Development of a Separation Sequence for the?Integration of a Styrene Recyclate into Polystyrene Production

The processing of a styrene recyclate stream and its reintegration into a polystyrene synthesis is accompanied by a significantly reduced energy input compared to conventional polystyrene synthesis. The chemical recycling of polystyrene waste thus shows great potential for use in circular plastics production. This work addresses the processing of a polystyrene recyclate stream into polystyrene synthesis on an industrial scale. Evaluating the energetic demand of the separation process with the following reintegration of the recyclate stream shows a significantly reduced specific energy input compared to conventional polystyrene synthesis. Therefore, recycling polystyrene by pyrolysis and thermal separation shows a considerable potential as a tool for industrial circular production in the plastics sector.

» Publication Date: 05/01/2023

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