Apparatus for cleaning contaminated oil

Apparatus for cleaning oil, said apparatus comprising:

• a heating unit for heating oil,
• a centrifugal cleaner connected to said heating unit for receiving heated oil from said heating unit, said centrifugal cleaner having a rotor mounted for rotation about a rotation axis, a housing enclosing the rotor, a cleaner inlet for receiving oil from said heating unit, and at least one rotor nozzle on said rotor, said rotor nozzle upon exit of oil therefrom causing rotation of said rotor about said rotation axis, and a rotatable impeller positioned below the rotor to exert pressure on the oil in said cleaner,
• a vacuum dehydration unit connected to said centrifugal cleaner for receiving oil from said centrifugal cleaner,
• an oil holding tank,
• an inlet for oil to be cleaned,
• a first control valve selectively actuable to connect said heating unit to one of said inlet or said holding tank whereby oil to be cleaned can be supplied from said inlet to said heating unit or from said holding unit to said heating unit,
• an outlet for cleaned oil,
• a second control valve selectively actuable to connect said dehydration unit to one of said outlet or said holding tank to supply oil to said outlet or said holding tank respectively, and
• one or more pumps for conveying oil from said inlet or holding tank through said heating unit, said centrifugal cleaner and said dehydration unit to said outlet or back to said holding tank.

Apparatus for cleaning contaminated oil, said apparatus comprising:

• an inlet connectable to a source of oil to be cleaned,
• a holding tank for oil,
• a heater for heating said oil,
• a first pump for pumping oil through said heater,
• a centrifugal cleaner having a rotor mounted for rotation about a rotation axis, a housing enclosing the rotor, and a cleaner inlet for receiving oil from said heater,
• an impeller attached to said rotor for rotation therewith to exert, when rotated with said rotor, pressure on oil in the cleaner,
• a vacuum dehydration unit connected to said centrifugal cleaner for receiving oil from said centrifugal cleaner, said dehydration unit comprising a vacuum chamber, and means for connecting said vacuum chamber to a vacuum source for removal of moisture from said vacuum chamber,
• a second pump connected to said vacuum chamber,
• an oil outlet,
• a selectively actuable outlet valve connected to said second pump and connectable to said holding tank or said oil outlet for pumping of oil to said oil outlet or said holding tank respectively, and
• a selectively actuable inlet valve connected to said first pump and connectable to said holding tank or said inlet for pumping oil to be cleaned from said holding tank or said inlet respectively.