Abstract:

Abstract: CO, as the index gas in the process of coal spontaneous combustion, plays an important role in forecasting the state of coal spontaneous combustion. In this paper, using the real-time monitoring device, mined-out area of coal oxidation at low temperature oxidation was simulated. The influence of particle size and initial oxygen concentration of CO release, found Gob release CO oxidation time increases performance significantly phased out and use the data fitting method to identify a function of CO production rate versus time style. At the same time, by comparison of the experimental studies have confirmed, CO release rate mainly due to the impact of inhibiting the oxidation reaction product of the reaction of oxygen in the coal besides the oxygen concentration and the surface active sites of the coal, such a mechanism may be better to explain the phenomenon of spontaneous combustion of coal.

Key words: Keywords: coal, low-temperature oxidation, the rate of CO release, prevention, Spontaneous combustion