Use case: Gearbox for Sugar Production

Adsorber on Gear

GIEBEL adsorbers are used in the production process of sugar based on sugar beets and sugar cane. The carefully designed aeration dryers are dimensioned to save space.

Südzucker processes up to 270,000 tonnes of sugar annually at the Rain factory. During processing, a central conveyor belt transports the beets to the cutting machines. Here, Südzucker relies on industrial gear units and motors from various manufacturers, such as SEW. Südzucker is one of Europe’s leading suppliers of processed sugar products.

Plant data

  • Use adsorber from 12l free volume
  • Adsorber in outdoor use possible
  • 100 gearboxes in operation
  • Standstill corrosion no longer occurs with the use of adsorbers
  • Campaign from September to December

Gearbox without adsorber

Due to a less insulated industrial hall and the fact that all gates are opened regularly during operation, there is humid ambient air with large temperature fluctuations. This greatly favors the formation of condensation. The air drawn in and the constant contact with the environment ensure that humidity flows into the gear unit and condenses when it cools down. This leads to corrosion with particle abrasion and thus damage to the gearbox. Smooth operation of sugar production is not guaranteed. Repairs cause high maintenance costs and downtime.

Necessity of an adsorber

Respiratory dryers are indispensable for protecting sugar production gearboxes from condensation water damage. By using adsorbers, the humidity in the gearbox is reduced and the dew point (temperature above which the air liquefies) is shifted to high minus degrees. This measure permanently protects the gear oil from water ingress. An oil change can thus be prevented or delayed by a long time.

Adsorber in sugar production

In the production of foodstuffs, the respiratory dryer must be selected correctly. In addition, since the gearbox in the case of sugar production is in operation only a few months of the year, the desiccant should be protected by valves from loading by moist ambient air. In this way, a maintenance interval of 3-4 years can be achieved.