An investigation on the interaction between biomass and coal during their co-pyrolysis

This study aims to investigate the interaction during the co-pyrolysis of Cangzhou coal and sawdust/rice husk. The synergistic is analyzed in the thermal behavior of the blends and the kinetics by thermogravimetric analysis (TG), also in the products yield (oil and char) from the fast copyrolysis and the oil characterization by GC-MS and UV fluorescence spectroscopy. Firstly TG experiment indicated the synergistic effect occurs during the co-pyrolysis process of the coal and rice husk occurs during the all the main pyrolysis (300-550oC) and that of the sawdust between 300-410oC (for the 50:50 and the 75:25 blends) and 300-550oC (for the 25:75 blend). Then the co-fast pyrolysis in a novel auger reactor increased the oil yield compared to the predicted values. The synergistic interaction promoted the oxygenated compounds, limited the SOx emissions, was less reactive and did not promote the aromatic components. © 2019 Trans Tech Publications Ltd, Switzerland.