Supercritical water treats hydrocracked unconverted oil to remove heavy polynuclear aromatics, cutting coke precursors and extending catalyst life.
Depentanizing pygas before hydrotreatment preserves isoprene, piperylene, and cyclopentadiene while cutting hydrogen use and coke formation.
Separating feed into paraffin-rich and paraffin-poor streams enables hydro-processing that raises lube oil viscosity index while lowering cost.
Filtration, aromatic blending, and hydrotreating stabilize hydrocracker resid, cut sulfur and sediment, and help meet IMO 2020 fuel oil specs.
Independent reaction trains and tuned hydrotreating conditions turn waste oils into on-spec Group III/III+ base oils without sacrificing yield.
Tailored demetallization, hydrotreatment, and hydrofinishing raise used oil yield while matching Group II/III blending viscosity and stability.
Co-processing vacuum gas oil with pre-treated used oil raises lubricant-range yield and delivers Group II/III base stocks fit for blending.
A two-stage slurry reactor route raises BTEX yield from pyrolysis oil by converting multi-ring aromatics under milder catalytic conditions.