Fluid Beds

Fluid Beds

Fluid beds are the most versatile powder processing systems, being capable of performing several different duties many of which can be integrated within the one plant. Fluid beds can be designed to be batch fed or continuous in operation and can be static or mechanically assisted.

Some of the functions of a fluid bed include, drying, cooling, chilling, classifying, blending, agglomerating, coating and are common across the breadth of industry.

European SprayDry Technologies produce some of the most modern, cost effective and advanced fluid beds on the market.

We design and supply batch and continuous fluid beds in both static and vibratory models. The range spans from bench lab models to multi ton an hour processes.

Fluid Beds Design & Specification

Designs and specifications change depending upon the industry within which the fluid bed is to operate. Food and dairy plant have very high sanitary standards, are generally fitted with Clean in Place (CIP) systems with rounded corners. The vast majority of the fluid beds operating in the food and dairy sectors of industry are of the continuous type of fluid bed and would normally be manufactured totally from stainless steel with internal welds polished to a smooth surface.

Fluid beds sold into the chemical processing industry are more diverse with varying materials of manufacture employed, mild steel for non corrosive materials, with various grades of stainless steel and incolnel being equally prevalent. Additionally, static and batch process fluid beds are equally as popular as the continuous fluid bed.

Flexible & Cost Effective

Fluid beds are not only versatile but it is the most efficient and cost effective method of drying as all the particulates are exposed uniformly to the drying air conditions which can be accurately controlled to allow efficient drying of both heat and non heat sensitive materials.

Our design team has a vast experience designing the complete range of fluid beds, including close circuit systems for the production of materials with high explosive risk.

Agglomeration within fluid beds is a relatively simple operation with nozzles located internally. Similar plant is employed for coating and lecithination. Materials agglomerated within a fluid bed will produce particles up to approximately 1000 micron, the main drawback being the control of bulk density. To achieve a larger particle whilst maintaining a much higher degree of control over the bulk density agglomeration should be undertaken on a tower agglomerator.

Due to its flexibility and cost effective drying characteristics the fluid bed is often coupled with our spray drying systems to form multi stage drying systems. The effect of the fluid bed is to reduce the size of the spray dryer as powder is discharged from the spray dryer with a higher than desired residual moisture, the fluid bed then reduces the residual moisture to the desired level.

Two types of bed are employed in this role, a static bed which is an integral part of the spray dryer or a vibratory fluid bed. If the operation requires the fluid bed to incorporate other duties such as cooling, classifying or agglomeration etc then the vibratory is the design of choice.