present study, torrefaction of corncobs was
conducted in an auger reactor at 250, 275 and 300 C and residence
time of 10, 20 and 60 min. The torrefied corncobs were fast pyrolyzed
in a bubbling fluidized bed reactor at 470 C to obtain biooil.
Solid 13C NMR and FTIR were used to characterize the structural
changes of the torrefied corncobs. The compositional analysis of
the bio-oil was performed with GC–MS. The effects of torrefaction
temperature and residence time on the change in fast pyrolysis
behavior of torrefied corncobs are described and discussed and a
mechanism is proposed.