Durability of compacted energy crop biomass
2014
Repsa, E., Latvia Univ. of Agriculture, Jelgava (Latvia) | Kronbergs, E., Latvia Univ. of Agriculture, Jelgava (Latvia) | Pudans, E., Latvia Univ. of Agriculture, Jelgava (Latvia)
The purpose of the work is to investigate mechanical durability of briquettes and pellets of energy crop biomass. Briquettes were produced from common reed (Phragmites Australis L.), reed canary grass (Phalaris arundinacea L.) and mixture of peat with common reeds and reed canary grass but pellets from reed canary grass and peat mixture. Briquettes and pellets mechanical durability test was realized according to the LVS EN 15210 standard. The durability is the measure of the resistance of compacted fuels to affection of shocks and abrasion as a consequence of handling and transportation processes. It is stated as percentage of remaining mass of biofuel after sieving. The requirement of standards (LVS EN 14961-1:2010) for mechanical durability of low quality briquettes is less than 90.0 % (minimum value to be stated) and high quality briquettes are greater than or equal to 95.0 %, but mechanical durability of low quality pellets is less than 95.0 % (minimum value to be stated) and high quality pellets are greater than or equal to 97.7 %. The results of the mechanical durability test show that mechanical durability of energy crop pellets changes from 82.4 to 97.6% and mechanical durability of energy crop briquettes changes from 87.5 to 95.5 %. Mechanical durability of pellets and briquettes depends on the peat proportion in mixture.
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