Fluid Bed Equipments

The great advantage of Fluid bed technology lies in uniform, repeatable product quality with gentle treatment of products. Despite all the development in drying technology, fluid bed dryer/ processor has unmatched drying speed.
Naturally fluid bed equipment has universal application. You can use it in combination with high shear mixer as a very rapid dryer or in combination with suitable nozzle system as a combined granulator/ dryer and top spray coater.
Whether you use the machine as a dryer or a single pot processor, in every case it provides you with a system which sets the standard for product quality and effectiveness. The fluidization technique is efficient for the drying of granular solids, because each particle is completely surrounded by drying air. In addition, intense mixing between the solids and hot air results in uniform conditions of temperature. composition and particle size distribution throughout the bed.
Capacity 30 kg
Capacity 60 kg
Capacity 120 kg
Capacity 250 kg
Process Filters :
Single Shaker Bag Filter :
A simple, basic filter bag with fingers of appropriate numbers. During cleaning the filter bag is shaken by a cylinder which dedusts the filter. Fluidization stops during the dedusting or filter cleaning.
Cartridge Filters :
Stainless steel filter cartridges are cleaned one at a time so that fluidization continues even during filter cleaning. Here there are more than one stainless steel cartridge filters and large amount of filters are available for continuous fluidization. Unlike bag filters, these filters can be cleaned in place.
Salient features of Fluid Bed Equipment
Design confirming to cGMP norms.
Filter bags fitting by inflatable silicon rubber tube.
Pneumatically operated gasket for sealing the product container from top as well as bottom.
Filteration system comprising of 20 micron washable filter \ followed by 5 micron pre filter.
Finally air is passed through 0.3 micron HEPA filter.
Stainless steel backward curved centrifugal blower.
Integrated retarding chamber cum filter bag housing.
Dished end and tapered bottom.


All contact parts of Stainless steel 316 and tapered bottom chamber, blower casing, explosion chamber, supporting structure, trolley of product container, control panel etc. of stainless steel 304.

Positive earthing arrangement with low voltage relay.
Auto pneumatic shaking with timers and butterfly valve.
Explosion flap duly fitted with aluminum material.
On-line sampling device.
Silicon rubber gasket between product container and retarding chamber.
Differential pressure gauges to monitor pressure across inlet air filter and filter bags.
Electrical locking between inflatable gasket & the motor with alarm.
Auto temp. controller for steam radiator.
Infinitely variable control damper at outlet for regulating airflow.
Machine with vertical explosion flap is also provided on request.
Quick action butterfly valves ensures that the system is totally contained or enclosed.


Solid particle detection system or Torn filter bag detection system is also available which switches OFF the machine blower if it detects any solid particles in the exhaust ducting.

Raking can be provided on request in the product container and will be operated by pneumatics.
Allen Bradley PLC for automation with key board, display unit and printer.
Through The Wall Type design to reduce noise level and isolate maintenance from manufacturing.

Air conditioning system having heaters with face and a bypass system to maintain and regulate temperature precisely. 


'C' type half round rims for process unit and product container, ensures that there is absolute safety for the machine operator.


12 bar design is also available on request, where there is no relief ducts and the entire structure is capable to withstand shock up to 12 bar. We use nitrogen flushing as inert medium and QASV valves for preventing damage to the inlet or exhaust duct in case of explosion.


Blower of suitable capacity with flame proof motor. Complete blower and impeller in S.S. 304. No carbon steel parts are used in blower.

Police filters of 20 micron can be fitted on the exhaust duct for exhaust air purity or for safety reasons.

Blower can also be fitted with silencer to reduce noise on the service floor.

A single arm or multi arm top spraying system can be fitted in Fluid bed granulator/dryer to achieve excellent spray granulation using best available peristaltic pump.

S.S. 316 , cartridge filters with blow back system can also be provided if required.

