Mixed plastic input is cut into 10-12 mm and enters an extruder where it is melted at 200-250°C and oxygen is eliminated. The melt continues to be heated up by the superheater at 350-400°C, producing oil vapor. Subsequently, the turbulent flow medium enters the heated tubular reactor (550-600°C). The blades built into the reactor anneal the partially hot melt film in 1-2 mm form. As the melt meets the heat transfer surface of the inner tube wall in the form of hot 1-2 mm film, it is vaporised immediately (flash pyrolysis). After the thermochemical processing, the produced gas vapor will be subjected to condensation, separation and post-treatment processes.
The technology can potentially process mixed plastic waste including polyethylene terephthalate (PET), polyethylene (PE), polyvinyl chloride (PVC), polypropylene (PP), polylactic acid (PLA), polycarbonate (PC), acrylic (PMMA) and acrylonitrile butadiene styrene (ABS). For 1000 kg of mixed plastic input, the process produces 760-810 kg crude oil (38-40 MJ/kg), 150-160 kg of gas (this goes into operation, 42-44 MJ/kg) and 50-55 kg of coke (16-18 MJ/kg), depending on raw material mix.
Currently, the focus is mainly on waste plastic from the automotive industry and other vehicles. The technology owner is keen to seek potential partner to trial their technology in processing mix plastic from municipal sources. A preferred collaboration mode would be to setup a pilot plant for the trial using plastic waste generated in the Asia region.
The targeted markets for this technology are
The system produces renewable end products using non-degradable wastes that cannot be recovered in other ways. The system can handle highly contaminated packaging materials, aroma-proof packaging plastic waste, painted metal oil steamed plastic waste, etc. Contaminants or acid gas such as chlorine (from PVC) that enters via the inputs or gets into the oil or coke fraction decomposes from NaOH to NaCl and H2O through a neutralization system. No other pollutant gas leaves the system and the unit has no chimney.