 Turboscreen Decanter Centrifuge
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.
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.
|
Type & Model No. |
TSD
250/360 |
TSD
350/450 |
TSD
450/600 |
TSD
600/750 |
TSD
750/900 |
TSD
80/1000 |
TSD
1000/1200 |
|
Drive Motor (appr. kW) |
22 |
45 |
90 |
132 |
160 |
200 |
250 |
|
Length (appr. mm) |
2500 |
2800 |
3150 |
3350 |
4000 |
4200 |
4600 |
|
Width (appr. mm) |
1800 |
1850 |
2300 |
2500 |
2800 |
3000 |
3250 |
|
Height (appr. mm) |
920 |
1020 |
1300 |
1500 |
1800 |
1900 |
2100 |
|
Weight (appr. kg) |
1900 |
2650 |
4500 |
7000 |
11500 |
13500 |
18000 |
|
* Actual capacities depend
on the properties of material and their separation characteristics.
|
Advantages:
- Clarifying and drying in two separately designed stages.
- No compromise between clarifying and drying sections.
- Pre-thickening of the solid material with following break-up of the cake over the end
of conical drum plate to a large screen section.
- Even for high solid throughputs, the screen drum provides sufficient volume a thin solids layer.
- Large diameter screen drum, produces higher centrifugal force when compared with
normal screen bowl designs. - High yields with minimum loss of solids and recirculation of the clarified
liquid.
- Efficient washing on screen with high centrifugal force.
- Separate drain of the washing liquid and the mother liquid.
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