In the present study, lab-scale fast pyrolysis reactor (1kg/hr) using lignocellulosic waste biomass was numerically modeledwith various reaction mechanism and the calculation results were compared. Three kinds of reaction mechanisms were appliedsuch as three-step mechanism, two-stage, semi global mechanism and Broido-Shafizadeh mechanism to simulate chemicalreactions in the fast pyrolysis reactor. The fast pyrolysis reactor was modeled as function of mass fraction and reactiontemperature following each reaction mechanism. Especially, the reaction temperature is one of important factors to determinebio-oil yield. Hence, in this study, reaction rates and yield of fast pyrolysis products were compared with varying reactiontemperature for the three kinds of reaction mechanism. The variation of reaction rate for two-stage, semi global mechanismand Broido-Shafizadeh mechanism showed very similar pattern but, three-step mechanism has different trend because theeffect of secondary reaction was missing. The yield of tar was increased before reaching maximum tar yield at 430oC and520oC for two-stage, semi global mechanism and Broido-Shafizadeh mechanism, respectively then decreased as temperaturerises more. But, the yield of tar was increased continuously for three-step mechanism as temperature rises. The yield of non-condensable gas and char was increased as temperature rises for three kinds of reaction mechanisms.

• 이유리(연세대학교 환경공학부) | Yu Ri Lee
• 최항석(연세대학교 환경공학부) | Hang Seok Choi Corresponding author