Evonik offers adsorbents to remove impurities from pyrolysis oil in chemical recycling

B910化工消息：July 2 - Evonik has introduced specialized adsorbent products designed to remove impurities from pyrolysis oil, a key intermediate in the chemical recycling of plastic waste. The development addresses one of the major technical challenges in pyrolysis-based chemical recycling, where the output oil typically contains various contaminants including halogens, nitrogen compounds, oxygenates, and metals that must be removed before the oil can be used as feedstock in steam crackers or refined into chemical products. Pyrolysis oil purification is a critical bottleneck in scaling up chemical recycling of plastics, as the quality of the final recycled feedstock depends heavily on the effectiveness of contaminant removal. Evonik adsorbent solutions are designed to target specific impurity classes, offering tailored purification for different pyrolysis oil compositions depending on the plastic waste input stream. The technology supports the growing chemical recycling industry by enabling higher quality recycled feedstock output, which is essential for achieving regulatory approval and market acceptance of chemically recycled plastics. Chemical recycling of plastics via pyrolysis is gaining momentum as a complementary pathway to mechanical recycling, particularly for mixed and contaminated plastic waste streams that cannot be effectively processed through mechanical methods. However, the economic viability of pyrolysis-based recycling depends significantly on the ability to produce feedstock-quality pyrolysis oil that can be processed in existing petrochemical infrastructure without requiring major modifications. Evonik entry into this market segment reflects the broader trend of specialty chemical companies developing enabling technologies and materials for the circular economy value chain. The company is leveraging its expertise in adsorbent and catalyst technologies, which have been widely used in petrochemical refining and processing for decades, to address emerging purification needs in the recycling sector. （来源：Process Worldwide）