Assessment of ash melting temperature of birch and grass biomass pellet mixtures
2017
Platace, R., Latvia Univ. of Agriculture, Jelgava (Latvia) | Adamovics, A., Latvia Univ. of Agriculture, Jelgava (Latvia) | Ivanovs, S., Latvia Univ. of Agriculture, Jelgava (Latvia) | Gulbe, I., Latvia Univ. of Agriculture, Jelgava (Latvia)
Birch is a sturdy tree and often the first to be found in untouched, uncultivated lands. Dry birch wood gives off 25 % more heat than aspen and 15 % more heat than pine wood. Pellet fuel is an improved alternative fuel made of compressed hardwood (birch) and perennial grass biomass. The aim of the study: to evaluate the ash melting temperature of birch and grass mixture pellets for production of fuel. The pellets produced of birch and tall fescue, festulolium and timothy biomass in various mixture proportions were used in the present research. The lowest ash melting temperature at all four ash melting phases was identified in the pellets made of birch in proportion 1/3 with tall fescue, festulolium and timothy biomass, but the pellets made of birch in proportion 3/1 with tall fescue, festulolium and timothy biomass had the highest ash melting temperature. Therefore, the most appropriate recommended proportion for pellets is 3/1 (3 birch + 1 perennial grass biomass). Ash melting temperature of birch biomass at all four melting phases ranged from 1460 to 1500 ºC, while grass biomass reached 1020-1200 ºC.
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