A step closer to large-scale polystyrene circularity

Sulzer Chemtech is strengthening its technology, offering for chemical polymer recycling by joining forces with VTT Technical Research Centre of Finland. The exclusive collaboration will support the commercialisation of comprehensive polystyrene (PS) recycling solutions at the core of circular economy strategies.

Sulzer Chemtech has signed a Memorandum of Understanding (MoU) with VTT to advance the development and popularisation of a fully integrated processing train that converts poorly recycled waste PS into high-purity styrene suitable to produce various grades of styrenic polymers. These will also include demanding food-related applications with stringent, low VOC (volatile organic compounds) requirements.

The system will rely on VTT’s patented pyrolysis-based depolymerisation solution and Sulzer Chemtech’s SuRe Styrene purification technology. PS manufacturers and recyclers will benefit in the near future from a complete setup to increase the range of feedstock material supported by their plants. This will ultimately enable them to improve their sustainability and product quality.

Sulzer Chemtech, which supports VTT in the development of its PS recycling technology, will act as the main licensor, providing full-process solutions to customers. These include basic engineering services, supply of key equipment and skid-mounted modular units.