Fluid Bed Dryer working principle - RAVI INTERNATIONAL fluid bed dryer parts

The Ravi international – Fluid bed dryer working principle are as follows.

–Material to be dried is placed in the bowl-type vessel.
–Air is introduced from the top and heated at the required temperature by the heaters.
–The air is filtered through the filter and then passes through the bed of the material at the bottom.
–The airflow is generated by the fans fitted at the top of the equipment.
–The airflow rate and the operating temperature are adjusted by the control panel.
–As the flow of air increases, the bed expands and particles of powder start to rise up in a turbulent motion.
–Regular contact with air causes the material to dry.
–The air leaving the FBD passes through the filter to collect the fine particles of the material.
–FBD bags have a finger-like shape to increase the volume of the drying bed that helps to increase the drying rate and decrease the drying time.
–The vaporized liquid is carried away by the drying gases. Sometimes to save energy, the exit gas is partially recycled.

Ravi International Fluid bed dryer working principle (also called fluidized bed dryer) is a kind of equipment used extensively in the pharmaceutical industries to reduce the moisture content of pharmaceutical powder and granules. The equipment works on a principle of fluidization of the feed materials. (watch video).

A typical fluidized bed dryer consists of the following components

a. Air preparatory unit.

b. Product container.

c. Exhaust filter.

d. Exhaust blower.

e. Control panel.

f. Air distribution plate.

g. Spray nozzle.

h. Solution deliver.

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 parts — `fluid bed dryer working` principle

Ravi International also manufacture other dryer such as Rotocone vacuum dryer, Rotary Vacuum paddle dryer, Vacuum Tray Dryer, Agitated nutsche filter dryer

Salient Features

Contact parts in SS 316 ISS 316L can be provided as per user requirement.
Short drying time and Low drying temperature.
Uniform drying.
Rapid exchange of granules.
Single piece retarding chamber and finger bag chamber with inflatable gasket.
Electric I steam I hot water circulation -air heating systems with SS heat exchangers.
Fully automatic bag shaking I lifting I lowering arrangement.
Intrinsically safe earthing mechanism.
Compact design.
Inlet-air filtration system having 20 Micron Coarse Filter, 5 Micron Pre Filter and 0.3 Micron HEPA filters (Efficiency 99.9 %) can be provided as an option.
Differential pressure gauge across micro-vee and filter bag can be provided as an option.
Air Handling Unit: Consists of Inlet Air Filters (3 Stage) including HEPA and heating coils.
Retarding Chamber: Houses the Finger Bag Assembly
Bag Shaking and Lowering Device: Pneumatically operated specially designed three stage bag shaking arrangement.
Gaskets: Food grade Silicon
Exhaust Air Blower: Centrifugal fan with backward curved impeller in SS I Aluminium I MS painted.
Explosion Vent with Rupture Disc: For relief of explosion or any excess pressure built up, a rupture disc of appropriate material and thickness is provided in the explosion vent.
Sampling Device: To carry out periodical sampling & analysis of material.
Inlet and Exhaust Dampers :with PLC Interface.
Earth Safety Relay: A safety earth circuit relay is provided to discharge static charge.
Solid Flow Monitor: To detect product leakage from filter bag can be provided as an option.
Wash In Place (WIP) System: Can be provided as an option.