Determination of Index Gas in Coal Oxidation Process

Using electric heating furnace to carry out oxidation temperature test of coal sample,and taking gas chromatograph to measure gas concentrations of coal sample which released at different temperatures,the paper analyzes and studies coal sample temperature,oxygen concentration and the relationship among different gas concentrations,and determines the index gases of various oxidation stages of this coal seam,which has the important guiding significance to prediction and prevention of spontaneous combustion.