Post by Plastogaz SA

We continue to make steady progress in advancing catalytic plastic waste liquefaction. One key objective is to reduce the oxygen and nitrogen content in the product oil, as low O and N levels are important when targeting integration into steam crackers. Lower heteroatom content helps move the oil closer to the quality requirements expected for cracker-compatible feedstocks. The graph below shows the O and N content, expressed in ppmw, of different oils produced from the same feedstock. The experiments were carried out on our Pilot Unit over 72 h run-time. The initial plastic waste contained approximately: 30’000 ppmw O 2’000 ppmw N We observed a clear improvement in oil quality (see graph below). We observe approximately 80% oxygen removal and 58% nitrogen removal versus Pyoil, while maintaining >90% oil selectivity. The ruthenium catalyst remains the benchmark, but these results show that non-noble metal systems are moving in the right direction!