Abstract
Slow pyrolysis oil of wood (woody tar, WT) was partially hydrodeoxygenated using a continuous-flow slurry-bed reactor. The oxygen content of WT was reduced from 27% to around 10%. The hydrodeoxygenated oil (HWT) was separated into light, middle distillates and bottom (>360℃). The bottom and catalyst recycle and the addition of vanillin and glucose in the feedstock were also tested. The middle distillate (HWT-MD, 240〜360℃) was co-hydrotreated with petroleum LGO and VGO using a continuous-flow fixed bed reactor. The HDS reaction of LGO mixture was inhibited significantly, while that of VGO mixture was promoted by the addition of HWT-MD.
