The oil degradation, thermal cracking, and darkening issues common in conventional recycling systems are completely eliminated with our advanced Wiped Film Evaporator (WFE) technology. By operating under deep vacuum conditions (down to 1 mbar or lower), the boiling point of the waste oil is significantly reduced, allowing heavy hydrocarbon molecules to evaporate efficiently without being exposed to extreme temperatures.

Inside the highly corrosion-resistant 316L stainless steel main body, a precisely engineered rotor equipped with self-lubricating carbon-graphite wiper blades continuously spreads the feed oil. This dynamic mechanical action creates a highly turbulent, ultra-thin fluid film (typically 1-2 mm) against the heated inner wall. As a result, the oil molecules remain on the heating surface for only a few seconds. This exceptionally short residence time guarantees a superior heat transfer coefficient while completely preventing coking, fouling, or thermal stress on the product.

Once evaporated, the pure oil vapors instantly pass to the adjacent high-capacity condenser line. Meanwhile, the heavy, unevaporated residues (asphalt/bitumen) are continuously swept downward and safely discharged via specialized high-temperature extraction pumps without breaking the vacuum.

The Result: A fully continuous, automated distillation process that minimizes bottom residue and maximizes the recovery of crystal-clear, premium base oil approaching Group I / Group II standards, ensuring superior market value and high profitability for your plant.