Effect of process conditions on product yield and composition of fast pyrolysis of Eucalyptus grandis in fluidized bed reactor

The fast pyrolysis of eucalyptus wood was conducted in a continuous-feed fluidized bed reactor. The effect of pyrolysis temperature, nitrogen flow rate, biomass feed rate and biomass feed size was investigated. The results showed that with increasing nitrogen flow rate, the bio-oil yield firstly increased from 51.9% to 61.1% and then decreased to 59.9%. The maximum percentage of syringol and guaiacol were 16.27 and 8.98 at temperature of 450 and 600 °C, respectively. The maximum bio-oil yield was 71.1%. The maximum percentage of CO was 44.1 at a flow rate 11.1 L/min, feed size 1.5 and feeding rate 1.7 g/min.