Fluidised bed and steam drying news

The drying of pressed sugar beet pulp in a pressurised fluidised bed with superheated steam is widely used in the sugar industry and can be considered to be state of the art for energy-efficient drying concepts in combined plant systems. The process has been used on a large scale in the sugar industry for more than 20 years.

In the past campaign, BMA subjected existing drying systems at various locations to a number of refinements. These systematic, process engineering modifications allow the driers to work more efficiently and reliably.

Feeding pressed pulp into a fluidised-bed drier is a critical phase in the drying process and can lead to malfunctions. The ability to determine the fluidisation conditions in the first drier cells provides more detailed insights into the process so that critical situations can be detected at an early stage and therefore malfunctions can be avoided.

Further investigations have shown that the height of the fluidised bed has a considerable effect on adequate product transport and on the degree to which the heat from the circulated steam is utilised and, consequently, on water evaporation.


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