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Polyolefin Recycling

Poison study of polyolefin catalysts based on chemical recycled plastic wastes

   The aim of the Polyolefin Recycling project is the functional recycling of plastic wastes through mechanical or chemical recycling, respectively. The basis of the recycling procedure is the ReOil process. In this process, a mixture of plastic wastes is fed into a heated plasticizing screw, which melts and homogenizes the plastic. A solvent is added to the mixture to increase thermal conductivity and decrease viscosity. Subsequently, the polymer depolymerizes and cracks to form a synthetic crude oil which can be compared to a light - middle distillate of a standard refinery.
   Since the synthetic crude oil can be used to produce olefins again, the project aims for a better understanding for present impurities. Therefore, a poison study is performed which researched the impact of poisons on the activity of olefin catalysts. By using a small scale 0.5 batch reactor system, lots of different experiments with alternating process conditions can be performed in a very short time. In the end, the feasibility and profitability of recycling post-consumer plastic wastes should be improved.

This project is funded by the FFG.

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