The influence of temperature on BTEXs release in used mineral oil incineration disposal process

The incineration of used mineral oil under the condition of air atmosphere was simulated under the laboratory scale, and the relationship between the release intensity of BTEXs in flue gas and the incineration temperature studied. The experimental condition was as follows: incineration temperature at 300, 500, 700, 900 and 1 100 ℃, air atmosphere, the quantity of used mineral oil about 1.00 g. The results showed that in the increasing process of incineration temperature from 300 to 1 100 ℃, the total BTEXs release showed a trend of decrease. The reduction effect of BTEXs except benzene increased significantly when the incineration temperature was over 700 ℃, and when the incineration temperature was at 1 100 ℃, the residue rate was 0 to 7.6%. The benzene release showed an increased trend under the incineration temperature of 300 to 700 ℃, and at 700 ℃, the amount of benzene in the incineration flue gas was about 14 times of the sample's background content. From 900 to 1 100 ℃, the reduction effect of the benzene in the flue gas was not obvious by increasing the incineration temperature.