Fluidized bed dryer

hot aircontinuouscooler

JÖST vibrating fluid bed dryers for bulk materials use convection to transfer the heat energy required for drying, i.e. via direct heat transfer, so the heat transfer medium comes directly into contact with the product. Product is moved in the dryer using the micro throwing movement, a well-known method in vibration feeding technology that can be individually set up for each application and machine type through the adjustment of swing, frequency and articulation (throw angle). Heat transfer is typically achieved using temperature-controlled warm or hot air, a process into which any available exhaust fumes or other waste heat sources can also be integrated. Depending on the application, dryers can be divided into different zones for drying and downstream cooling. They can also be set up for fresh-air mode or exhaust-air and partial-air recirculation. Models with resonating and stationary exhaust air hoods are also available. Vibrating fluid bed dryers can be delivered in a variety of materials including normal or stainless steels, or a combination thereof. In order to dry the product in question, temperature-controlled warm or hot air is introduced through a fluidization plate. The plate speed can be selected specifically for each product, resulting in the fluidization of the product and efficient circulation of the individual product particles. The special design of the air distribution chamber(s) below the fluidization plate, with the fluidization plate above it, ensures uniform distribution of air and airflow for the product layer on the plate, even with changing layer thicknesses.