Experiment Study on Oxygen Concentration Affected to Oxygen Consumption Rate of Loose Coal

The paper had a design on the programmed temperature rising experiment of the loose coal under the different oxygen supply conditions.A gas chromatograph chromatography was applied to the analysis on the oxygen concentration of the outlet air under the rated temperature during the temperature rising process.The oxygen consumption rate of the coal sample with different oxygen concentration and under the rated temperature was calculated,a comparison was conducted on the oxygen consumption rates of the coal samples at each temperature point and under the different oxygen concentration condition and a fitting was conducted on the oxygen consumption rate and oxtgen concentration under the certain temperature.The results showed that under the different oxygen concentration condition,the oxygen consumption rate of the loose coal would be increased with the temperature increased.The oxygen concentration would affect the oxygen consumption rate and would have no obvious influence to the oxygen consumption rate with the temperature varied.Under the same temperature,the oxygen consumption rate of the coal sample would be increased with the oxygen concentration increased and the oxygen consumption rate and the logarithmic relationship between the oxygen supplied concentration could be met.