The FBD process is usually utilized for granulation, in which good powders are remodeled into granules with enhanced flowability, compressibility, and uniformity. The fluidized mattress facilitates the even distribution on the binder Alternative, resulting in uniform granule development.
Despite the aforementioned pros, fluidized bed dryers also have their limits. One of many more major limitations is their incompatibility with really gentle or fluffy supplies, as these may be blown out in the mattress by the upward flowing gasoline.
We'll, hence, working experience lots of difficulties In regards to drying sticky components as they don’t go freely.
The main principle powering the Performing in the fluid mattress dryers is, Air is permitted to movement via a mattress of stable powdered product in an upward direction. This produced so the velocity is increased in comparison to the environment rate of all particles.
The FBD (Fluidized Bed Drying) procedure can be a greatly made use of technique in the pharmaceutical sector for drying and granulation. It entails the use of a fluidized bed, exactly where particles are suspended and agitated by a stream of air or fuel.
Typical servicing and cleansing with the fluidized bed machines are essential to make certain its effective Procedure.
In fluidization course of action, very hot air is released at large force through a perforated mattress of moist solid particulate.
Elevated gas managing is needed on account of significant exhaust fuel recirculation for prime thermal effectiveness operation.
2. here The granules are lifted from the bottom and suspended from the stream of air this condition is named fluidized condition.
Loading of elements requires including a fresh batch of moist granules into your merchandise chamber via detrimental stress feeding, products might be sucked from your superior shear mixer chamber through a feeding tube.
The particles are lifted after which drop back randomly so that the resultant mixture of solid and fuel functions similar to a boiling liquid. This affliction known as a fluidized state. The superb gas-sound Get in check here touch with leads to much better heat and mass transfer than in static and moving beds.
The conventional scorching air fluidized bed dryers aren't a good choice of dryer when dealing with toxic or flammable solids given that There's Risk of hearth or explosion of flammability limits are exceeded.
Even so, if the powder is sticky Or hygroscopic, you will discover likelihood of powder forming sticky layer to the finger bag area, consequently, just shaking via the pneumatic cylinder may not help.
If Element of the thermal Power for drying is equipped by the internal heat exchanger, superior thermal efficiency is frequently achieved.