Method of rerefining oil by distillation and extraction

Details Method of rerefining oil by distillation and extraction Method of rerefining oil by distillation and extraction

1975-08-27

1977-05-03

Gantz, Delbert E.

Mineral oils: processes and products

Refining

Purifying used oil

208181, 208184, C10M 1100

Patent

active

040213331

ABSTRACT:
Used oil is rerefined by distilling it to remove a volatile forecut followed by a fraction of lubricating viscosity; the latter is then extracted with an immiscible liquid extractant to remove impurities. As optional preliminary steps, the oil may be diluted with a volatile diluent and insoluble impurities removed therefrom, and heated with an aqueous solution of a strongly alkaline material to concentrate metallic constituents (such as metal-containing additives) in a solid sludge.

REFERENCES:
patent: 3173859 (1965-03-01), Chambers
patent: 3625881 (1971-12-01), Chambers et al.
patent: 3919076 (1975-11-01), Cutler et al.

Affiliated with

Also associated with

Rating

Method of rerefining oil by distillation and extraction does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of rerefining oil by distillation and extraction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of rerefining oil by distillation and extraction will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-343985