What is the principle of a fluidized bed?
Fluid bed dryers work on the principle of fluidization, a process where a material is converted from a static solid-like state to a dynamic fluid-like state. In this process, hot gas or air is introduced through a perforated distribution plate into the area holding the material.
What is the function of fluidized bed dryer?
Fluid or Fluidised bed dryer is a kind of equipment used extensively in the pharmaceutical industries to reduce the moisture content in raw ingredients like powder and granules. The working principle of this equipment includes fluidization of the fed materials.
What is fluidized bed technology?
Fluidized bed technology in dryers increases efficiency by allowing for the entire surface of the drying material to be suspended and therefore exposed to the air. This process can also be combined with heating or cooling, if necessary, according to the specifications of the application.
Why is it called fluidized bed dryer?
A high-pressure Hot air from the supply is passed through the perforated container containing a wet mass of the granules, after some time granules, particles started to suspend in the air to become dry (called (fluidized state), the process is called fluidization.
What are different advantages of fluidized bed dryer?
The advantages of fluid bed drying include low investment and maintenance costs, large-scale continuous production, lower air temperatures than spray drying and a relatively short drying time compared to freeze drying and vacuum drying.
What is the fluidized bed drying process?
The particles are taken up in the dry & hot air stream and dehydrated through evaporation. Read on for the full explanation of the fluidized bed drying process. You’ll find the fluid bed dryer in pharmaceutical industries and application of fluidized bed dryer are humongous.
What is the advantage of the fluidized bed dryer?
Fluidized bed dryer has a high drying rate and the material is dried in a very short time. Material remains free-flowing and uniform. FBD bags are finger-like in structure to increase the surface area of the drying bed that helps to increase the drying rate and decrease the drying time during…
Why does the fluidized bed dryer produce high porosity granules?
Larger batch quantities will also need more time in the fluidized bed dryer than smaller batch quantities. The fluidized bed dryer produces quality granules. These granules have high porosity, and in the pharmaceutical industry this is very important for several reasons: Porosity defines the quality of a particle being porous or having small holes.
What is fluidized bed agglomeration?
Fluidized bed agglomeration (Fig. 14.3a) is an encapsulation technology which involves spraying a liquid (which can be a binder solution or water) onto particles. Fluidized bed drying (FBD) has found many applications for drying granular solids in the food, pharmaceutical and agriculture industries.