Hydroprocessing Bio-Oil and Products Separation for Coke Production

Fast pyrolysis of biomass can be used to produce a raw bio-oil product, which can be upgraded by catalytic hydroprocessing to hydrocarbon liquid products. In this study, the upgraded products were distilled to recover light naphtha and oils and to produce a distillation residue with useful properties for coker processing and production of a renewable low-sulfur electrode carbon. For this hydroprocessing work, phase separation of the bio-oil was applied as a preparatory step to concentrate the heavier, more phenolic components, thus, generating a more amenable feedstock for residue production. Low residual oxygen content products were produced by continuous-flow catalytic hydroprocessing of the phase separated bio-oil.