Production of liquid fuels through pyrolysis of waste hydraulic oil

Abstract: Waste lubricants derived from crude oil have the potential to be converted into usable products through re-refining and regeneration. Pyrolysis is considered as one of the best treatment route as it does not produce any harmful by-products. The objective of this work was to recover liquid oils via pyrolysis. The oils could then be utilized as fuels or chemical feedstock. Slow and flash pyrolysis studies were carried out. The highest oil recovery of 65% was achieved at 500oC while a wider product range was produced at 600oC through flash pyrolysis. The product range included heavy, medium and light oils at compositions of 15.5%, 72.6% and 11.9% respectively