METHOD OF USED INDUSTRIAL OILS REGENERATION AND PLANT FOR METHOD EMBODIMENT Russian patent published in 2002 - IPC

FIELD: technology of regeneration of used industrial oils, particularly, methods and plants for purification and regeneration of transformer, turbine, compressor and other industrial oils. SUBSTANCE: after coarse filter oil is supplied through the second degassing vessel in which vacuum is built-up, and vacuum is built-up and maintained also in the first vessel. In this case, oil is heated in both vessels and returned back to the first and second vessels through filter of intermediate purification by circulating pump. Vapors and gases formed in both vessels are directed to vapor condenser-separator and oil is simultaneously subjected to ultrasonic treatment in both vessels. Purified oil is accumulated and subjected to ultrafiltering in the first vessel. Then oil is supplied to adsorption filter. EFFECT: higher rate of purification and quality of product. 4 cl, 1 dwg, 3 tbl