Method for removing sludge from oil

Details Method for removing sludge from oil Method for removing sludge from oil

1976-12-30

1978-08-08

Levine, Herbert

Mineral oils: processes and products

Refining

Purifying used oil

208181, C10M 1100

Patent

active

041055420

ABSTRACT:
This invention relates to a method for purifying used oil such as lubricating oil and the like. The method comprises the steps of mixing the used oil with a diluent so as to lower the viscosity of the used oil to a manageable viscosity, and then mixing and heating the diluted oil with a water-alcohol mixture which mixture also includes a small quantity of water soluble acid or a monovalent base. The resultant mixture is then permitted to settle so as to cause a phase separation with the sludge and other undesirable components in the aqueous phase and the now-purified oil in the organic phase.

REFERENCES:
patent: 2294461 (1942-09-01), Jones
patent: 2339520 (1944-01-01), Riesmeyer
patent: 3819508 (1974-06-01), Fainman et al.
patent: 3835035 (1974-09-01), Fainman

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