UNTHA optimises WtE production and metal recycling at Turkish paper mill

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Courtesy of UNTHA Shredding Technology

An UNTHA shredder is now fully operational in Turkey’s first solid waste incineration plant.

The single step XR3000C has transformed Modern Enerji’s approach to metal recycling, at the same time as boosting the production of Refuse Derived Fuel (RDF).

The XR installation came about when Modern Enerji – part of Eren Holdings – sought a more effective technique for shredding its high calorific material stream.

The team had been processing pulper ropes from the neighbouring paper mill, operated by sister-company and Turkey’s largest corrugated fibreboard producer, Modern Karton. When handled effectively, pulper rope waste provides a perfect RDF feedstock. However, this notoriously complex bi-product of paper manufacturing is not easy to shred, and insufficient technology was holding Modern Enerji back.

The XR3000C – a single-step RDF shredder – has therefore replaced two dual-shaft machines that had previously struggled to separate metals from the multifarious blend of plastics and paper.

With a three metre cutting chamber and two knife rows, the XR can now handle six tonnes of pulper ropes and 10 tonnes of pre-shredder paper reject per hour. The result, in one sophisticated operation, is the newfound production of a high quality, 50mm RDF for Modern Enerji’s own power generation, and the segregation and extraction of saleable metals for recycling. 

Commenting on the project, UNTHA’s waste to energy specialist Andreas Neureiter said: “Modern Enerji is one of Turkey’s most renowned brands when it comes to sustainable thinking and environmentally progressive electricity generation. It’s therefore no surprise that, at the same time as producing power for the country, the team is constantly evaluating how to improve the efficiency of their waste handling, recycling and alternative fuel production.

“They first approached us for a secondary shredder that could help clean the metal out of their processed pulper ropes. But our response was, why run two or more machines, when you can achieve your desired output in a single step? We invited them to trial our technology in Austria, using an equivalent material stream, and the results proved our concept.”

Commissioned in late spring, the XR has now been operational in this northwestern city of Corlu for four months, and is projected to handle 45,000 tonnes of waste per year.

Overview of all UNTHA-RDF shredders

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