Renewable diesel production from catalytic pyrolysis feedstock

A process for preparing renewable diesel fuel, comprising:

• a) feeding biomass, catalyst composition, and transport fluid to a catalytic pyrolysis process fluidized bed reactor maintained at reaction conditions to manufacture a raw fluid product stream,
• b) feeding the raw fluid product stream of a) to a solids separation and stripping system to produce separated solids and a fluid product stream,
• c) feeding the fluid product stream of b) to a fractionation system in order to recover a first fraction boiling at or above 180° C. to 350° C.,
• d) mixing the first fraction of c) with at least one distillate cut having lower aromatic content than the first fraction in order to dilute the aromatic content of a resultant mixture below 60 wt. %, wherein the at least one distillate cut has a boiling point range compatible with diesel fuel, Wherein the distillate cut having lower aromatic content than the first fraction proportion in the blend of step d) is preferably above 40 wt %, preferably above 50%, above 70 wt % and between 80 to 100 wt %.
• e) hydrogenating at least a portion of a blend generated in d) with hydrogen at hydrogenation conditions to produce a hydrogenated fraction,
• f) optionally recovering diesel fuel comprising naphthenes from the hydrogenated fraction of e).