Bio-based refinery intermediate production via hydrodeoxygenation of fast pyrolysis bio-oil

Pyrolysis bio-oil is unsuitable as transportation fuel due to its chemical composition and high oxygen (>30 wt%) water (>20 content rendering the upgrading essential prior any downstream use. The current work investigates of a flash pyrolysis via mild hydrotreatment (HDT), targeting potential intermediate refinery feed. Various operating parameters HDT were tested, including three temperatures (573, 603 633 K), two pressures (4 7 MPa) H2/bio-oil ratios (506 843 NL/L). According results, during bio-oil, massive plugging by coke formed in reactor. unsaturated oxygenates are regarded predominant precursors since they can interact with catalytic surface. From all examined conditions, it was found that longest catalyst life, (5 days on stream), achieved at MPa pressure, NL/L ratio K temperature. Furthermore, several properties initial improved, such viscosity (156 ? 4.9 cSt), carboxylic acids (78 0.2 mgKOH/g), density (1.024 0.9162 g/ml), (37 4 wt%). Conclusively, constitutes promising technological pathway for towards reliable