화학공학소재연구정보센터
Process Safety and Environmental Protection, Vol.104, 218-224, 2016
Thermal analysis of spontaneous combustion behavior of partially oxidized coal
Research on partially oxidized coal helps in the early detection of spontaneous combustion due to secondary oxidation of the coal remaining in mined-out areas. Three types of coal samples were used in this study. A self-designed temperature-programmable experimental system was developed to investigate the spontaneous combustion characteristics of partially oxidized coal. In addition, the differences between the oxidation characteristics of a fresh and a partially oxidized coal sample were studied. The CO concentration and its production rate, the oxygen consumption rate and the heat release rate were used as macro-characteristic parameters to show the oxidation characteristics. The results show that the characteristic parameters increased faster with temperature for partially oxidized coal compared to a fresh sample up to a temperature of 110-140 degrees C. Above this temperature the opposite is observed. (C) 2016 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.