Pyrolysis of quercus variabilis in a bubbling fluidized bed reactor

초록

Biomass has been concerned as one of the alternative energy resources because it is renewable, abundant worldwide, eco-friendly, and carbon neutral. Quercus variabilis has been studied to understand pyrolysis reaction characteristics, and to evaluate the efficiency of bio-energy production from fast pyrolysis. Quercus variabilis were fast pyrolyzed in a bubbling fluidized bed reactor at various reaction conditions. The effects of pyrolysis temperature between 400°C and 550°C on product yields were investigated. The yield of bio-oil was changed between 36.98 wt% and 39.14 wt%, and those of gas yield was 33.40 and 36.96 wt% with increasing reaction temperature. The higher heating value (HHV) of bio-oil at 500°C (3.0×U<inf>mf</inf>) was 20.18 MJ/kg. The gas compositions were similar for all reaction conditions such as CO, CO<inf>2</inf> and CH<inf>4</inf>, and CO<inf>2</inf> selectivity was the highest (37.16∼50.94 mol%). The bio-oil has high selectivities for furfural, phenol and their derivatives such as 1-hydroxy-2-propanone, 2-methoxy-phenol, 1,2-benzendiol, 2,6-dimethoxy-phenol.

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