2013 年 92 巻 10 号 p. 1014-1020
The effects of biomass type, size, and pyrolysis temperature on pyrolytic products distribution have been investigated. Hence, reaction temperatures (400, 450, 500, and 550 °C) and biomass feedstock sizes (0.15-0.5, 0.5-1.0, and 1.0-2.0 mm) were applied. Decomposition of palm kernel shell and mesocarp fiber was performed in a fluidized bed pyrolyzer with nitrogen gas flow rate of 25 L(NTP)/min. The maximum bio-oil yield (39.6 %) was gained from PKS of 0.15-0.5 mm at 500 °C. Many evidence showed that small particle size produced the most noticeable amount of bio-oil production. The fluidized bed pyrolysis reactor used possesses six successive condensers operated at three temperatures. Thus, six fractions of bio-oil samples were obtained from these six condensers. The properties of each bio-oil sample were determined including calorific value, elements, water and ash contents, and major compounds in the bio-oils. The compositions of water and major compounds in the fractional liquids of these six successive condensers were also reported.