Presentation Profile
Extending Insights to High-Boiling Fractions by Correlating CHNSO Composition with Oxygenates in Low-Boiling WPPOs
Currently Scheduled: 10/14/2025 - 9:30 AM - 9:55 AM
Room: Hibiscus
Main Author
Amey Gonzalez - Lummus Technology
Abstract:
Accurate oxygen characterization is critical for evaluating waste plastic pyrolysis oils (WPPOs). Oxygen can enter from PET and other oxygenated plastic feedstock, residual water, secondary reactions during pyrolysis, or non-plastic residues like cardboard and food waste. Oxygen-bearing compounds in WPPOs influence acidity, corrosion, instability, and catalyst deactivation, which limit the direct integration into refining and petrochemical operations. A variety of methods exist for characterizing oxygen, but none provide a complete oxygen profile. CHNSO analysis is one of the most practical techniques: it is fast, applies across the full boiling range, and can measure higher-boiling fractions that other methods cannot but often leaves a portion unaccounted for. ASTM D7423, by contrast, provides molecular-level speciation, but is limited to fractions boiling below 200 °C. In this work, we compare CHNSO and ASTM D7423 and extend insights to high-boiling fractions by correlating bulk CHNSO composition with oxygenate content in low-boiling oils.
