Pyrolysis kinetics of blends of Gediz lignite with Denizli peat

Gediz lignite, Denizli peat, and several lignite-peat blends were pyrolyzed in a thermobalance apparatus at atmospheric pressure. Experiments were con ducted at nonisothermal conditions in the pyrolysis temperature interval of 293-1173 K under an argon atmosphere with a hearing rare of 30 K/min. A de crease in both relative volatile matter yields and total conversion percent age of the sample with the increase in the blending ratio of lignite to pea t was determined. TG and DTG data were analyzed by a first-order reaction r ate model. Apparent activation energies of the lignite and peat were calcul ated as 17.52 kJ/mol and 52.09 kJ/mol, respectively. Effects of blending ra tio of lignite to peat on kinetic parameters were investigated and the resu lts was discussed.