than 15 mm to longer than 30 mm. Therefore, it is highly recommended to consider the PLD of the pellet samples before durability tests.
Original languageEnglish
Title of host publicationProceedings of the 13th International Conference on Bulk Materials Storage, Handling and Transportation
PublisherUniversity of Newcastle
Number of pages7
Publication statusPublished - 2019
EventICBMH 2019: 13th International Conference on Bulk Materials Storage, Handling and Transportation - Gold Coast, Australia
Duration: 9 Jul 201911 Jul 2019

Conference

ConferenceICBMH 2019: 13th International Conference on Bulk Materials Storage, Handling and Transportation
CountryAustralia
CityGold Coast
Period9/07/1911/07/19

Bibliographical note

Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care

Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Keywords

  • Biomass Pellets
  • Mechanical Durability
  • Breakage Behavior
  • Pellet Length Distribution

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