The impact of dry torrefaction on the fast pyrolysis behavior of ash wood and commercial Dutch mixed wood in a pyroprobe

In this study torrefied feedstocks, consisting of mixed wood and wood residues torrefied at 300 degrees C and ash wood torrefied at 250 and 265 degrees C, were pyrolyzed in a pyroprobe at five pyrolysis temperatures (600-1000 degrees C) and a fast heating rate (600 degrees C.s(-1)) to investigate the effect of torrefaction on the formation of volatiles and their evolution in a 100 kW circulating fluidized bed gasifier. Results showed that torrefaction converted mostly the hemicellulose content of feedstocks. Furthermore, torrefaction resulted in decreasing the bio-oil and gas yields, increasin... Mehr ...