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Picture 35.: The condensate treatment in Rennerod plant in Germany
(Wastesum projectDel 3A., 2010)
The different materials are sorted out during the downstream process steps.
Several process steps to separate the materials into their combustible <strong>and</strong>
noncombustible materials are followed. The efficiency of these separation steps
<strong>and</strong> the sorted quality of the different separated fractions depends from the dry
state of the material. The materials are separated into:
‣ Solid Recovered Fuel (Stabilat)
‣ Mixed plastics fraction (as an option)
‣ Usable materials (Ferrous <strong>and</strong> non-Ferrous metals, inert
substances/ glass)
‣ Contaminants (e.g. batteries)
The multiple stages, dry density sorting used initially separates the output from
the composting boxes into the heavy <strong>and</strong> light fraction material flows. The dry,
lightweight material virtually consists of 100% combustible constituents (such
as wood, paper, plastics, textiles <strong>and</strong> organic materials). The calorific value of
the Stabilat lies within the range of 15–18 MJ/kg <strong>and</strong> therefore represents an
energy equivalent to processed <strong>and</strong> dried lignite coal. Due to its dry
consistency, it can be easily stored <strong>and</strong> therefore used as a secondary fuel in