Study on Spontaneous Combustion Mechanism of Oil Containing Sulfur Based on Thermal Analysis

By making use of Q600 Simultaneous TG—DSC.thermal analysis experiments of 5 FeS samples with different diameters are completed.Spontaneous combustion mechanism of the oil containing sulfur is researched based on the experimental results of TG and DSC.Experimental results show that FeS sample is not sensitive to the change of temperature.In generally, oxidative temperature of FeS sample is more than 250℃and oxidative rate is slow.Sample diameter plays an important role in oxidative tendency of FeS sample.With the increase of sample diameter, the oxidative temperature of FeS sample increases and the range of oxidative temperature expands.Heating rate also influences on oxidative tendency of FeS sample and the oxidative tendency is more obvious in case of slow heating rate.