Investigation of Combustion Kinetic with Coats-Redfern Method by Using Thermogravimetric Data of Different Lignite Samples
T. Agacayak
Konya Technical University, Konya, 42250 Turkey
Keywords: Activation energy, coal, combustion, combustion kinetics, thermogravimetric analysis (TGA), differential thermogravimetric analysis (DTGA)
Abstract
In this study, combustion properties such as thermogravimetric analysis and differential thermogravimetric analysis, combustion profile, ignition temperature and peak temperature were analyzed for 3 lignite samples obtained from different regions of Konya in Turkey. In the kinetic analysis, activation energies were calculated separately for four different reaction sequences using the Coats-Redfern method. As a result, when the calculated activation energies, thermal and kinetic properties of the coal samples are evaluated together, it is seen that Beyşehir coal is more prone to combustion than other coals.
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