The Fushun Oil Shale Semi-coke's Combustion Features and Thermal Dynamic Analysis

摘要

This study analyses the Fushun oil shale semi-coke samples prepared in 450°C, 550°C and 650°C by using STA449 TGA. The experiment studied their ignition points, concluded that with the ascent of the char-making-temperature the semi-coke's ignition point is getting higher. The test used Coats-Redfern way to study the semi-coke's activation energy. The result shows the semi-coke's thermal dynamic model needs two different reaction orders in different temperature. In low temperature the reaction order is n=1; in high temperature it is n=3. When the temperature is low (n=1), the activation energy doesn't influenced by the heating rate. In high temperature condition the activation energy is getting bigger with the ascent of the heating rate.