Process for re-refining spent lubeoils.

摘要

Process for re-refining spent lubeoils, wherein a lubeoil freed from water and sludge forming impurities is subjected to a pre-destillation at reduced pressure and with a short residence time of the oil in the distillation column (2) and is subsequently subjected to film evaporation under vacuum, in one or more wiped-film evaporators (15) wherein the overhead product obtained with the film evaporator is subjected to an aftertreatment after condensation and the heavy bottom product (residue product) of at least one film evaporator is at least partially recycled to the entrance of said film evaporator.