Palm oil purifier


The palm oil Purifier is widely used for the purification of palm oil. The oil is fed from the oil tank to the purifier where impurities and water are removed. After purification the oil passes to the vacuum dryer, and is finally pumped to the main storage tank via an oil cooler.

The PASB purifier is a solids ejecting disc stack type centrifuge. The rotating bowl is driven by the electric motor via the flat belt or gear worm. With the feed closed, oil is displaced from the bowl by the addition of displacement water and discharge water is added to release the hydraulic closing force, lowering the sliding bowl bottom. After the discharge cycle, a new water seal is established in the bowl and separation continues. Oil is fed into the purifier by using an external pump. The operating water slide and the complete hydraulic system controlling the sludge discharges are inside the bowl. There is no possibility of contamination from external sources.

The separator bowl is designed for partial discharge of separated sludge, which means that there is a minimal loss of oil. The drive system is of belt drive, or the worm and worm wheel.
The feed system is via external pump system. No operating water tank is required as the purifier requires water at high pressure and this is achieved by an external water pump which operates only during the discharge cycle. Discharging have to be made at regular interval of 15 to 20 minutes and each discharge cycle last for a period of several seconds. The discharge system is fully automated with manual override system.


Operating principle of palm oil purifier

Separation takes place inside a rotating bowl. The teed is introduced to the rotating centrifuge bowl from the top via a stationary inlet pipe, and is accelerated in the
distributor, before entering the disc stack. The separation of liquid-liquld-solids takes place between the discs, with the oil phase moving through the disc stack to the center and is discharged via a stationary centripetal pump. The water and solids separated from the oil moves out to the periphery, the water is led via channels in the top disc to the paring chamber, where it flows out of the centrifuge via holes in the bowl hood. The solids are collected in the periphery of the bowl, from where it is discharged intermittently. The solids discharge is achieved by a hydraulic system which at preset suitable intervals forces the sliding piston to bend down and thus opening the solids ports at the bowl periphery.



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