Shaking Fluid Bed Dryers

Sluggish or sticky materials.
Temperature sensitive materials — a sub-fluidized condition can be created to produce plug flow and eliminate burning or discoloration of individual particles.
Fragile materials — low amplitude fluid bed dryer shaking and reduced fluidizing velocity create a gentle bed, which causes less degradation than conventional fluid bed dryers or other mechanical dryers.
Features and benefits of shaking fluid bed dryers:
Lower fluidizing velocities are required, making the fluid bed dryer system more energy efficient.
Easy to clean and maintain.
Re-circulated gas and closed-loop systems available for improved efficiency or solvent recovery.
Clean-in-place and fire suppression systems available as part of the shaking fluid bed dryer, where necessary.
Sanitary, U.S.D.A. (3A) approved shaking fluid bed dryer construction.
Shaking fluid bed dryer versus vibrating fluid bed dryer
At TEMA Process we use a more advanced technique, eliminating the disadvantages of a vibrating fluid bed dryer.

Vibrating fluid bed dryers
Vibrating fluid bed dryers use a large drive mechanism with the bed mounted on springs like a vibrating conveyor to move product through the dryer. The main disadvantage is that the dryer and the product are subjected to significant g-forces. These high forces typically cause friable product to break apart creating unnecessary and often unwanted fines and waste. In addition, the high g-forces will be transferred to the surrounding structures resulting in additional installation requirements, premature equipment wear, premature instrument wear and elevated noise. This causes the bed case to fracture and the drive mechanisms are subject to periodic refurbishment.

Difficult to control residence time
Products are subjected to significant g-forces
Premature equipment wear and premature instrument wear
Unnecessary and often unwanted fines and waste
Additional installation requirements
Noise
Tema Process Shaking fluid bed dryers:
Shaking fluid bed dryers solve the high g-force issue by eliminating the need for vibration and include a more advanced control systems that eliminates the need for continuous operator involvement. Product is moved through the dryer by a gentle shaking motion, Low Frequency / High Amplitude, which moves it forward in a step by step uniform manner referred to as plug flow. The g-force issue is eliminated allowing for smallest possible product deterioration, reduced foundation requirements and minimal noise output. A shaking fluid bed dryer system typically has the lowest life cycle cost via substantial savings in fuel consumption and maintenance costs.

Eliminating the need for vibration
More advanced control systems
Smallest possible product deterioration
Minimal noise output
Lowest life cycle cost
Savings in fuel consumption and maintenance costs
Our Tema Process Shaking fluid bed dryer in action
Shaking fluid bed dryers are frequently used for the drying of raw natural minerals or pre-processed minerals. The unique TEMA Process shaking drive mechanism allows for a uniform drying result for a large spread in particle size distribution ( 110 microns – 10 mm) , without disruptions of the fluid bed. This shaking design is suitable for capacities up to 100 t/h in a single unit.

TEMA Process B.V. is a specialised design and manufacturing company for Fluid Bed Systems for drying of minerals, chemicals, food, feed, biomass, etc. The TEMA Fluid Bed can be applied not only for drying, but also for cooling, roasting, torrefaction, puffing, blanching, stripping , spices and herbs sterilisation and pasteurisation and calcining.

TEMA Process B.V. manufactures continuous and batch fluid beds. Batch fluid beds are used when products integrity is required for example in the pharma industry or for small quantities of product. Continuous dryers / coolers can be delivered in static or dynamic (shaking, vibrating) fluid beds. Static fluid bed can be delivered with or without submerged heat exchangers.

Advantages of shaking fluid-bed dryer systems
Low energy consumption compared to other type of dryers
Accurate control of the residence time, product is dried uniformly
Gentle on sensitive materials (no friction)
Low operating costs
Cooling section integrated in dryer
Handling of sticky products (from centrifuges or filters)
Small footprint
Process flexibility
Reliable system, less downtime

https://youtu.be/Nlq3yWJZwHc