The Technology of Integrated Cleaning of Fire-Resistant Oilsстатья
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Дата последнего поиска статьи во внешних источниках: 20 октября 2021 г.
Аннотация:Fire-resistant turbine oils on the basis of triaryl phosphate are subjected to hydrolysis with the formationof acids and phenols during operation at power stations in control and lubrication systems of power units.This increases acid number (AN) and leads to the formation of gum deposits on equipment. The process ofdecreasing AN in waste Reolube OMTI fire-resistant liquids with AN above 1.5 mg KOH/g, using the hydroxylflor of AV-17-8chS anion resin, was investigated in this work. It has been demonstrated that, on keeping a fireresistantliquid at a temperature of 70°С for 2 h, its AN can be reduced from 2.67 to 0.03 mg KOH/g. Decreasingthe temperature below 60°С drastically reduces the acid neutralization rate. The rate of acid neutralization alsodrops sharply on a decrease in AN of a fire-resistant liquid and exhaustion of the exchange capacity of the anionresin. This makes unprofitable the neutralization of acids in oils with AN below 0.05 mg KOH/g using ionexchangeresin. The exchange capacity of anion resin also cannot be completely exhausted. Vacuum drying ofneutralized oil at 70°С and a residual pressure of 0.01 MPa yields oil with a water content below 0.03%