Antibiotic production usually involves a spray drying process. Many components in industrial processes require spray drying, such as ceramic materials, paint pigments, detergents, catalysts, salts and a variety of other materials can be prepared by spray drying.
Depending on the material to be dried, the spray dryer can use heated air or heated inert gas; when combustibles need to be dried, gases such as nitrogen should be used to reduce the risk of reaction.
A spray dryer is an industrial drying system that combines the processes of atomization and heating to dry materials. Atomization is the process of dispersing material into extremely fine droplets. In spray drying, the material to be dried is mixed with a liquid and fed into the drying chamber at high speed through a nozzle. Heat is then forced into the container, causing the liquid to evaporate, leaving behind fine solid particles.
The spray drying process begins with the collection of the material to be dried and the solvent (usually water). When the solute and solvent are mixed, the sludge or slurry produced by this mixing is spun centrifugally and then passed through atomizing nozzles at high speed. While suspended in the drying chamber into which the material is injected, it is exposed to heated gas.
As the liquid solvent evaporates, the solvent falls to the bottom of the chamber. The dried material is collected and prepared for the next stage of processing. The evaporation rate and necessary size distribution of the product determines how much air is required, which will affect the size and cost of most system components. Therefore, these are important factors when designing a spray dryer.
Spray drying is often used when the product needs to meet precise requirements in terms of particle size distribution, particle shape, bulk density and residual moisture content. Advantages of spray drying include particle size control, improved flow properties of the dried solids, evaporative cooling, reduced corrosion and shorter residence times compared to other industrial drying processes.
https://www.stardrying.com/
