Vibrating Fluid Bed Dryers

Vibrating fluid bed dryers are well suited for:

  • Material that has a wide particle size distribution — fluid bed dryer vibration will help to discharge oversize particles that will not fluidize.
  • 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 vibration 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 vibrating 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 vibrating fluid bed dryer, where necessary.
  • Sanitary, U.S.D.A. (3A) approved vibrating fluid bed dryer construction.

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 vibratory 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

Types of Vibrating Fluid bed dryers

tema-process fluid bed dryers Shaking fluid bed

Shaking fluid bed

units for continuous operation and suitable for sticky materials with a wide particle size distribution. The shaking motion improves the fluidization and transport of any material within the fluid bed. Drying gas temperature up to 750 °C and product temperatures up to 400 °C are achieved.

fluid bed dryer unit

Fluid bed units

A fluid bed is an effective unit to thermally treat powders, crystalline products, pelletized or extruded materials. High heat and mass transfer are obtained as a result of the intimate contact between fluidizing air and product.

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Industries and examples where Fluid Bed Systems can be used for

The TEMA fluid bed systems can be used for all kind of thermal processes like : Drying, cooling, calcining, sterilizing, baking, puffing, roasting, cooking, blanching, steam stripping etc.

The TEMA Fluid Bed systems are used for drying and/or cooling of:

Mineral Industry

Fluid bed dryers are used for processing natural materials, our systems are designed to minimize energy usage, easy to maintain and operate, rigid
construction for challenging environments. The systems are used for drying, cooling, calcining, dedusting, etc

Examples:

  • Sand
  • quartz sand
  • silica sand
  • gypsum
  • slag sand
  • limestone
  • kaolin
  • potash
  • phosphates
  • coal
  • mineral ores
  • etc.
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Food and Feed Industry

Fluid bed systems are used for a wide variety of food and feed ingredients, hygienic design as requested in this industry with gentle and even drying to preserve the quality of the materials. Special executions with CIP, GMP design, increased residence time, operating with low oxygen levels are available. The systems are used for drying, cooling, roasting, expanding, removal of solvents, cooking, decontamination, deactivating, etc.

Examples:

  • Bread crumbs
  • rice
  • sugar
  • dextrose
  • herbs,
  • spices
  • flaked cereals
  • extruded cereals
  • milk powder
  • lactose
  • tomato pulp
  • citrus pulp
  • fish meal
  • fish feed
  • animal feed
  • return bread
  • etc

Chemical Industry

In the chemical industry fluid bed dryers are used to dry all kinds of crystalline materials, powders, extrudates, etc. Special care is taken to select the correct material of construction, minimize effluent to the environment, reduce energy consumption. Systems are used for drying, cooling, removal of solvents, chemical reactions, etc.

Examples:

  • Salts,
  • sodium chloride
  • herbicides
  • CMC
  • detergents
  • ammonium sulphate
  • sodium sulphate
  • potassium sulphate
  • polymers
  • PVC
  • PVDC
  • fertilizers
  • plastics
  • EPS
  • fibres
  • coopper
  • sulphate
  • metal salts
  • etc.
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fluid bed dryer manufacturer

Biomass and Waste Industry

In the biomass and waste industry fluid bed dryers are used to dry biomass materials and solid waste materials, sludges and slurries, in order to increase the heating value for biomass and alternative fuels and reduce the volume. Drying takes normally place at lower temperatures between 100 – 200 gr. C by use of waste heat from CHP or boilers.

Examples:

  • RDF
  • poultry
  • litter
  • cow dung
  • dewatered slurry
  • digester sludge
  • fermenter waste
  • lemon peel
  • orange peel
  • manure
  • paper sludge
  • wood
  • biomass
  • etc.

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