Rotary drum dryer

convectiongasfor wood

Wet material is fed via a rotary valve and a specially designed infeed chute into the rotating drum. There, the heat is transferred mainly through convection from the drying gases to the material for water evaporation. At the end of the drum, the material is pneumatically transported to cyclones where the material is separated from the drying gases. One portion of the drying gases is recircu-lated to the mixing chamber for energy recovery and reduction of dryer exhaust volume. Application Drying of Wood particles, e.g., sawdust, mini chips, recycling material for PB and pellet production Drying of Strands and wafers for OSB production Drying of Disintegrated seasonal annual crops and other biomass for a wide range of applications Customer benefits High capacity Optimized drum using FEM Low risk of fire and explosion Optimized cyclone design Internals designed according to material char-acteristics for high thermal efficiency and low moisture fluctuation High standard of safety and reliability Design acc. to ATEX directive 2014 / 34 / EU 3D modeling Technical features Fully integrated control of dryer and energy plant Gear box with frequency-controlled main motor and backup motor for emergency case Minimal air leakage due to proven seal technology Dryer exhaust gas recovery Fully integrated dryer deluge system Heat sources for direct heating Flue gases from Gas, dust, light and/or heavy oil burner Energy system (e.g., grate firing systems) Turbine exhaust gas Combination of heating systems mentioned above Heat sources for indirect heating Heat exchangers with steam or thermal oil