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http://dx.doi.org/10.5658/WOOD.2012.40.3.204

Investigation of Physicochemical Properties of Bio-oils Produced from Pitch Pine (Pinus rigida) at Various Temperatures  

Kim, Tae-Seung (Dept. Forest Sciences, CALS, Seoul National University)
Kim, Jae-Young (Dept. Forest Sciences, CALS, Seoul National University)
Oh, Shin-Young (Dept. Forest Sciences, CALS, Seoul National University)
Hwang, Hye-Won (Dept. Forest Sciences, CALS, Seoul National University)
Choi, Joon-Weon (Dept. Forest Sciences, CALS, Seoul National University)
Publication Information
Journal of the Korean Wood Science and Technology / v.40, no.3, 2012 , pp. 204-211 More about this Journal
Abstract
In this study, fast pyrolysis of pitch pine (Pinus rigida) was performed in a fluidized bed reactor under the temperature ranges between 400 and $550^{\circ}C$ at the residence time of 1.9 sec. Essential pyrolytic products (bio-oil, biochar, and gas) were produced and their yield was clearly influenced by temperature. The maximum yield of bio-oil was observed to 64.9 wt% (wet basis) at the temperature of $500^{\circ}C$. As pyrolysis temperature increased, the yield of biochar decreased from 36.8 to 11.1 wt%, while gas amount continuously increased from 16.1 to 33.0 wt%. Water content as well as heating value of bio-oils were obviously sensitive to the pyrolysis temperature. The water contents in the bio-oil clearly decreased from 26.1 ($400^{\circ}C$) to 11.9 wt% ($550^{\circ}C$), with increasing the fast pyrolysis temperature, while their higher heating values were increased from 16.6 MJ/kg to 19.3 MJ/kg. According to GC/MS analysis, 22 degradation compounds were identified from the bio-oils and 10 compounds were derived from carbohydrate, 12 compounds were derived from lignin.
Keywords
pinus rigida; fast pyrolysis; bio-oil; higher heating value; water content; biorefinery;
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