Effect of temperature and feed rate on pyrolysis oil produced via helical screw fluidized bed reactor

다국어 초록 (Multilingual Abstract)

A series of experiments was conducted to study the effect of temperature and feed rate on physicochemical properties and yield of bio-oil. The experiments were performed in a helical screw fluidized bed reactor and about 150-gram palm shell (PS) was pyrolyzed in each run at 275 oC/min heating rate. The first set of experiments was conducted at temperature ranging from 400 to 650 oC without using any inert gas for fluidization. While the second set of experiments were performed at feed rates ranging from 3 to 25 g/min in order to investigate the effects of feed rate on pyrolytic products. Results showed that the bio-oil yield was increased with the increase in temperature and feed rate due to the enhanced biomass volatilization. In a similar vein to this, a greater extent in oxygenates cracking was also noted in the bio-oil. A maximum liquid yield of about 72.84 wt% was obtained at 500 oC, while 72.92 wt% liquid yield was obtained with 25 g/min feed rate. The HHV of bio-oil was also increased from 38.52 to 43.13 MJ/kg when pyrolysis temperature was increased from 400 to 650 oC.

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