Décanteur centrifuge Turbo Screen
De conception identique que le twin-cone mais avec une grille d'essorage à la place du cône additionnel. Une accélération plus importante associé à un essorage complémentaire permet d'obtenir un liquide clarifié et une humidité résiduelle la plus faible du solide.
The Turbo-Screen Decanter is an advancement in solid/liquid separation technology and has significant design and process engineering advantages. With the usual screen bowl centrifuges, the screen section is connected to the drum cone at the point of its smallest diameter with identical dimensions. This design has the disadvantage of a restricted volume and consequentlya deep solids layer, with reduced centrifugal forces particularly in the dewatering section of the centrifuge.
The Turbo-Screen Decanter combines the advantages of a solid bowl centrifuge and screening centrifuge in two distinct stages, to optimize the effect.Â
In the first stage of the process, the solids are dewatered on the conical part of the solid bowl section.
The liquid volume of the drum and the length of the drying beach are infinitely adjustable with the weir plate. The clear liquid is decanted over this weir plate. At the rear of the bowl the pre-thickened solids are thrown over the end of the conical section onto significantly larger screen drum.
In this second stage the solids cake is broken up and redistributed to give a thinner layer of material due to the larger screening area. Simultaneously the solid layer is exposed to a significantly higher centrifugal force, as a result of the larger diameter, which enhances the filtration and lowers the residual moisture.
As only a relatively small amount of liquid reaches the screen section along with the pre-thickened solid material, the loss of ultra fine material through the screen drum is low and can be disregarded when re-circulated into the centrifuge feed.
The generously proportioned screen drum with a thin layer of solid material is also particularly suitable for washing. Naturally the washing liquid can be discharged separately from the mother liquor.
