Centrifuge
Centrifugal separation is an accelerated form of sedimentation where the force of gravity is replaced by centrifugal force 10000 times greater.
Separation takes place in a solid-wall bowl that can be arranged for either clarification or purification. In both cases the contaminated oil is fed into the bowl by a built in pump through the centre and it is separated by centrifugal force into its various phases, the heaviest phase (sludge & water) being deposited at the periphery of the bowl. The accumulation of sludge is removed from the bowl periodically by hand. In self cleaning centrifuge the bowl allowing the sludge to discharge through a number of slots at its perimeter.
Clarification: When the bowl is arranged to separate solid particles suspended in a fluid of lower density.
Purification: When the bowl is arranged to separate solids and two intermixed liquids, which are insoluble in each other and have different specific gravities.
Advantage of a Centrifuge:
This is a mechanical filtration device. No alkali or chemical required. So the properties of the oil remain unchanged.
It is a constant, continuous process with continuous feed and discharge of liquids.
Easy and inexpensive to install.
Simple operation and nominal maintenance.
Occupies a very little floor space.
Can be used as a mobile unit.
Centrifugal Separation is the fastest separation process.
Application of a Centrifuge:
Filtration of Automotive oil, Fuel oil, Transformer oil, HSD, Turbine oil, Hydraulic oil, Bio-diesel etc.
