Reprocessing of used,trade motor oils to make virgin-quality motor base stocks

摘要

Viscolube and Axens have jointly developed a process,known as Revival,which uses flash distillation,thermal deasphalting and deep hydrofinishing to remove metals and carry out denitrification,desulphurisation and saturation of anomalies in used motor oils.The result is a usable API Group II base oil.The process was commercialised last year in an 80 000 tonne/year recycling unit in Pieve Fissiraga,Italy.