In contrast to blending biofuels with refined petroleum products (e.g., gasoline, diesel, jet fuel), co-processing incorporates ‘biocrude’ or renewable ‘synthetic crude’ at the refinery processing stage.

Feedstock & Technologies

Coprocessing is the simultaneous co-conversion of biogenic or non-fossil synthetic substances and petroleum crude oil (or refined fractions) in existing petroleum refineries for the production of renewable hydrocarbon fuels. Inclusion rates are between 5-20% non-fossil content. As with other RHF, co-processed fuels are full fungible.

Feedstocks are generally from two categories: fats and oils, or ‘biocrude’ produced by thermal liquefaction from cellulosic materials (also described as upgraded pyrolysis oils). Tall oil, a by-product of pulp and paper production, has been successfully co-processed.

Feedstocks are co-fed into either a Fluid catalytic cracking (FCC) unit or hydrocracking/hydrotreating units. Co-feeds into an FCC unit produce predominantly renewable gasoline; co-feeds into a hydrotreater unit produce predominantly renewable distillates (diesel and jet fuel).


Co-processed renewable diesel and gasoline are fully fungible hydrocarbon fuels that meet existing refined product CGSB standards for full compatibility with existing powertrains (light duty, heavy duty) and distribution infrastructure.