Thermal behavior and dynamics of biomass and waste tyre co-pyrolysis oil

Thermal behaviors of commercial diesel oil 0# and pyrolysis oil obtained from co-pyrolysis of biomass and waste tyre blend(with or without catalysts) were investigated by thermogravimetric analysis(TG-DTG).Through linear regression,the results illustrated that for pyrolysis oils the thermal kinetic follows the formula dα/dt=Ae-△vapH/RT(1-α)2and for diesel oil it follows the formula dα/dt=1.5Ae-△vapH/RT(1α)2/3[1-(1-α)1/3]-1.The evaporation heats calculated were 37.46 kJ·mol-1 for SBA-catalyzed pyrolysis oil,30.60 kJ·mol-1 for MCM-41-catalyzed pyrolysis oil,41.27 kJ·mol-1 for pyrolysis oil without using any catalyst, and 55.50 kJ·mol-1 for diesel oil 0#;these values were close to those reported in the literature.The existence of SBA-15 and MCM-41 as catalysts in the pyrolysis can reduce high fractions of the resultant pyrolysis oil;SBA-15 performed better than MCM-41 in reducing high fractions.