This gives spray drying more options for different dry particles due to the different viscosity and mixture of the liquid feed

This gives spray drying more options for different dry particles due to the different viscosity and mixture of the liquid feed. Furthermore, the solid particles produced in the process have a higher chemical and physical stability when compared to its liquid counterparts. These solid particles can even be used as precursors for the production of capsules and tablets in drug delivery systems.
There are two operation configurations in the spray dryer, open-loop and closed-loop. The open-loop uses air as the drying gas that is not recirculated. The open-loop configuration is usually preferred because it is more cost effective and stable. The closed-loop, on the other hand, uses an inert gas that is recycled in the drying chamber. In addition, the closed-loop is used to prevent the mixing of explosive gases and to manipulate the oxygen sensitive substances.