Spray Drying & Encapsulation
 | NozzleThe two-fluid nozzle disperses the liquid into fine droplets, which are dried quickly and gently in the drying chamber. |
Spray Chilling
Spray chilling or Spray congealing is a different way of using the Mini Spray Dryer B-290. A melting for example of fatty acids or alcohols, waxes, stearates or polyethylene glycols is dispersed into a cold gas stream leading to a solidification of the droplets to particles, which can be separated. This process is already used in cosmetics, pharmaceutical industry and food and feed.
Till now, research and process development of spray congealing methods was only possible from the pilot plant scale and up. With a new system from the laboratory instrument supplier BUCHI Labortechnik AG, it is possible for the first time to use it in the laboratory scale. The established Mini Spray Dryer B-290 has been extended , that spray chilling can also easily be performed.
The accessory consists of a thermo regulated feed vessel, a heater with control and a feed valve. An additional external thermostat is not required. The temperature range of the melting is between 30° and 70°C.
The Dehumidifier B-296 is recomended if the substance has a low melting point. It cools down the cooling gas to -5 °C.
Many posible applications can be found on the free online Spray Dryer database.
In the video section you can see how easy it is to convert the Mini Spray Dryer B-290 into a Spray Chilling device.
- Spray Chilling