| 초록 |
In the face of modern energy issues, producing liquid fuels and chemicals from woody biomass is one of many feasible solutions. In particular, using supercritical organic solvents in thermochemical liquefaction of biomass has great potentials compared to using supercritical water due to mild operating conditions and high-combustion values of the liquid products. In addition, it has been reported that liquid products from biomass feedstock could be directly combined with petrochemical streamlines in residual blending processes without separation. In this study, direct liquefaction of empty fruit bunch (EFB) was carried out using sub- and supercritical tetralin, n-dodecane and their mixture. Tetralin was used as a hydrogen-donor solvent and n-dodecane was used as model solvent for petrochemical industries. The total feedstock conversion at 400 °C in tetralin and n-dodecane reached 97.1% and 77.4%, respectively, under the addition of Fe3O4 and H2. The conversion increased slightly at 450 °C, but the reaction pressure increased significantly. The variations of conversion and liquid yield in the n-dodecane/tetralin mixture were correlated with the proportion of tetralin. |
