Elucidation of Mechanisms of Biomass Pyrolysis Behaviors

Abstract

The non-ferrous smelting industries have accelerated to expand the processing of recycled materials for carbon neutrality. However, Top Submerged Lance (TSL) furnace, which plays an important role for the metal recycling furnace, consumes large amounts of coal. In order to reduce the use of coal in the near future, biomass fuel as one of the candidates of alternative fuels is expected. In this study the pyrolysis behaviors, using a thermogravimetry, are elucidated for four biomass samples with different compositions of cellulose, hemicellulose and lignin. As a result, some pyrolysis behavior depended on the biomass compositions. To clarify the influence of biomass compositions, the pyrolysis behaviors for the simulated biomass samples, in which reagents of cellulose, hemicellulose and lignin are adjusted to the same proportions to those in the actual biomass samples, were compared with those for the actual biomass samples. Consequently, the pyrolysis behaviors for the simulated biomass showed similar behavior to those of the actual biomass samples fundamentally. However, the pyrolysis behavior of a unique actual biomass with lump char structure did not fit with that of the simulated biomass.