Mixed Plastic Waste Depolymerisation


Energy - Waste-to-Energy
Waste Management & Recycling - Waste-to-Energy
Show more >


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. 



  • Able to handle thermosetting and hazardous plastic material including PVC (<6-7% wt in mixture), PP, PC, PMMA, ABS. 
  • The flash pyrolysis process line is equipped with off-gas post-treatment and operates without noise or noxious oil fumes emission.
  • The crude oil product requires refinement process depending on the desired quality.
  • Patented technology and ISO (TÜV RHEINLAND) and CE certified.
  • A TK250 pilot plant can process the annual municipal waste for a population of approximately 10,000 people.
  • TK250 can convert 250-300 kg/h (2,000-2,200 tonnes/yr) of mixed plastic in a closed system.
  • The technology is modular, mobile and needs a gross space of 200m2. The engine tests carried out have proved that without purification of the crude oil, the CUMMINS test engine gave better or equivalent emission values to gasoline.
  • The electricity consumption of the pilot plant is 180-200kW and it can be produced with gas or gasoline generator in island operation. 
  • The construction of the TK250 pilot plant will require EUR 2.2-2.4M without the refinery unit and gas recovery unit.
  • The annual maintenance cost of the technology is below 6% of its investment value
  • If the raw material is continuously available and logistically supported, it is possible to design larger equipment at a later stage. However, the aim is to develop a technology with lower performance and make it scalable depending on the raw material supply.


  • Automotive plastic waste
  • Municipal plastic waste
  • Industrial plastic waste

Market Trends & Opportunities

The targeted markets for this technology are

  • South East Asia
  • China


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. 

Low-Cost Adsorbents From Spent Coffee Grounds For Industrial Wastewater Treatment
Operational Intelligence Platform For Optimization of Water Treatment
Process for the Delamination of Multilayer Plastic Film
Energy Harvesting from Low-grade Heat Driven Engine to Pump Liquids
Lixiviant for High Extraction of Silver from Silver-Coated Solid Wastes
Battery Management System to Refurbish Lithium-ion Batteries
Multi-functional Chemical Composite Recycled from Waste Ash
Waste-To-Energy Solution Turns Biomass and Waste into Electricity Through Gasification
Process for Rejuvenation of Spent Lithium-ion Battery Cathodes
Recycling Plastics into Fuels and Chemicals Using Sunlight