Plastic Conference  /  November 09, 2020

Plastic Waste 2

Event note

This conference is all about turning waste plastic via pyrolysis /chemical recycling into new plastics competing with plastics made from virgin fossil oil. This requires that current recycling value chains change to a new sustainable ecosystem.

Chemical Recycling of Plastic Waste

Dr. Alexander Hofman from Fraunhofer UMSICHT Sulzbach-Rosenberg will participate in the conference with the following presentation title: »Chemical Recycling of Plastic Waste - Pyrolysis and downstream processing of pyrolysis oils«.

The recycling of many plastic waste streams like mixed plastics, composites or plastics with inorganic and organic contaminations remains very challenging. As an addition to mechanical recycling, chemical recycling offers the chance for closing the plastic recycling loop. Currently, great amounts of plastics are still incinerated and removed from this loop.

Chemical recycling has the potential to become an alternative to incineration. While many technologies are conceivable, thermochemical conversion is the most flexible towards mixing and contaminations. Moreover, due to the possibility of a decentral operation, pyrolysis is a very promising technology for chemical recycling. However, the challenge herby is the direct utilization of pyrolysis products, mainly oil, in chemical industry.

Residual halogen and cyanide containing compounds hampers downstream processing, as these kind of compounds deactivates catalysts. Therefore, Fraunhofer Umsicht investigates the development of a technology based on an in situ cracking of halogenated organic compounds via hydrogen rich materials, in order to overcome these issues. If the downstream processing of pyrolysis oil is enabled, a new value chain could be generated.