Re-refining Of Lubricating Oil

Process of Manufacture: Used lubricating oil obtained in 200 liter capacity drum contains water and moisture. These are transferred by pump into a shallow dehydration vessel. The vessel is heated to remove water and moisture from oil. The moisture free oil is transferred to Lead Lined Acid treatment plant. Here ileum is sprayed on oil so that contaminants form sludge and sink below the oil. Oil is drained from the Tap in the side of the plant while sludge is removed from the opening at the bottom of the plant. The sludge is treated with lime and placed inside molds to form fuel bricks. The oil is mixed with Fullers earth and heated under vacuum. It is then allowed to settle for about four hours. The oil is then filtered in a Filter Press to separate activated clay from oil. The refined oil is prone to oxidation and discoloration and hence mixed with Antioxidant.