Spin Flash Dryer

Additional Details

Spin Flash Dryer is used for effective and efficient method of removal of surface or on bound moisture from a feed product. Spin Flash Dryers are designed for continuous drying of cohesive and non-cohesive pastes, filter cakes and high viscosity liquids. Under the action of hot air and mechanical dispersion, the wet cake appears granular and gets fluidized. Instantaneous exchange of heat and mass takes place. The dried materials are taken in the collector as powder products.

The spin flash dryer system consist of double shaft screw followed by mono screw to feed homogenized material into dryer housing at controlled rate. Hot air is supplied by a temperature controlled air heater and speed controlled fan, entering the drying chamber at a tangent in order to establish a turbulent, whirling air flow. The rotor at the base of the drying chamber fluidizes the product particles and dispersed using the heat from the air stream, the material dries as it is conveyed. Drying takes place in a matter of seconds. The particle classification orifice on the top of drying chamber allows finer product to pass with exhaust gas to powder collection system while the larger particles remain in the air flow for further drying and powdering. Elevated drying temperatures can be used with many products since the flashing off of surface moisture instantly cools the drying gas without appreciably increasing the product temperature. A simple Flash Dryer is also designed to handle materials that can be suspended directly in air, requiring removal of free moisture.