V. M. Medvedev,¹ V. L. Kiselev,¹ N. G. Kiseleva,¹ A. N. Zinnatullina<sup>1

1</sup>Kazan State Agrarian University (Russian Federation)

Abstract

Based on a comprehensive analysis of traditional regeneration methods such as gravity settling, centrifugation, alkaline purification and vacuum treatment, a new, improved plant for the regeneration of used engine oils was developed and modeled. Its fundamental difference lies not in the rejection of proven physico-chemical principles, but in their rational integration and optimization of the sequence. The developed experimental setup implements this technique by combining the processes of thermal vacuum settling, ejection mixing with reagents, multi-stage separation and final filtration in a single automated cycle. This approach makes it possible to selectively remove all types of contaminants - mechanical impurities, water, oxidation products and acidic components - and obtain a regenerate at the output, the physico-chemical properties of which comply with the standards for fresh oils. Thus, the installation ensures the return of high-quality lubricant to the enterprise, the opportunity to reuse high-quality lubricating oil recovered from its own waste in its equipment. This makes it possible to organize cyclic resource conservation, in which the regenerated oil is re-supplied to the machine and tractor fleet, reducing the need to purchase new ones.