Thermoanalytical investigation of selected fuel during isothermal heating
¹Slovak University of Agriculture in Nitra, Faculty of Engineering, Department of
Transport and Handling, Tr. A. Hlinku 2, SK949 76 Nitra, Slovakia
²Mendel University in Brno, Faculty of Agronomy, Department of Agricultural, Food and Environmental Engineering, Zemědělská 1, CZ61300 Brno, Czech Republic
³Constantine the Philosopher University in Nitra, Faculty of Natural Sciences,
Department of Physics, Tr. A. Hlinku 1, SK94974 Nitra, Slovakia
The thermal decomposition of woody biomass was studied using pellets made from residual processing spruce wood (Picea abies). The samples were studied using thermogravimetric analysis in the isothermal regime at the temperatures 275 °C, 300 °C, 325 °C, and 350 °C, which corresponds to the main decomposition region. The results show that the main decomposition region can be described as a volatilisation of the main constituents at a temperature higher than 300 °C. Otherwise, the results indicate, that the lignin does not decompose at lower temperatures. Therefore, it can be concluded that the heating rate is one of the most important parameters that affect the thermal decomposition of lignin and could lead to different interpretations if non-isothermal measurements are used.