Abstract
Abstract Mine fires are the major disasters in process of coal production, and the mine timbers that can lead to fires are still significant hazard sources. For timber fires, thermal decomposition provides the necessary fuels for combustion in gas phase. To investigate the thermal decomposition kinetics of the mine timber, a typical timber is taken as experimental sample in this paper. TG and DTG techniques are carried out at different heating rates. Physical, chemical and thermal effect changes are analyzed according to the pyrolysis process. As temperature increases, the timber pyrolysis process shows four phases with varied physicochemical properties and heat effect. Two-phase and first-order thermal kinetic models for the decomposition of mine timbers are advanced, and the kinetic parameters are obtained. Those researches are benefit to understanding the ignition mechanism and flame spreading of timber fires in coal mines.
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