KREYENBORG has developed sustained, high-level expertise in plastics recycling, with solutions for decontamination of PCR-PET, crystallization, drying, and heating of bulk materials, using infrared technology.
Further development of this technology has brought to the fore its newest member among its products, the IR-FRESH® - a modular system for the safe and efficient reduction of unpleasant odours in plastics.
In the first process step, an infrared module installed above the material bed heats the material quickly and directly to the optimum temperature level for the plastic in question. In this process, the continuous rotation of the drum ensures a homogeneous mass flow with a defined dwell time (applying the first-in/first-out principle). By means of the rotating and mixing elements integrated in the spirals, the material is continuously mixed in the drum with constant surface exchange. Combined with controlled heating, this ensures considerable odour elimination, even within a very short residence time.
In the second process step, the remaining odorous substances in the regrind or granules are removed by a thermal-physical cleaning process in the IR-FRESH® CONDITIONER. This IRFRESH® CONDITIONER - an insulated hopper - keeps the material to be decontaminated within a temperature range that’s ideal for the decontamination process by means of a hot purge-gas. Excellent results for deodorization and decontamination can be achieved through the interaction of the main process parameters of airflow, temperature, and residence time.