Clean in Process :
CIP system consists of two nozzles spraying water and rotating at high speed inside the main chamber . These are connected by various solenoid systems such that three different wash mediums can be made to spray inside the bowl one after another. When running under PLC control, PLC will determine the opening and closing of various valves along with discharge opening. Client will have to provide for sufficient volume water of each type to our CIP wash central unit which is mounted over a trolley. Thus three connections for various water types should be provided in the same room and near location of dryer machine so that these connections can be made easily while going for CIP wash. A sample port is also provided on the discharge of dryer so that water sample can be taken out after each wash for lab testing if needed. There is an audio buzzer that will indicate that sample has to be taken out during drain. Drain water released through bottom valve in the plenum, which is connected to drain provided in the room. One central nozzle which rotates while spraying the water along with a nozzle mounted in the plenum assembly cleans the bowl and discharge assembly thoroughly.
Safety Features :
Machine can't be started without safe earthing.
Sensor for torn filter bag or solid particle detection system ensures contained process. It stops the machine if there is any detection of solid particles in exhaust duct of the machine.
Explosion flap ensures that there is no damage to the person operating the machine if there is an explosion inside caused by mixture of air and dust.
Blower stops if the air pressure in filter bag locking gasket drops below the set value.
Blower stops if the product container sealing gasket air pressure is below the set value.
Blower can't be started unless the container is properly positioned.
Particle Coating & Pallet Coating
This process is used to apply a coating to the granules or pallets resulting in favourable barrier properties. This type of barrier coating alters the product property with respect to Stability in storage, hygroscopic property, free flowing property, solubility, sustained release property, appearance, taste, odour etc. Here the spraying is done from bottom using cylindrical tubes through which spraying is done. It is also known as Wurster coater. Here in this process the spray is done inside a hollow cylinder and from the bottom of this cylinder the pallets are allowed in small quantity to enter the hollow cylindrical tube. Thus the particles are passing the bottom spray guns in orderly manner quickly moving upward the tubes to avoid agglomeration. Once they are outside the Wurster compartment, they move downward outside the compartment where they dry an another layer of coating can be supplied. Since the movement of the particle or pallets inside the Wurster chamber ( hollow tube) is totally controlled it ensures uniform coating.
Spray gun Inlet pressure via. PLC Control with air pressure indication.
Spray gun cleaning pressure via. PLC Control with air pressure indication.

Product chamber and product bowl locating switch with inflatable gasket for top and bottom sealing of product container.

Differential Pressure indication in PLC for Product bottom mesh clogging.
Differential Pressure indication in PLC for HEPA filter.
Differential Pressure indication in PLC for 5 microns pre filter.
Differential Pressure indication in PLC for Outlet exhaust filter assembly.
Earth monitoring.

High sensitive up to 0.05 bar pressure switches to indicate and control pressure in inflatable gaskets either for product container sealing or filter bag locking seals.

Inlet temperature alarm.
Product Bed temperature alarm.
Alarm for Inlet humidity.
In case blower RPM reaches a minimum of 1,000 RPM, the heaters will not operate.
Explosion pressure to be indicated.
Motor chocking indication.
Spray gun chocking signal.
Spray temperature monitoring.
Agglomeration & Granulation :
This process is used in Fluid beds to form granules from a powder. The fluidized powder is wetted with binders using top spray guns. Binders are based on solvent or water and fluidized powder is wetted until liquid bridges are formed between particles. Segregation of powder doesn't take place as different powders are glued together on a micro scale. Since there is no impinging force in the fluid bed equipments the granules are weak and having good solubility. Effervescent products are made much better using this process. Once the granules are made they are dried in the equipment using hot air. Using this technology the granules that are formed are dust free granules with free flowing properties. Granules also have good dispersibility with excellent solubility due to porous structure. It also have low bulk density with wide grain size distribution.
MODEL SEC 15 SEC 30 SEC 60 SEC 120 SEC 200 SEC 250 SEC 300
Container Vol : Litres 50 100 220 430 590 780 950
Batch Capacity : Kgs 15-20 30-40 60-75 120-140 200-225 250-280 300-330
Heating Load : KW for Electrical Heating 9 18 36 54 Electric Heating Not Recommended
Motor H.P. 3 5 10 15 20 25 30
Drying Temp oC 50-80 50-80 50-80 50-80 50-80 50-80 50-80
Approx. Steam Consumption Kgs/Hr (Steam Pressure 3 Kg/cm2) 15 25 50 100 160 200 250
Equipments For Solid Dosage Production Scale
   Equipments for Solid Dosage     (Production Scale)
Rapid Mixer & Wet Granulator
Fluid Bed Equipments
Fully Automatic Coating Systems
Octagonal Blenders
Container Tumbler
Commuting Mill
Vibro Sifter
Oscillating Granulator
Paste Preparation Kettle
Sifting & Milling Equipment
   Equipments for Solid Dosage     (Laboratory & Pilot Scale)
Laboratory Fluid Bed Dryer/Granulator
Rapid Mixer & Wet Granulator R&D MODEL (3,5 & 10 Lits)
Equipment for Lab & Pilot Scale Operation
   Equipments for Dust Free Material     Transfer
Mobile Hoist
Lifting & Tipping Device
Vacuum Transfer Devices

Office : A-9, First Floor, Raj Industrial Complex, Military Road, Marol,
Mumbai - 400 059. India.
Tel : +91-22-2920 4962 / 2920 6774, Fax : +91-22-2920 6113.
Factory : Plot no. 114, Bhadakmora, G.I.D.C., Vapi - 396 195,
Gujarat, India.
Tel : +91 - 260 - 2422774, Fax : +91 - 260 - 2400409

E-mail : director.saral@gmail.com, director@saraleng.com
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