MINERAL OIL PURIFICATION METHOD Russian patent published in 2005 - IPC

Abstract RU 2245901 C1

FIELD: lubricants.

SUBSTANCE: invention relates to purification of light- and middle-group mineral oils exhausted during operation of vehicles. After preliminary magnetic separation-mediated removal of suspended solids, centrifugation, and filtration, oil is additionally stirred at 15 to 80^оС with aqueous solution of reagent at reagent-to-water ratio 1:1 and then settled until full clarification. Reagent contains 60-95% orthophosphoric acid, 4.7-39.7% isopropyl alcohol, and 0.3-10% methyl ethyl ketone.

EFFECT: increased degree of purification.

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RU 2 245 901 C1

Authors

Vlaskin A.T.

Pikalov I.I.

Dates

2005-02-10—Published

2003-12-03—Filed