Neutralizing oxidation product components in continuous rerefini

Details Neutralizing oxidation product components in continuous rerefini Neutralizing oxidation product components in continuous rerefini

1988-01-29

1989-05-30

Garvin, Patrick P.

Mineral oils: processes and products

Refining

Purifying used oil

208178, 208179, 208203, 208283, 208286, 208357, 208366, C10G 1700, C10G 1900, C10G 2706, C10M17500

Patent

active

048348686

ABSTRACT:
Rerefined used oil supplies are treated on a continuous basis so as to clarify the flow and so as to neutralize oxidation product components such as carboxylic acids which remain within the oil stocks after they have been rerefined by upstream procedures. The process is carried out on a continuous basis, and the treatment includes utilizing very low quantities of strong base for each volume of rerefined used oil that is thus treated. The treatment process includes continuously vacuum distilling a continuous flow of used oil stock and strong base composition.

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