For starch recovery clarifying decanters are primarily used for dewatering starch, pulp, fibers and proteins as well as for fruitwater separation.
Especially in starch processing the solids inside the decanters are relatively difficult to convey in the centrifugal field, this can trigger the stick-slip effect.
The solids move inconsistently creating dynamic loads on the mechanical components. Possible effects: Strong torque shocks and oscillations, which create loads on the drive shaft. This leads to increased fatigue and wear to machine components such as the bowl, scroll, gearbox, shafts and coupling. Stick-slip increases the risk of unplanned, expensive downtimes with costly repairs. Until now customers were only able to tell their decanters are affected when it was too late and damage had been occurred.
With GEAs new Active Torque Control feature starch customers cannot only safely detect the stick-slip effect, ATC also puts an end to it. On top, the decanter does everything by itself, automatically. Our new sensor-based monitoring and control method precisely detects the onset of torsional vibrations on the coupling and, depending on their intensity, avoids them by automatically changing the differential speed. Changes in differential speed are minimal as ATC can detect if its intervention was successful in ending the stick slip effect or not.
So our customers can be sure that their decanters still discharge the solids as dry as under stick slip effects possible. Thus, Active Torque Control saves them not only trouble with expensive downtimes due to machine damages, it also saves them unnecessary drier costs due to a poorly operated decanter.
Nozzle separators are used for washing and concentrating the crude starch as well as for gluten thickening. A high quality starch can only be obtained if the small fiber fragments, lipids, proteins and dissolved substances are washed out from the starch fraction efficiently. For this process steps GEA offers 2-phase and 3-phase nozzle separators,...
Even the best centrifuges cannot function optimally if they are not partnered with control systems of equal quality. For their range of separators and decanters, GEA offers standardized as well as tailor-made solutions for machine automation with many features to meet customer requirements.
Is a FAT (Factory Acceptance Test) of your centrifuge not possible on site due to current travel restrictions, a very tight schedule or other urgent reasons? Are you generally looking for ways to make business processes more digital and to sustainably reduce costs and time?
Here, too, we are at your side with the professional quality you are accu...
Corrective repairs for your GEA separators and decanters
Diameter of solids discharge in a decanter centrifuge
GEA Varipond C
Let’s get connected – digital solutions for GEA centrifuges
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