Refining crude oil for industrial use relies on separation processes like centrifuging and distillation to remove impurities and separate small and large hydrocarbons for use in different applications. In order to turn used oil into desirable products, plants can use similar approaches to those applied to crude oil to remove unwanted particles and sort degraded hydrocarbons from usable ones.
There are two broad approaches to motor oil recycling: re-refining and chemical recycling. Re-refining aims to extend the fluid’s utility for another generation and avoid releasing it as a pollutant into the environment, while chemical recycling starts with breaking down the hydrocarbons that gave the former oil its unique properties in order to create feedstock for a wide variety of new products. Both approaches start with removing contaminants like dirt and metal particles from the fluid.
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