| 초록 |
Fast pyrolysis is a thermal conversion process at a temperature range of 400 ~ 600 ℃, in the absence of oxygen, and at short vapor residence time (＜5 sec). Tulip tree pyrolyzed in a bubbling fluidized bed reactor for the production of bio-oil. Total liquid yield of tulip tree was 34.65 ~ 42.20 wt% between 450 ℃ to 550 ℃, and those of gas yield was 31.93 ~ 40.88 wt% with increasing reaction temperature. The higher heating values (HHV) of bio-oil were 23.89 MJ/kg at (500℃, 3.0 Umf). The bio-oil has high selectivity for furfural, phenol and their derivatives such as 2,6-dimethoxy-phenol, 2-methoxy-4-(1-propenyl)-phenol, 2,6-dimethoxy-4(2-propenyl)-phenol. The gas compositions were similar for all reaction conditions such as CO, CO2, H2, and C1~C4 hydrocarbons, and CO2 selectivity was highest 34.32~49.79 mol%. The 13C NMR results showed that shorter aliphatic carbon and the derivatives of phenolic, methoxy groups were generated during pyrolysis at higher temperature due to secondary decomposition reactions. |
