Article | REF: F2730 V1

Centrifugation and decantation

Authors: Bernard VEYNACHTER, Pascal POTTIER

Publication date: March 10, 2007

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4. Evacuation of liquid phases

Two main techniques are used for both separators and decanters.

  • Free exit

    The liquid is ejected from the bowl and collected in a collector in the separator housing. The product leaves the machine by gravity, and a pump must be used if the product is to be conveyed.

  • Turbine discharge

    A turbine, installed on one or more liquid phases, delivers the treated product under pressure. Discharge pressure can reach 6 to 10 bar.

    The product comes into much less contact with the ambient air than with a free outlet.

    Figure 14 shows the turbine discharge principle.

    An example of a pressurized...

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Evacuation of liquid phases