What is fluid bed dryer?

What is fluid bed dryer?

Fluidized bed dryer (also called fluid bed dryer) is a kind of equipment used extensively in the pharmaceutical industries to reduce the moisture content of pharmaceutical powder and granules. In fluidization process, hot air is introduced at high pressure through a perforated bed of moist solid particulate.

What is the principle of fluid bed dryer?

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.

How does a fluid bed granulator work?

Granulation in a fluidized bed granulator is achieved by suspending the powder in the air of the fluidized bed and then spraying the binder solution from nozzles that are either positioned above or below the powder bed depending on the type of the granulator.

What is FBD in pharma industry?

Fluidized bed dryer (FBD) is well known and widely used equipment in granulation area of pharmaceutical manufacturing. It is used in the granulation process for drying the material to get desired moisture content in the tablet formulation granules required for perfect compression of tablets.

What is fluid bed process?

The fluid bed granulation process (also known as agglomeration) involves suspending particles in an air stream and spraying a liquid from the top of the system down onto the fluidized bed (top-down spray). Particles in the path of the spray get slightly wet and become sticky.

What is the difference between FBP and FBD?

Foreign Bill Discounting (FBD) The only difference between FBP and FBD is that it is extended under usance bills· which have been accepted by the LC issuing bank or the importer for payment at determinable future date.

What is the principle of granulation?

Granulation is a process in which powder particles are made to adhere to each other, resulting in larger, multi-particle entities, so called granules. If such a process is performed without adding liquids, this is called dry granulation.

What is RMG principle?

Working principle of RMG: Rapid mixture granulator works on agitation, tumbling. The impeller is responsible for uniformly mixing wet granules, and the chopper helps in a break or reduced particle size. At the starting process or during binder addition, the impeller and chopper generally operate at low speed.

What is the FBP principle?

The main principle involved in the FBP is the air suspension in which the material to be coated is suspended in the coating material with the help of air stream. The FBP has a wide range of applications such as drying, granulation powder or particle coating and pelletizing.

What is fluid bed processor technology?

Fluid Bed Processor is a very good technology to make granules from powder using top spray method. The technology is most suited as the same equipment can be used for top spray granulation, bottom spray coating & drying all 03 parameters in the same equipment thereby reducing the nos of equipment used for a process.

How is FBD CFM calculated?

Flow rate = Velocity x Area of cross section. Total capacity required = 884 / 0.8 = 1105 m3/hr = 651 CFM.

What does fluidized mean in a bed dryer?

Fluidized Bed Dryer • ‘Fluidized’ means something that behaves like liquid. In the fluidized bed dryer, the mixture of solids and gas behave like a liquid and solid are called fluidized. • It provides good contact between hot air and particles to obtain efficient drying.

What are the parameters of a bed dryer?

In order to improve operation, efficiency, and reproducibility of a fluidized bed dryer, some parameters need to be controlled. These parameters are categorized into: Apparatus parameters: Those controlled by the equipment. Process parameters: Those controlled by the process.

What kind of vibration is needed for fluid bed drying?

Very fine, light powders or highly elongated particles may require vibration for successful fluid bed drying. Materials with moisture content up to 80% such as some polymers, dye stuffs and molecular sieve catalysts can also be accommodated. 4 9.  The product is dried fast without appreciable loss of heat.

How is hot air introduced into a fluidized bed?

In fluidization process, hot air is introduced at high pressure through a perforated bed of moist solid particulate. The wet solids are lifted from the bottom and suspended in a stream of air (fluidized state).