FSD™ size 0.8 to 12.5 fluidized spray dryers- ideal for small-scale production of coarse, dustless and free-flowing agglomerates

 

Features:

  • Small-scale production and product development
  • Multi-stage drying
  • Integrated chamber fluid bed incorporated in the chamber base
  • Excellent product flexibility and excellent thermal efficiencies
  • Drying of heat sensitive and aromatic products
  • Handling of sticky and hydroscopic products in a continuous operation
  • Available plants sizes: FSD-0.8, 4.0, 6.3 and 12.5.

 

Multi-stage drying technology
The FSD™ fluidized spray dryers feature special multi-stage drying technology that is ideal for small-scale production of coarse, dustless and free-flowing agglomerates. Heat-sensitive and aromatic products can be successfully dried. Sticky and hygroscopic products are handled efficiently in a continuous operation.

Development of the FSD™ process has resulted in the IFD™ concept, which integrates the bag filter into the drying chamber.


Fluidization process
The feed is sprayed from the atomization nozzle (two-fluid or pressure nozzle) mounted in the ceiling of the drying chamber into hot drying air introduced through the process gas disperser.

The vigorous fluidization of moist powder in the fluid bed, located at the chamber base, plus recycle of fines from the cyclone or bag filter attachment leads to spray drying taking place in a powder-laden atmosphere, resulting in agglomeration.

Agglomeration
Small single particles dissolve instantly in water, but powder consisting of small particles is difficult to disperse. Large particles are easy to disperse in water, but dissolve only partially.

Agglomeration optimizes quick dispersion of the agglomerates as well as quick and complete dissolution of the small particles forming the agglomerate. Furthermore, agglomeration improves the product’s flowability and reduces dust problems during powder handling.

Agglomeration is a result of wet and/or semi-dry particle collision. Control is achieved by adjusting atomization, temperatures and fluidization velocity and by returning dry fine powder to the wet spray.

Space requirements, open mode
FSD-0.8
LxWxH: 3.0x2.5x3.0 m
FSD-4
LxWxH: 6.0x4.0x5.0 m
FSD-6.3
LxWxH: 8.0x4.5x6.5 m
FSD-12.5
LxWxH: 9.0x4.0x7.0 m 

 

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