Test of the Relationship between Activation Energy of Low-temperature Oxidation of Coal and Temperature

For studying change law of reaction activation energy in temperature rising process of coal low-temperature oxidation,it is determined by coal spontaneous combustion test that activation energy of low-temperature oxidation of tacking coal having defferent spontaneous combustion tendency.The results show that,the stronger spontaneous combustion tendency of coal is,the lower activation energy of oxidation reaction is,and activation energy of coal is increasing with increasing of temperature.In this process,at below 70℃,temperature increasing is gentle;and at above 70℃,activation energy increasing is rapidly as characteristic of oxidation reaction change.By determining activation energy of oxidation reaction at below 70℃,it can be judged accurately that spontaneous combustion tendency of coal.