Small-scale spray dryer for R&D, scale-up, and small-scale production

Small-scale spray drying solution for process development

ANDRITZ Dedert small-scale spray dryers support R&D teams and manufacturers in testing, optimizing, and validating spray drying processes before full-scale industrial implementation. The systems are designed to bridge the gap between pilot trials and industrial production by enabling controlled small‑scale manufacturing and reliable scale‑up.

From pilot trials to industrial scale‑up

The small-scale spray dryer enables process development under industry-relevant conditions, supporting drying scale‑up and process validation while maintaining flexibility for product and parameter changes.

ANDRITZ Dedert small-scale spray dryer overview

ANDRITZ offers six standard sizes with different evaporation capacities. The systems are available in single stage and multi-stage configurations and can be equipped with standard components and optional enhancements to meet diverse processing requirements.

Sizes and evaporation capacities

PSD40: max. 12.0 kg/h
PSD50: max. 20 kg/h
PSD64: max. 50 kg/h
PSD80: max. 100 kg/h
PSD102: max. 210 kg/h
PSD120: max. 350 kg/h

These sizes provide a range of capacities suitable for various small-scale drying needs.

Advantages of ANDRITZ Dedert small-scale spray dryer:

Flexible plant design: Multiple options to enable different configurations and customize the system to meet customer requirements
Low installation time and cost: Skid mounted unit, plug-and-play unit, and easy installation
Six models available: with standard execution, available in single or multistage configuration
Safety: Compliant with NFPA and European VDI regulations, as well as OSHA compliant
Sanitary / hygienic design complying with GMP standards

Small-scale spray dryer plant design and modularity

Plug-and-play units

The modular plant design allows for easy installation and straightforward integration into existing pilot or R&D environments.

Customized configurations for diverse processing requirements

Systems can be configured as single-stage or multi-stage units and adapted with optional components depending on process and product needs.

The ANDRITZ Dedert spray dryer is also available as an industrial system.

Technical features

The standard single-stage unit includes:

Feed tank and water balance tank
Feed pump
Two-fluid nozzle atomization
Air inlet filters
Delivery fan (for PSD#64 and above)
Electric air heater and swirl-type air distributor
Drying chamber and high-efficiency cyclone
Powder double flap valve, and powder container
Exhaust fan
Pneumatic hammers on chamber and cyclone
Fire extinguishing and explosion protection systems
Explosion protection by flameless venting (for smaller units)
Explosion protection by suppression bottles (for smaller units)
Control/MCC panel with touch screen
Stainless steel support structure with stairway, platform, and railing

The multi-stage unit builds on the single-stage features and adds:

Pressure nozzle atomization (for PSD#64 and above)
High pressure pump (for PSD#64 and above)
Fluid bed
Air supply system for fluid bed (fans, electric heater, and ducting)
Fines return system with blower, piping, and diverter valve

Feed tank agitator and insulation
Pressure nozzle atomization
Centrifugal atomization
HEPA filter
Steam or indirect gas air heater
Ice water or desiccant wheel dehumidification
Cooling conveying system for single stage units
Two point discharge for single stage units
Rotary valve for powder discharge
Exhaust gas handling with bag filter or wet scrubber
Explosion protection by flameless venting or suppression bottles or vent panels or with combination
Additional powder container
Noise attenuation
CIP system (automatic or semi-automatic)
Closed-loop inert gas system for solvent handling
CIP kitchen

Applications of small-scale spray dryer

Food

Applications include flavors, dairy ingredients (such as whey protein, caseinates, infant formula, and so on) , food ingredients (such as yeast, plant proteins, fermented cultures, FOS and so on), and modified starches.