EXPERIMENTAL COMPARISON OF THE WEIGHT LOSS DYNAMIC DURING PYROLYSIS BETWEEN LONG FLAME COAL AND OIL RICH COAL

For the isothermal pyrolysis of oil rich coal, the activation energy E =235.92 KJ/mol, and the pre-exponential factor lnA=32.324. The activation energy of oil rich coal under isothermal pyrolysis condition is larger than that of long flame coal, E =162.15 KJ/mol, which means that the conversion rate of long flame coal is larger than that of the oil rich coal. For the constant heating rate pyrolysis of oil rich coal, the activation energy E =39.81 KJ/mol, and the pre-exponential factor lnA=5.239. The activation energy of oil rich coal under constant heating rate pyrolysis condition is larger than that of long flame coal, E =27.86 KJ/mol, which means that the conversion rate of oil rich coal is larger than that of the long flame coal.