EXPERIMENTAL STUDY ON THE WEIGHT LOSS DYNAMIC OF LONG FLAME COAL PYROLYSIS

Long flame coal from the Shenfu-Dongsheng coal field in the Ordos Basin is pyrolyzed for weight loss experiments using HYLZ-2 cryogenic dry distillation furnace. The pyrolysis procedure is designed to contain the dry dewatering phase (20 to 245 ℃), the transition phase of slight pyrolysis (245 to 460℃ or other 485℃, and 510℃) both at 5℃/min constant heating rate, and the strong isothermal pyrolysis phase at those three temperatures to the end point. For the isothermal pyrolysis, the activation energy E =162 KJ/mol, and the pre-exponential factor ln A=20.333.For the constant heating rate pyrolysis, the activation energy E =27.86 KJ/mol, and the pre-exponential factor lnA=5.649.