Coolbrook Achieves Breakthrough in Circular Materials: Large-Scale Pilot Successfully Cracks Plastic Waste Pyrolysis Oil

Helsinki, Finland , September 15, 2025

Coolbrook, a transformational technology and engineering company, has achieved a major breakthrough in circular plastics and materials by successfully cracking 100% plastic-waste-derived pyrolysis oil (py-oil) at its large-scale pilot facility using the RotoDynamic Reactor™ (RDR) technology.

As the first company globally, Coolbrook has demonstrated that 100% pyrolysis oil from plastic waste can be cracked directly in the RotoDynamic Reactor (RDR), while still delivering high yields of ethylene and propylene and maintaining stable operations. This achievement underscores the robustness and unique capabilities of Coolbrook’s electrified cracking technology in processing alternative, circular feedstocks.

Pyrolysis oil derived from waste is an essential building block in closing the loop for plastics recycling. By proving that the RDR can handle this challenging feedstock effectively, Coolbrook is paving the way for sustainable olefin production from end-of-life plastics.

This breakthrough builds on Coolbrook’s earlier pilot plant success at Brightlands in the Netherlands, where we demonstrated the ability to heat a range of gases, including air, steam, nitrogen, and methane to over 1000 °C using renewable electricity. Coolbrook has also successfully cracked naphtha at the pilot plant, achieving significantly increased yields compared to traditional furnaces and further proving the versatility of its technology. With the new py-oil cracking results, Coolbrook has demonstrated that its electrified turbomachinery-based process can be extended to the cracking of real-world circular feedstocks.

Dr. Tuomas Ouni, Head of Process Development, said, “Cracking 100% pyrolysis oil directly without the need for dilution with conventional fossil feedstock simplifies operations and enhances traceability of circular materials. Using Coolbrook’s RDR also delivers benefits in terms of ethylene and propylene yields compared to conventional furnaces, without any noticeable increase in coking. These results confirm the potential of Coolbrook’s RDR to play a central role in both decarbonisation and circularity in the petrochemical industry.” 

The tests were conducted as part of the eLECTRO project, funded under the EU Horizon Europe programme, which aims to develop an electrified pathway for converting mixed plastic waste into light olefins. It combines advanced waste pre-treatment, electrified pyrolysis, and electrified cracking via Coolbrook’s RDR. The project aims to demonstrate sustainable, circular, and scalable solutions for the future of plastics and petrochemicals.

About Coolbrook

Hailed as the key technology for industrial decarbonization globally, Coolbrook is a transformational technology and engineering company on a mission to decarbonize major industrial sectors like petrochemicals and chemicals, iron and steel, and cement. Coolbrook’s revolutionary rotating technology combines space science, turbomachinery and chemical engineering to replace the burning of fossil fuels across all major industrial sectors. The technology has two main applications: RotoDynamic Reactor™ (RDR™) to reach 100% CO₂ free olefin production, and RotoDynamic Heater™ (RDH™) to provide carbon-free process heating to iron and steel, cement and chemicals production. Once implemented at scale, the RotoDynamic Technology has the potential to reach temperatures of 1700°C and cut 2.4 billion tons (30%) of annual CO₂ emissions in heavy industry. 

For more information, please visit www.coolbrook.com.

About eLECTRO project

Less than 10 % of plastic is recycled. The rest ends up in landfills or is incinerated. In this context, the EU-funded eLECTRO project (GA number 101058412) will demonstrate new technology that connects the waste and petrochemical industries to provide a sustainable and scalable circular solution with a low carbon footprint for olefin and polyolefin production.

eLECTRO will prioritise plastic waste streams by combining an innovative modular extruder for the optimal pre-treatment of plastic waste with an electrically heated reactor for the pyrolysis of plastic waste. The main product, plastic waste pyrolysis oil, will be utilised as a feedstock for steam crackers. The project will test the technology using waste streams from the Republic of Korea and Indonesia.

For more information, please visit https://electro-project.eu/