PROCESS FOR THE REGENERATION OF EXHAUST OILS

A process for the regeneration of exhaust oils is disclosed, comprising a fractional distillation step and a hydro-refining step. In the hydro-refining step, hydrogen is fed from reforming of biogas. The recycled hydrogen following the hydro-refining undergoes desiloxanation before being returned into the hydro-refining reactor. Also a plant for the regeneration of exhaust oils is disclosed, comprising a column (5) for fractional distillation and a hydro-refining reactor (10) of the fractions leaving said fractional distillation column (5), wherein the outgoing product is separated (14) into product (15) and recycle (16), the latter (16) consisting mainly of unreacted hydrogen, characterised in that said recycle (16) is sent back to the hydro-refining reactor (10) after having run through a desiloxanation unit (17) and in that the hydrogen fed during the hydro-refining step comes from the reforming of biogas.