Application: Test of the unit for clients interested in this fountain nozzle spray dryer for production of special materials such as, for example, ceramics.
Capacity: The evaporative capacity is 20-60 kg/h and the minimum feed requirement is about 100 kg.
Specification: The chamber has a 2.0 m diameter, a 2.0 m cylindrical height and a 60 degree conical bottom. An electrical heater is used on the 630 kg/h of drying air. This has a maximum inlet temperature of 250 °C.
Feed is supplied by a piston pump or a peristaltic pump and is atomized by a counter-current (fountain) pressure or two-fluid nozzle. Product can be recovered from cyclone, bag filter and/or venturi scrubber.
Selection of spray dryer design and selection of atomizer must be evaluated depending on the properties of the liquid to be dried, the particle size distribution, and the quality of the powder to be produced.
In commercial use, three dryers in this series have the same air flow rate and evaporative capacity ranging from 20-60 kg/h, depending upon drying temperatures.
The smallest spray dryer in the series, P-6.3, can be equipped with either a rotary atomizer or a two-fluid nozzle and is recommended for those products classified as 'easy-to-dry'.
The SD-6.3-N and SD-6.3-R, with their larger diameter drying chambers, are preferred when the product requires longer residence time for completing the drying process, or where the powder specification requires a more coarse particle size.
All have proved ideal for continuous small scale production of special powders and/or products, where cGMP or equal requirements involve validation.
In-house expertise also covers engineering of custom designed plants to meet special specifications:
- Validation documentation
- Aseptic execution
- CIP systems (Cleaning-In-Place)
- Spray cooling
- Fire and/or explosion protection
- Emission-free operation
- Active carbon bed for solvent adsorption
- Closed cycle layout
- Vapour condensation for solvent recovery
- HEPA filtration