Abstract

The method for the regeneration of used fire-resistant oils based on treating oils with an anhydrous neutralizing agent at heating, followed by rectification has been developed. As a result of such treatment, used triaryl phosphate oils are purified from a complex of aging products (acids, phenols, sealing products, wear metals, introduced sludge, water). The method provides high yieldsof regenerated oils with quality that meets the regulatory requirements for fire-resistant triaryl phosphate oils for reuse.

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