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FLUIDISED BED DRYER
FLUID BED DRYER is designed to introduce the hot air stream at the base of the product container which is filled with the material. Induced draught is created by means of blower and fresh air is sucked in to the unit. The fresh air is heated by means of electrical heaters or steam or thermic fluid heaters.
This hot air stream expands the bed of material at certain velocity & reating turbulance in the product. The phenomenon is known as fluidisation and offer conditions which are almost ideal for drying. Fluidisation produces full agitation of solid particles and since each particle gets surrounded by hot air, heat transfer is extremely high and uniform. The product is dried fast without appreciable loss of heat. Filter bags prevent particles escaping from the dryer.
Suitability
The conventional drying method of drying products in tray dryer is rather inadequate and trouble some. They occupy large floor space, have very high drying times, are labour intensive and offer uneven drying. On contrast Fluid Bed Dryer occupy comparatively lesser floor space, are very easy to operate & can dry material in least time as compared to tray dryer. In Fluid Bed Dryer, temperature distribution through out the product is uniform and the heat transfer rate is very high. Due to the reduce drying time high production rates are achieved.
As the product is in close contact with drying air at low temperature and also for short duration, the physical and chemical properties of the products are generally not effected and therefore the dryer can effectively be used for heat sensitive products. Due to the continuous movements of product during drying lump formation, case hardening etc. are minimized.
The Fluid Bed Dryer are most suitable for drying granular, crystalline, coarse or similar material in pharmaceuticals, fine chemicals, dyes, food and allied products.
The Fluid Bed Dryer is not suitable for drying liquids or pasty materials.
Fluid Bed Dryer
Electrically / Steam & Thermic Fluid Heated in which general structure, made out of mild steel & coloured in Standard Model & made out of S.S.304 quality material & polished to the matt finished in GMP Model, but contact parts i.e. Product Container and Retarding Chamber, are made out of S.S.304 / S.S. 316 quality material, with Non-Flameproof blower motor, ( Flameproof motor provided on demand ) suitable to dry wet material.
The capacity ranging from 10 / 30 / 60 / 120 / 150 / 200 / 250 / 500 / 650 / 1300 Kgs., with Steam heating / electrical heating & thermal Heating facility.
Special Features
- Uniformity in drying and reduction in drying time.
- Atmospheric inlet air is filtered by means of non woowen filter cloth. PRE /MICRO V & HEPA filters can be provided on demand on extra cost to prevent any fine dust to pass through the products.
- Digital temperature indicator cum controller for inlet air & Digital temperature indicator for outlet air, are provided for electrically heated model.
- Digital temperature indicator are provided for inlet & outlet air, in steam / thermic fluid heated model. ( Temperature controlling valves will be in customer scope of supply )
- Manually operated air dampers provided to control the inlet and outlet air flow.
- An explosion safety flap of adequate capacity at the rear of dryer and an earthing point to prevent static charge in the machine.
- Contact parts RETARDING CHAMBER & PRODUCT CONTAINER are made out of SS304 & polished to the mirror finished and other parts are made out of SS 304 and polished to the matt finished in Gmp model & made out of m.s. & coloured in standard model.
Optional (Provided on Demand on Extra cost)
- PRE /MICRO V & HEPA filters can be provided on demand on extra cost to prevent any fine dust to pass through the products.
- Pneumatic system for Lifting of product container & finger bag shaking with butter fly valve.
- Flameproof motor with weather proof / flameproof enclosure for operating panel.(It is recommended in steam heated model only. Power panel should be mounted out side the flameproof area)
- Safe earthing arrangement with low voltage relay.
- Solid flow sensor monitor for monitoring the leakage in the air discharge filters.
- Differential pressure gauges across the air discharge bag and air inlet Hepa Filters.
- "PLC" based power panel with "MMI" based operating panel for process automation.
- Extra product container with trolley for more utilization of machine.
- Online sampling port at product container for sampling of material without shut-off the machine. Food grade silicon gasket set.
- Facility of mounting of blower with motor & heating chamber with air filteration unit out side the granulation room.
- Steam radiator made out of m.s. SS304 / SS316 on demand.
- Contact parts made out of SS 316 or SS316 L instead of SS304.
- Pneumatically operated inlet and outlet dampers.
- Silencer to reduce the noise level of exhaust air.
- A.C. Frequency drive for blower motor.