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ALTERRA - Proven and robust liquefaction technology for hard-to-recycle plastics

Chemical recycling through thermochemical liquefaction and intermediate refining can turn discarded plastics into valuable, high-quality raw materials for new polymers and chemicals. Alterra is a commercially proven and reliable liquefaction technology designed to process heterogenous, hard-to-recycle plastics, and demonstrated at scale for an industry-leading length of time.

Process solution

Alterra’s rotary kiln thermal decomposition reactor is operated at elevated temperatures and oxygen-free conditions. Its advanced design ensures precise thermal control, avoids hot spots and limits fouling. This enables stable, continuous performance even when processing complex and mixed waste plastic streams. 

Alterra process efficiently breaks down the long hydrocarbon chains in plastics into short hydrocarbons, which are then condensed into a circular oil for use in oil refining or petrochemical processes. The technology is commercially proven in a continuously operated reference plant by Alterra in Akron, Ohio, USA. This demonstrates its technical robustness as well as its long term reliability in industrial conditions.

Standard, modular solution for easy deployment

Alterra technology is offered as a standardized, repeatable product developed by Neste in partnership with Alterra and Technip Energies, and supplied to the customer as Engineering, Procurement, Fabrication (EPF) delivery. Standard product deployment accelerates time-to-revenue, improves business case accuracy and minimizes project development cost. 

What are the benefits of Alterra technology?

Read more about numerous benefits of Alterra