The FBD process is usually utilized for granulation, exactly where fantastic powders are remodeled into granules with improved flowability, compressibility, and uniformity. The fluidized mattress facilitates the even distribution of the binder solution, leading to uniform granule development.
The drying procedure normally takes spot in 3 stages until finally the end position is attained (At the tip position the reliable particles dampness level is equivalent or below 1%)
There are actually differing kinds of fluidized bed dryers, each with its personal structure and application. Here are several prevalent styles:
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The blower consistently draws and excels air from Fluidized mattress dryer. The airstream may possibly have very little particles called fines. The filter bags capture the fines of their pores but this trigger the formation of a dust layer that clogs the filter baggage resulting in a pressure fall.
In FBD, a scorching air (gasoline) is handed by way of a perforated bottom of your container holding the product or service granules that have to be dried at significant tension.
This allows for successful heat transfer and uniform drying given that the particles are continually in movement. The new air passing in the mattress carries absent moisture from your damp substance, causing fast and powerful drying.
Improved gasoline here handling is necessary resulting from significant exhaust fuel recirculation for prime thermal performance Procedure.
When the velocity of air is bigger compared to the sedimentation fee of the granules, the granules stay suspended inside the gas stream.
The Preliminary startup action in a very fluid mattress dryer is to include a fresh batch of wet granules for the merchandise chamber. The Feeding substance is often sucked with the substantial shear mixer chamber by way of a feeding tube less than detrimental pressure.
Because the temperature from the more info vapor decreases, so does the temperature of the mattress. Drying stops once the dampness degree drops from lower than 1%.
After bag filters, this air passes via HEPA filters since this air comes in immediate connection with the product or service. This processed air is heated by a heating process which delivers the temperature of air according to the technical specs.
This air circulation causes the particles to become floating, resembling a fluid, consequently the term “fluidized.” Due to this fact, Each and every particle is surrounded by hot air, resulting in immediate and uniform drying.
The dryer might be divided into numerous distinct zones with impartial control of airflow and temperature to ensure drying can manifest at the most attractive rate in each phase with no sacrificing efficiency or harmful heat-sensitive components.