Pyrolysis of Waste Tire and Its Model

A TG/DTG experiment was conducted to study the pyrolysis process of waste tire powder. The results showed that the first stage of weight loss during tire pyrolysis corresponded to the thermal decomposition of the mixture of oils, moisture, plastifiers and other additives. The second stage was due to the decomposition of the natural rubber and the polybutadene (BR) and polybutadene-styrene (SBR). A simple model for the mass loss rate of tire pyrolysis was developed based on TG data and the parameters including the activation energy and frequency factor were calculated. The function of weight loss rate was determined by an integral method for the low and high temperature stages. The model results and experimental data agreed well.