Method and device for the decontamination of plastic flakes
AssigneeKrones AG
InventorsThomas Friedlaender, Thomas Rieckmann, Frank Marx
Life of this patent
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Abstract
A method for preparing contaminated plastics ground into flakes, such as RPET or such polymers, having at least decontamination and SSP treatment steps, with at least one reactor, with heating to the process temperature taking place essentially outside the reactor. Also, a device for carrying out the method, and having at least one decontamination reactor and at least one SSP reactor, a device for heating plastic flakes to the process temperature being arranged upstream of the decontamination reactor. Also an SSP reactor having at least two individual reactors, and preferably between 3 and 7 individual reactors.
Claims28
A method for preparing plastics that are contaminated and ground into crystalline flakes, the method comprising at least a decontamination step and a SSP treatment step performed on the crystalline flakes, each step taking place in at least one reactor and the SSP treatment step being adiabatic, wherein the decontamination of the crystalline flakes is carried out in at least one decontamination reactor after the crystalline flakes are introduced into the at least one decontamination reactor and the SSP treatment of the crystalline flakes is carried out in at least one SSP reactor, wherein a SSP process temperature of the crystalline flakes in the SSP reactor is higher than or equal to the decontamination reactor.
Dependencies are inferred from the claim text.