Analysis and control of products obtained from pyrolysis of polypropylene using a reflux semi-batch reactor and GC-MS/FID and FT-ICR MS

Pyrolysis of plastic waste allows to produce liquid fractions, but their molecular weight distributions are typically very large whereas it would be interesting focus on light hydrocarbons. In this study, the pyrolysis polypropylene (PP) was investigated using a semi-batch, vertical glass reactor heated at 480 °C equipped with reflux condenser. The performed and without temperature top condenser ranged from 125 200 depending heating power wall permanent gas yield (C1 C4) between 20.9 wt% 25.8 when used. contained mainly hydrocarbons carbon range C1 C4 H2 in smaller extent. Their kinetic profiles followed similar trend, i.e they exhibited maximum time. GC-MS/FID detected olefinic (olefins) less than 28 carbons. major obtained were heavy naphtha cuts (C5-C7) 13.1 16.7 (C8-C12) 69.1 87.2 total mass fraction detected. experiments demonstrated that presence has significant impact yields. It narrow distribution liquid, which confirmed by FT-ICR MS. As consequence, molecules interest maximised, especially those corresponding cuts.