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.
Diameter of solids discharge in a decanter centrifuge
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各行各业都在努力实现净零排放目标,同时遵守严格的脱碳法规和立法。与此同时,公司必须平衡日益增长的质量、产品开发和工艺优化需求,此外,还必须努力提高盈利能力。应对这一挑战需要采取 GEA 提供的协作和整体方法。
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