Moisture and Humidity Control for Spray Drying Production...without increasing capaity

Spray drying systems are widely used in food & beverage, pharmaceutical, chemical, and many other industries to produce fine and uniform micron size particles. Spray Dryer requires large quantities of hot air for drying. The quality of the final product (powder) is affected by the quality of inlet air entering the dryer.

Spray Dryer DiagramThe Spray Dryer mixes hot air with an atomized (sprayed) liquid stream in a drying chamber/atomizer which leads to evaporation and produces free-flowing dry powder. The inlet air has to be fresh and dry, free of contamination and odourless. Since the ambient air changes throughout the year, the humid air can also enter the Spray Dryer affecting its process. Thus, the drying temperature and time inside the dryer needs close monitoring to restrict loss due to varying humidity levels. These varying inlet conditions need to be monitored by an experienced operator to adjust the parameters for consistent output.