ANDRITZ Vandenbroek rotary drum dryer
The rotary drum dryer is suitable for drying woody biomass, agricultural products, and municipal solid waste (MSW). For the production of alternative fuels as well as in the area of waste-to-energy, ANDRITZ Vandenbroek rotary drum dryers are applied to decrease the moisture of the material to the desired level fo downstream process steps.

Strengths/benefits/features
High thermal efficiency
Special MPS rotary drum (multi-pass-system)
Controlled outlet moisture content due to specific drum internal design
Flexible drying time for light and heavy material
Extensive experience

Applications


Biomass, organic waste, agricultural products, 
municipal solid waste (MSW), 
refuse derived fuel (RDF)


General information
Since 1948 more than 500 dryers have been installed with the MPS (multi-pass-system) system. Traditionally the focus was on the agricultural area (as an example alfalfa (lucerne) is used as horse feed), but has been changed more to the alternative fuel area now.

Alternative fuel
In the alternative fuel market biomass (wood residue) is dried for the production of white pellets, brown pellets or black pellets. In each of these processes drum dryers can decrease the moisture to the desired level for downstream process steps. ANDRITZ Vandenbroek rotary drum dryers are available for evaporation capacities from 3-35 tons water per hour.

Waste-to-energy
Waste is considered as valuable raw material for the production of energy. Municipal Solid Waste (MSW) can be divided in the organic fraction (wood waste, wood trimming, etc.) and Refused Derived Fuel (RDF, i.e. plastics, paper, etc.). This RDF fraction (normally moisture content of 35-40%) can be enhanced to Solid Recovered Fuel (SRF) by reducing the moisture content in the drum dryer.