318 Refining Used Lubricating Oils
The Lubriclear Process from the National Center for Environmental Research:
This involved carbon membrane separation of the base oils from the contaminants.
Demonstration units of 75 gallons (284 L) per day had been built in the United States
and Canada. Problems were expected to be the expense of the membranes and their
fouling.
The Miniraff Process from Minitec Engineering GmbH of Germany: The oil
is treated in a destructor unit whose function is unknown before separation and
hydrotreatment of the fuel products. The rst mobile unit of 500 kg (1103 lbs.) per
hour was under construction.
The Polymer Membrane–Based Filtration Process from the Environmental
Technologies Institute of Singapore: The oil passes t ...