Fluid Bed in Workshop

Fluidized Bed Dryers & Coolers

Materials processed in a Fluidized Bed Dryer or Cooler float on a cushion of air or gas.  The process air is supplied to the bed through a perforated distributor plate and flows through the bed of solids at a sufficient velocity to support the weight of particles in a fluidized state.  Bubbles form and collapse within the fluid bed of material promoting intense particle movement.  In this state the solids behave like a fee-flowing boiling liquid.  Very high heat and mass transfer rates are obtained as a result of the intimate contact between individual particles and the fluidizing gas.


Hi-Temp Fluid Bed

Hi-Temp Fluid Bed

The design of the distributor plate ensures that the fluidizing gas is evenly distributed across the area of the bed. The gas velocity is such that only the very fine material fraction is carried over to the dust collection equipment.  A high turndown ratio of production capacity is possible and fluctuations of the feed rate are easily absorbed.  In most cases, there are no moving parts in contact with the product.

Design variations include:

  • Stirred Fluid Beds
  • Deep Fluid Beds
  • High Temperature Fluid Beds
  • Contact Tubes and Plates
  • Multiple Zones and Stages
  • Integral Drying/Cooling


  • Provides extended residence times
  • Provides intimate contact between drying/cooling gases and products
  • Multi zones, velocities, temperatures, drying & cooling
  • Option for easily removable bed plates
  • Can be designed for open circuit partial gas recycle and SSD
  • Plug flow or well mixed
  • Can be designed with  straight sides or with an expanded canopy
  • Flexibility of residence time and temperatures
  • Option for brick, castable and metallic lined washable refractory
  • Up to 90% of the thermal duty can be supplied/removed by installing contact heat exchange tubes within a deep fluidized bed


  • Ideal for removal of surface and bound moisture in powder, crystalline or granular materials
  • Good thermal efficiency
  • Can handle a wide range of materials, particle size distributions and material cohesiveness
  • Enables quick replacements, minimizing shutdown times and maintenance requirements, especially useful for hygienic applications
  • Enables energy savings and system integration
  • Plug flow is especially suited to products that require longer residence time and a relatively tight moisture specification
  • For use as an elutriator or avoid excessive carry-over
  • Good when turndown is required
  • Enables high inlet temperatures for non-heat sensitive products which reduces the capital and running costs
  • Reduces airflow and plant size and improves cost, emissions and power consumption

Process Flow Diagram

Static Fluid Bed

Static Fluid Bed

Аналитика GEA

Josep Masramón and his daughter stand in front of their GEA batch milking installation.

How batch milking supports sustainable dairy farming

The latest evolution in automated milking introduces batch milking – a dairy farming practice where cows are milked in groups at fixed milking times, usually two or three times per day. The automation technology is helping to...

Прямо из воздуха

Доступ к безопасной по санитарным нормам воде по-прежнему остается проблемой во многих странах. Из-за болезней, вызываемых грязной питьевой водой, и ежедневных походов за ней многие дети не могут посещать школу. Благодаря сотрудничеству...

Сотрудники GEA — это люди, у которых есть цель

Следуя своей основной миссии — Engineering for a better world (Разработка технических решений, способствующих улучшению условий жизнедеятельности) — компания GEA создает культуру «предпочтительного работодателя», которая предлагает...

Получайте новости от GEA

Будьте в курсе инноваций и историй GEA, подписавшись на новостную рассылку от GEA.

Связаться с нами

Мы всегда готовы помочь! Сообщите минимальные данные, и мы предоставим ответ на ваш запрос.