The successful heat and mass transfer while in the fluidized bed considerably decrease the drying time in comparison with other solutions. This not merely increases efficiency but in addition minimizes the risk of degradation or loss of volatile elements from the solution.
Higher drying temperatures is often potentially utilised. But it's impossible in tray dryers and truck dryers.
Wet supplies is placed on perforated conveying floor. Heated air is passed from underneath conveying perforated surface area through the mattress of wet solids.
Similarly noteworthy is The reality that fluidized mattress dryers can retain close Charge of residence time and temperature disorders. Consequently, They may be suited to heat-sensitive materials.
Once the velocity of your air is greater in comparison to the settling velocity of granules; and a lot less than the velocity for pneumatic conveying, the solids are buoyed up and grow to be partially suspended within the gas stream.
The need to suspend the whole mattress in gasoline leads to substantial pressure drops and superior energy prices.
Granulating: Granulating is the method of making granules by spraying aqueous or natural and organic solvents within the combined powder.
The FBD method is really a broadly made use of approach in the pharmaceutical marketplace for drying and granulation. It offers many pros, like uniform drying, improved item quality, and diminished drying time. Good Handle and checking of approach parameters, along with frequent equipment maintenance, are critical for achieving best brings about the FBD method.
As the new air passes by way of container granules begin to suspend from the air to be dry (identified as a fluidized point out), the process is referred to as fluidization.
Tension control: The fluidized bed processor must be operated inside of Protected pressure limits to prevent more FBD usages in pharmaceuticals than-pressurization and the risk of explosion. Tension sensors and relief valves can help to stop stress-associated dangers.
FBD bowl loading: Inside of a pill production process, The complete Procedure of a Fluidized bed drier starts off Along with the loading of soaked granular substance through the granulator. The wet granules to generally be dried are put in the removable bowl of a vertical FBD.
• check here Inspection of FBD bag is performed for its integrity in advance of & once the usage and record in “FBD bag logbook”.
Confined particle dimensions array: Fluidized bed processors are typically only for processing particles inside of a specific dimensions assortment, and may not be well suited for processing quite fantastic or pretty coarse particles.
FBD baggage have a finger-like form to boost the quantity from the drying bed that can help to raise the drying charge and reduce the drying time.