The Spray Drying Process
The use of the Spray Drying technique
Spray Drying is one of the preferred methods for the production of powders from aqueous (and/or organic-aqueous) solutions or suspensions.
This technique, developed at the end of 1800, involves the atomization of a liquid in a chamber where a hot gas recirculating. The drying process is almost instantaneous (see image below) as the material, consisting of nebulized droplets, exposes a very large surface to the drying fluid.
Continuous processing, production speed and low operating costs make spray drying one of the best drying processes for pharmaceutical and food products.
With the evolution of the technology, the Spray Drying technique today is not only used for drying liquids, but for microencapsulation of substances and for obtaining powders with advanced technological characteristics.
How Spray Drying works
A spray drying process consists of a sequence of four phases:
1 Atomization of the liquid to be dried (slurry)
2 Contact between hot gas and nebulized liquid
3 Evaporation of solvent
4 Separation of the dried product from the drying mediumInsights
Our spray drying technology
We have a latest generation spray dryer with exceptional efficiency and versatility, an excellent tool for the development of your products.
The spray dryer dryer designed to help scientists in rapid and effective R & D activities. Flexible and able to handle multiple drying and encapsulation processes.
The spray dryer specially developed for small-scale production while maintaining the technological performance of large industrial equipment and is one of the most advanced laboratory spray dryer on the market.
Every detail has been studied to replicate the behavior of an industrial production unit, maintaining an extremely compact design, allowing to quickly develop products with characteristics similar to the dust obtained on an industrial scale, minimizing development costs and scale-up efforts.
Depending on the technical needs, spray dryer equipment designed by APTSol can be classified into two groups, depending on their configuration.
They may be open cycle, i.e. exhaust gases (appropriately filtered) are discharged into the atmosphere, or closed cycle where the gas (after filtration and condensation) is re-introduced into the equipment circuit.