International Processing Trade Fair for Powder, Bulk Solids, Fluids and Liquids

26 - 28 September 2023 // Nuremberg, Germany

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Exhibitors & Products POWTECH 2023
Zoom Image LOGO_FSD® Spray Dryer

FSD® Spray Dryer

LOGO_FSD® Spray Dryer

FSD® Spray Dryer

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Uniform coarse, agglomerated, free-flowing and dustless powder is in strong demand in most industries. The FSD® Spray Dryer is the ideal choice for such production.

The FSD® Spray Dryer, combining spray- and fluid-bed drying, is designed to provide optimum drying efficiency and the best product quality in agglomerated powders. The design, specific to the different industries, has gained worldwide recognition among producers of a wide range of food products and chemical compounds.

The FSD® Spray Dryer operates with three drying stages, each adapted to the moisture content present during the spray drying process.

The liquid feed is atomized and fed into the drying chamber by a set of nozzles. The drying air enters vertically, and at a high velocity, through the air disperser, thus ensuring optimal mixing with the atomized liquid. Evaporation takes place instantaneously while the droplets pass through the drying chamber. The drying chamber and air flow have been designed to prevent particles from sticking to the chamber walls, leading them directly to the integrated Fluid Bed at the bottom of the drying chamber where the second drying stage will take place. Finally the powder is led to a VIBRO-FLUIDIZER® Fluid Bed for the final drying and cooling.

The drying air leaves the chamber at the top, thus allowing for an extremely well defined secondary agglomeration where the fine particles in the drying air collide with the spray from the nozzles. The exhaust air passes through a filter to weed out the remaining particles. The fine particles discharged from the filter will be returned to the drying chamber, and – depending on the particular agglomeration required – they will be directed either to a static Fluid Bed or to a nozzle-based facility. Where non-agglomerated powder qualities are required, the fine particles will be led directly to the VIBRO-FLUIDIZER® Fluid Bed.

The FSD-GRANULATOR® can be applied for purposes of additional agglomeration – other than what is obtainable by returning the fines back into the drying chambers. This patented system allows additional liquid to be added into the stationary integrated fluid bed – a feature not possible in conventional Spray Dryers. The liquid admitted, may be water, a liquid of the same composition as the feed, melt or a solution containing various substances.

POWTECH offers concrete solutions for packaging-intensive industries. Industry guide


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