Spray Dryer
FSD® Spray Dryer
Uniform coarse, agglomerated, free-flowing and dustless powder is in strong demand in most industries. The NIRO FSD® Spray Dryer is the ideal choice for such production
The drying process
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.
Additional agglomeration
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.
Related Products
COMPACT DRYER Spray Dryer
The COMPACT DRYER is the perfect choice whether it is a matter of whey powder or dense milk-powder production.
Conventional Spray Dryer
The conventional NIRO® Spray Dryer turns liquid into powder in a highly efficient manner. It is used within fields as diverse as the dairy, food and chemicals industries where it has won renown for its performance.
FILTERMAT® Spray Dryer
The FILTERMAT® spray dryer efficiently and gently transforms heat-sensitive and difficult-to-dry products into free-flowing, agglomerated powders.
MSD® Spray Dryer
The MSD® Spray Dryer is the preferred choice for many dairy products such as e.g. Milk Powder and Nutritional Formula where uniform coarse, agglomerated, free-flowing and dustless powders are in great demand.
