In this case, the Good movement meter performs an essential position to prevent product decline within the fluid bed dryer. when filters are destroyed powder arrives out via exhaust duct wherever SFM feeling the powder circulation and shut down the dryer.
Products bowl: holds the mattress of wet particles. The leading vessel where by the drying method normally takes location. It truly is made to permit for that suspension of particles inside of a fluidized point out. It’s generally fabricated from stainless-steel for durability and ease of cleansing.
Substantial strain drops results due to the necessity to suspend all the mattress in fuel which equally results in high Vitality intake.
When this comes about all of the solid particles will get blown up and be suspended within an air stream. The stable mattress is Hence transformed into a boiling liquid which is known as the fluidized point out.
As the moist particle suspends in scorching air, the moisture content material of strong particles decreases to realize the desired reduction on drying (LOD). The drying vapors carry the vaporized liquid far from the moist strong particles. Sometimes, the leaving gasoline is recycled to preserve Strength.
Mechanical shaking is The simplest way to take out the dust layer and it is completed through the pneumatic cylinder at the established intervals and would seem We now have two filtering chamber the shaking is alternated between the two.
FBDs grew to become important in pharmaceutical field for processing heat-sensitive drugs and achieving steady merchandise high-quality.
The granules stay partly suspended while in the gasoline stream if the air velocity is increased in comparison to the settling velocity from the granules. Following some time, a pressure amount is attained exactly where the force of gravity and frictional drag about the particles are equal.
The fluidized bed dryer has a stainless-steel chamber possessing a detachable perforated underside referred to as the bowl.
This equipment might have some major issues if It isn't taken care of in the correct method. Here here are some from the typical difficulties:
Because the temperature from the vapor decreases, so does the temperature of the mattress. Drying stops once the humidity level drops from lower than one%.
In the event the velocity on the air is greater compared to the settling velocity of granules; and fewer than the velocity for pneumatic conveying, the solids are buoyed up and develop into partially suspended from the gasoline stream.
This air flow will cause the particles to become floating, resembling a fluid, that's why the term click here “fluidized.” Therefore, Every particle is surrounded by very hot air, leading to quick and uniform drying.
A lot of organic and natural powders acquire electrostatic demand all through drying. To avoid this, economical electrical earthing of your dryer is essential.