Selective Dissolution
and precipitation
Detailed process
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1
Pre-treatment
Plastic waste is first checked and crushed
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2
Dissolution
A closed-loop solvent is used to selectively dissolve the constituents of the composite
-
3
Filtration and settling
Insoluble are separated by primary filtration and contamination by secondary filtration
-
4
PVC precipitation
The liquid PVC is now precipitating
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5
Drying
The wet PVC is dried into a ready-to-use compound
Closed circuit
A multi-stage recovery process is used to regenerate the solvent:
Evaporation - Condensation - Separation of the aqueous phase.
Given the process temperatures (around 100°C), the solvent does not degrade.
