Patent ID: 8299001
Filing Date: 2012-10-30
Classification: C10M

Abstract:
1. A process for recovering used lubricating oil, comprising the steps of: a) selecting used lubricating oil; b) pre-filtering the used lubricating oil; c) pre-treating the used lubricating oil with a flash type distillation, to take out substantially all water from the original used lubricating oil; d) placing used lubricating oil and clay in an open container where they are put together in contact to form a mixture, at normal atmospheric pressure; e) heating the mixture to a temperature of from 105 degrees Celsius to 200 degrees Celsius; and f) removing and separating the lubricating oil from waste products containing the clay and contaminants of the used lubricating oil, using a filter press system to separate the lubricating oil from the clay and contaminants, to form a clay cake that is discarded, obtaining oil essentially free from contaminants, without bringing substances other than clay in contact with the used lubricating oil.