11th China-Korea Clean Energy Workshop, Sept. 20-23, 2016, Nanjing, China
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TYPE: □ Oral □ Poster
Production of Bio-oil from larch sawdust in a bubbling fluidized bed reactor
Gildong Hong1, Daehan Kim2, Nara Jang1*
1Korea Institute of Energy Research, Daejeon 305-343, Korea
2Hanguk University, Seoul 123-456, Korea
*Corresponding author ()
Biomass resources include various natural and derived materials, such as woody and herbaceous species, wood wastes, agricultural and industrial residues and can be easily acquired in all parts of the country [1]. Fast pyrolysis experiments of larch sawdust (Table 1.) by using bubbling fluidized bed (0.076 m I.D. ×0.8 m high) have been investigated to determine particularly the effect of temperature, Uo/Umf ratio, Length/Diameter ratio of bed (L/D), particle size of the bed material and O2 concentration on the bio oil yield and compositions. As the bio oil yield decreased with operation conditions, the gas yield increased and the number of chemical compounds in bio oil decreased. The maximum oil yield of 58wt% was obtained at temperature: 400 oC, L/D ratio: 2.0, Uo/Umff: 4.0, bed particle size: 40 μm, feeding rate: 2.2 g/min and O2 concentration: 0 % (Figure 1).
Figure 1. Effect of temperature on the products yield.
Table 1. Proximate and ultimate analysis of larch sawdust
Proximate analysis (wt%) / Ultimate analysis (wt%)Larch / M / V. / A / FC / C / H / N / S / O
6.27 / 78.11 / 0.58 / 15.04 / 44.83 / 5.98 / 0.24 / 0.02 / 48.39
References
[1] X.K. Ku, T. Li, T. Lovas. Effects of Particle Shrinkage and Devolatilization Models on High-Temperature Biomass Pyrolysis and Gasification. Energy & Fuels, 2015, 29 (8): 5127-5135.
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