KINETIC INVESTIGATION OF WOOD FUEL, COALS AND HYROLYZED LIGNIN
The article presents results of kinetic investigation of wood biofuel, coals and hydrolytic lignin. The research was carried out for different heating rates (5, 10 and 20 °C) under an inert (argon) and oxidizing mediums. Kinetic characteristics namely activation energy and pre-exponential factor were determined on the basis of Friedman and Ozawa-Flynn-Wall, and also by means of the EIPR model (Extended Independent Parallel Reaction). Satisfactory convergence of results that points the applicability of both methods is received. Further research of wood, hydrolyzed lignin and coals from various fields was carried out by means of the EIPR model. Values of the energy activation for wood biofuel are in the range from 62 to 93 kJ/mol that is significantly lower than for coals (104–116 kJ/mol).