fluid bed dryer


Fluid Bed Dryer manufacturer / Fluidized bed dryer

Fluid Bed Dryer manufacturers  / Fluidized bed dryer :

A Fluid Bed Dryer is designed for fast and uniform drying of powders, crystals and medium sized pellets. The Fluid Bed Dryer finds application in Pharmaceuticals, Bulk Drugs, Dyes & Chemicals, Phyto-Chemicals, Catalysts, Food Products & Starch derivatives, Pesticides etc.

A fluidized bed dryer (also called fluid bed dryer) is a kind of equipment used extensively in the pharmaceutical industries to reduce pharmaceutical powder and granules’ moisture content. Drying is essential for wet granules for compression into the tablet and modifying viscous and sticky materials’ characteristics. Drying is commonly the last step in the unit process before compression into tablet form and packaging.

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). Heat transfer is accomplished by direct contact between the wet solid and hot gases. The vaporized liquid is carried away by the drying gasses. Sometimes to save energy, the exit gas is partially recycled.

Fluid Bed Dryer offers a lucid solution to drying of wet granules, crystalline or coarse materials. It utilizes the principle of passing the hot air at a high velocity through the bed of the material to be dried, thus causing it to fluidize.

The blower situated on the exhaust side of the dryer operates no negative pressure principle, which creates the induced draught and sucks in the fresh air into the dryer. A stream of hot filtered air is introduced from the bottom of product container containing the wet material. This container is provided with the air distribution plate and Dutch sieve. The air stream is passed through the bed of the material and fluidizes the product particles by creating the turbulence in the product container. Due to fluidization each particle gets surrounded by hot air, which leads quick & uniform heating and drying. Filter bags provided at the top prevent escaping of particles from the machine.

A Fluid Bed Dryer is designed for fast and uniform drying of powders, crystals and medium sized pellets. The Fluid Bed Dryer finds application in Pharmaceuticals, Bulk Drugs, Dyes & Chemicals, Phyto-Chemicals, Catalysts, Food Products & Starch derivatives, Pesticides etc.

We are among the most trusted firms, engaged in manufacturing, supplying and exporting Fluid Bed Dryer Machine. Designed in compliance with international quality norms, these products are manufactured using quality components and material, procured from the reliable vendors of the market. We also have R&D experts who conduct regular researches to improvise our Fluid Bed Dryer Machine.

Fluid bed dryer has a lot of advantages, but also not always the best for some clients. If you want to learn details about the fluid bed dryer, then you can scroll to the page bottom to check it out.

Fluid bed dryers. The average consumer has most likely never even heard of them. But in the world of bulk processing, fluid bed dryers have established themselves as dependable and multi-functional processors; capable of completing a variety of critical tasks.

If you need to import a fluid bed dryer for your business, then bombay engineering  can be your best manufacturer. Check all bombay engineering works fluid bed dryers. To directly connect with us click here

Principle :

A fluid bed dryer is better known by name because hot air (gas) or ambient air is allowed to flow upward at high pressure through a perforated bottom of a vessel containing a bed of particulate solids or wet granules. The velocity of hot air is more than the granules/particles’ settling rate by which they remain suspended in a stream of hot air. This condition is called a fluidized state. The hot air surrounds every granule/particle and completely dries them.

Construction :

Two types of FBD machine are available, vertical and horizontal, made up of stainless steel or plastic. The vertical type is used for batch drying, and the flat is used for continuous drying. A detachable vessel is placed at the bottom of the dryer for the loadingAS3zs34 and unloading of material. This vessel has perforated mesh through which hot air with high pressure is passed. Bag filters are placed above the vessel for the collection of dried material.

Working : 

The material to be dried is placed in a detachable vessel at the bottom of the dryer. The air is introduced from below through the prefilter, heated utilizing heaters installed therein. Simultaneously fan is also allowed to work. As the air velocity increases, the bed expands, and further growth causes turbulent motion of particles called fluidization.

The granules/particles remain suspended in the air stream. A state of pressure is reached on a later form of pressure at frictional drag on the granules/particles is equal to the force of gravity. The particles rise in the airstream due to the gas’s high velocity; this condition is called a fluidized state.

Bag filters :

These are placed above the fluid bed drying vessel for the recovery of particles and dried material. Various features of theses filter bags are:

  1. These are made of different types of material or fabrics- cotton, nylon, polyester, satin, polypropylene.
  2. These can bear high pressure of hot air or high flow rates
  3. Durable construction
  4. Good resistance to wear and abrasion
  5. These are available in different pore sizes, thicknesses, fabrics, permeability.
  6. Anti-static materials are also available.
  7. These are available in different sizes which can easily fit in equipment.

Advantages of fluidized bed dryer:

  1. Thermal efficiency is 2-8 times than tray drier
  2. It is available in different sizes having a drying capacity in the range of 5- 250 kg/hour.
  3. Free-flowing granules/particles are made.
  4. For mixing the material with high efficiency, it can also combine the material with high efficiency.
  5. For both batch and continuous drying, you can use it.
  6. Loading and unloading of material is effortless due to detachable vessel
  7. Higher drying temperatures than tray and truck dryer.


• Tri-level filtration using: 20 microns for Pre Air filtration 5 microns for Secondary Air filtration 0.3 microns for Final Air filtration through HEPA

• Air Dehumidification on special demand.

• Inlet / Outlet dampers have a proportional control valve.

• Proportional control temp controller.

• Inlet / Exhaust Location: Several alternatives to suit customer requirements.

• Wash in place

• Control: PLC monitor with the printer as optional.

• Specially designed explosion flaps.

• Intrinsically safe system of earthling with low voltage.

• Steam radiator In SS to SS construction.

• Inflatable Silicone Seals used in the system.

• 2 Pneumatic Cylinders 1 for the Bag Up and Down movement and the other for Impact Bag Shaking

• Complete SS 304 Ducting for Air Exhaust.

• Specially designed Broken Bag Detector.

• Double skinned SS 304 AHU with a built-in Face and By-Pass.

• Specially designed anti-static and anti-sparking blower.

• High static high-efficiency blower installed.

• Completely Tool-less AHU.

• Strategically mounted observation windows provided for viewing drying operation.

• Flush Sampling port provided for extracting small quantities of the coated product during operations.

• Capacity is available from 2.5 kgs. To 300 kgs.

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Description BF – 30 BF – 60 BF – 120 BF – 200 BF – 250 BF – 300
Capacity of Dryer in Kgs at 0.6 Kg / Ltrs bulk density 30 -50 50 – 70 120 – 150 200 – 220 250 – 270 300 – 320
Working capacity of Product Container in Ltrs 50 100 200 335 420 500
Total Volume of Product Container in Ltrs 100 200 420 650 800 1000
Blower Motor HP 5 10 15 20 25 30
Heater Load K.W. 18 36 54
Steam Consumption in Kgs / hr 25 55 110 180 240 330
Width 1000 1300 1710 2000 2000 2000
Length 2040 2300 2480 3970 3200 3200
Height 2585 2950 3650 3800 4100 4100

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