Mechanical and energy examination of different agripellets

Viktória Papp; Sándor Beszédes; Dóra Szalay

doi:10.14232/analecta.2019.1.40-47

Authors

Viktória Papp University of Sopron, Faculty of Forestry
Sándor Beszédes University of Szeged, Faculty of Engineering http://orcid.org/0000-0003-2301-765X
Dóra Szalay University of Sopron, Faculty of Forestry

DOI:

https://doi.org/10.14232/analecta.2019.1.40-47

Keywords:

agripellet, rape seed stem, wheat straw, sunflower husk

Abstract

As an indirect consequence of climate change, the reduction of carbon dioxide emissions, the energy utilization of agricultural by-products will be increasingly emphasized in the future. Hungary has a large potential of agricultural residues of which is a big part could be used for energy purposes. Common feature of this by-products is that thay are originally difficult to handle and they have a small bulk density. Pellet production is one possible way to utilization, however the high ash content and low ash melting point cause problems in pellet burner equipments. Mixtures of different plant residues (wheat straw, rape seed stem, sunflower husk) and agripellets have different energetic and mechanical properties. Besides high ash content and low ash softening temperature, mechanical properties can also significantly affect the quality of pellets as well as the efficiency of firing. There were also significant differences in diameter, length, bulk density and mechanical durability of pellets.

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