UNIVERSAL PLANT FOR REGENERATING USED OIL Russian patent published in 1995 - IPC

FIELD: working-up used lubricants. SUBSTANCE: plant comprises pump, fine and coarse filters, heater, and working-up unit interposed between the heater and fine filter and made as several sections. The sections of the working-up unit are interconnected through pipe lines provided with valving members. In addition, the plant has cooler, positioned upstream of the fine filter and circuit for cyclic regeneration having tank and additional pump. The working-up unit includes centrifuge and separator. The coarse filter is self-cleaning. The inlet of the circuit for cyclic regeneration is connected to the pipe line interconnecting the working-up unit and cooler. The outlet of the circuit is connected with the pipe line interconnecting the corse filter and heater. EFFECT: enhanced efficiency. 7 cl, 1 dwg