Study on the role of the reaction time in the upcycling of HDPE by co-hydrocracking it with VGO

Pursuing the aim of improving current waste plastics management strategy, we have investigated co-hydrocracking high-density polyethylene (HDPE) with vacuum gasoil (VGO) over a PtPd/HY catalyst for converting this blend into high-quality fuels. In particular, work was focused on assessing effects reaction time product yields and composition gas, naphtha light cycle oil (LCO) fractions, which determined by chromatographic means. The experimental runs were carried out in 100 mL semi continuous stirred tank reactor varying between 15 120 min maintaining constant rest variables at 420 °C (temperature reached using an electrical heating jacket following 5 min−1 ramp), 80 bar to mass ratio 0.075 gcat goil−1. results shown that fraction rich 1-ring aromatics RON value 92.5 obtained, while LCO mainly iso-paraffinic cetane index 43.8. Hence, these fractions could be used corresponding blending stages commercial gasoline diesel. Furthermore, coke deposited analyzed means TPO, obtaining it formed short contact times (< min) its nature evolved being less condensed long times.