Effect of heating rate and particle size on pyrolysis kinetics of gediz lignite

摘要

Gediz lignite was pyrolyzed in a thermobalance apparatus at atmospheric pressure in this study. Effects of heating rate and particle size on the pyrolysis kinetics were examined. Experiments were conducted at nonisothermal conditions with a heating rate range of 10 to 90 K/min under an argon atmosphere in the pyrolysis temperature interval of 298 to 1173 K. Two different particle size ranges were tested: 595> D_p>297 and 53>D_p>44μm. Average relative volatile matter yields were Calculated at 40.6 and 39.0/100 of the total volatile matter yields from 678 to 777 K for The linear segments of the thermogravimetric(TG)curves of the larger and smaller Size particles, respectively.