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Pilot-scale Spray Dryer

Description

The spray dryer in the Food Hall of the Agrotechnology & Food Sciences Group is for research & educational purposes. It is suited for operation by students in an educational setting (e.g. course Food Engineering FPE-20306) and allows research activities e.g. aimed at controlled agglomeration or making small batches of a new food product under specific spray drying and agglomeration conditions. The equipment is owned by the Laboratory of Food Process Engineering, but is also used by Wageningen Food & Biobased Research to ensure optimal use of the equipment throughout the year.

 Spray Drying

Spray drying is a common process in food industry. Main purpose of spray drying is to convert liquid formulations into a shelf-life stable powder for food or feed applications. Spray dried powders have superior quality as it is a relatively mild drying method.

 The Advantage of a Pilot-Scale Spray dryer

 Availability of this pilot-scale spray dryer is ideal for scale-up to a relevant industrial scale. This research facility is unique in comparison to other pilot-scale facilities, which are usually tailored for toll manufacturing rather than research. This pilot-scale spray dryer is not only unique in its scale, but it also has high flexibility to vary spraying nozzles, air distribution and agglomeration conditions to systematically study their impact on instant powder properties and energy consumption. The DW350 allows production under hygienic conditions.

 

Technical Details

  • Use: Spray drying of food & feed materials
  • Drying chamber: Diameter = 1.5 m, length = 2 m
  • One phase drying: Up to 25 kg/h water evaporation
  • Feeding capacity: 30-40 L/h
  • Liquid flow measurement: Coriolis mass flow meter
  • Nozzle types: High pressure (80 bars) / two-fluid nozzle
  • Number of nozzles: One or two overlapping nozzle sprays
  • Air distributor: Rotaswirl for short drying time and intense droplet-air contact
  • Inlet air flow: Max. 210oC
  • Air dehumidification: Optional inlet air adsorption drying down to 2 g/kg moisture content
  • Fines recycle: Controlled agglomeration via dosing
  • Access points & test kit: For analysis of T, RH, P, flow.
  • Materials: Stainless steel contact parts
  • Cleaning: Manual / No CIP possibility
  • Scrubber: For clean air exhaust
  • Possibility: Spraytec system to study agglomeration
 


Last edited by Oscar de Vos on 2021-10-06

Our expert(s)
Jos Sewalt
Maarten Schutyser
Arnoud Togtema
Contact our expert(s)
Brand

Spray dry works

Type

DW350

Organisation

Food Process Engineering

Subdivision

Food Process Engineering



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