The spray drying process: a superior answer to the food industry’s needs

Whilst the spray drying process is used in both pharmaceutical and industrial applications, it’s probably the agri-food business that is the most regular employer of this approach. Spray drying for dairy products in the shape of milk powder was an extremely common use of this process, which requires a special chamber called a dehumidifier drying tower. Whole-fat milk, skimmed milk, buttermilk and whey can all be processed in this way. Nowadays, milk powder is often created from skimmed milk, especially when creating recombined dairy products. This powder is also used for feeding infants. Other food products that frequently receive the spray drying treatment include coffee, eggs, tea, cereals, a range of spices, stevia, vitamins, animal feed, colourings, starch and starch derivatives and even blood!

Description of the spray drying process

All companies using a spray drying tower are facing challenges. Atomization drying towers are subject to external & seasonal variations. The mixing ratio (absolute humidity) of the upstream air is a determining element in the capacity of the tower. In summer, when this ratio is high, the capacity decreases, whereas in winter, this ratio is lower, the capacity is higher. These variations make it more difficult to operate the tower with a high risk of production disruption.

Dessica ™ Systems’ control the humidity of the upstream air of the spray drying towers to obtain constant and stable intake conditions.

What makes the spray drying process so effective?

Spray drying technology centres around a large dehumidifier drying tower, complete with a humidity control system that supplies dry air for this spray drying tower. Many businesses and industries use this technique – and for good reason! The spray drying approach offers a superior way to dry large quantities of a variety of products in a relatively short space of time. For a start, it is generally a method that offers good end results without incurring sky-high costs.

Spray-dried products have the advantage of being free-flowing, rather than forming flakes, which offers multiple benefits from a transportation and logistical point of view. Spray drying also creates powders that are stable – both in the physical sense of the term and with reference to chemical properties – and which are comprised of particles of consistent size. Finally, it’s a technique that can be ‘fine-tuned’ relatively easily, for instance, in the production of inhalable particles.

Benefits of the spray drying technology

  • Minimize the risks of production interruption due to climatic variations and the sticking of products on the Tower walls
  • Maximise the capacity of the drying tower and stabilized the residual moisture in the final product
  • Optimize and reduce the energy consumption using a patented innovative technology

 

The quality of our products, the efficiency of our installation and the impact on your work processes will be almost immediate.

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