Classification of Dryers.
Definition
Drying is defined as the removal of liquid from a product usually with application of heat.
Equipment used for the purpose of drying are called “Dryers”.
Classification of Dryers.
Static Bed Dryer:
In this type of dryers, there is no relative movement among the solid particles being dried but there can be bulk motion of the entire drying mass.
E.g. Tray dryer, freeze dryer, etc.
Moving Bed Dryers:
In this type of dryers, the drying particles are partially separated so that they flow over each other.
E.g. Drum dryer
Fluidized bed dryer:
In this type of dryers, solid particles are partially suspended in an upward-moving gas stream i.e. the particles are in a fluidized state.
E.g. Fluidized Bed Dryer (FBD).
Pneumatic dryer:
In this type of dryers, the drying particles are entrained and conveyed in a high-velocity gas stream.
Spray Dryer.
Commonly Asked Questions.
Give classification of dryers.
Labels: Pharmaceutical Engineering, Pharmaceutics
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