D6.5 Low temperature pyrolysis treatment(s) of collected ML

It is crucial to develop technologies that can be used to collect and recycle marine litter. This is the overall focus of the project MAELSTROM. The role of MAKEEN Energy(ME) in the project was to perform low-temperature pyrolysis on the leftover plastics received from GEES, and the aim was to produce a marine diesel phase with anaphtha phase and black solid as secondary products. The produced marine diesel phase was compared with the ISO 8217-DMA standard to evaluate the quality.Furthermore, both the obtained liquids and the black solid fraction were assessed regarding uses to obtain circularity. The marine litter received came unsorted and unwashed. At ME it was roughly sorted leaving out materials known NOT to give the required quality of ISO 8217-DMA oil and/or low yield and there of no interest for an energy consuming process. Most of the waste stream applicable for pyrolysis was PE buoys and this material wasshredded and then analyzed with a NIR-scanner and then processed in MAKEENS large-scale continuous operating test plant. This results in four product streams fromthe pyrolysis process being MGO and naphtha (which are both liquid) syngas, and a residue of black solid powder. The produced MGO was analyzed for evaluation against ISO 8217-DMA as requested in the MAELSTROM agreement and all obtained liquids, the black solid fraction, andthe gas was assessed regarding uses to obtain circularity. Also, a subcontractor, SINTOL, performed tests on material supplied by GEES and their results are included in the report as well. The processing was performed in a small-scale setup and as batch-processing. The material submitted to SINTOL was shredded and divided into 3 fractions,consisting of multilayer packaging, Styrofoam and Shredded/pulverized epoxy resin. Since the material delivered by GEES was not sufficient, material sourced locally suchas PET bottles was added to check the effect of this type of polymer on the process. The reason for this focus relies on the behavior of PET under thermal decomposition. The material was processed through pyrolysis, distillation, and polishing and the output liquid was assessed. Mass balance was calculated and assessed after pyrolysis, distillation, and polishing.