• Kilburn Engineering Limited

Fluid Bed Dryers & Coolers

Kilburn Engineering manufactures Fluid Bed Dryers and Coolers in technical collaboration with Nara Machinery Company, Japan, the world leader in this field. These dryers/coolers utilise the Fluidised Bed Technique to effectively dry many chemical, petrochemical and other products. What is fluidisation? Fluid means a liquid. A substance is said to be fluidised when it starts behaving like a liquid. When a determined quantity of air is passed below a perforated bed, carrying the substance to be dried, say PVC, the material starts bubbling and it behaves like a fluid. Much depends upon the substance, its moisture content, size of perforations, and airflow. The design of a commercial size fluid bed system involves a lot more than just heat-mass transfer calculations or sizing. Pilot plant tests, experience and field data are extremely important for designing an optimised fluid bed system for continuous application. Consideration of fluidisation velocity, operating temperature, particle size distribution, drying characteristic of material, distributor plate, bed height and dedusting system require pilot plant tests. The company has a full fledged test centre, where exhaustive facilities are available for pilot plant tests. All variable parameters can be adjusted to study the drying characteristics of a substance and thereby determine values of important parameters. This data is further supplemented with empirical and actual field data.