Due to their low recycling rates and harmful disposal methods, the environmental challenge posed by plastics drives the need for sustainable solutions. Pyrolysis is identified as a promising method for chemical recycling, capable of breaking down plastic waste into smaller molecules that can be further processed into fuels and chemicals. However, pyrolysis oils are often contaminated with chlorine-containing compounds, which can lead to corrosion, catalyst deactivation, and lower-quality products in subsequent refining processes. Hydrodechlorination process appears to be the best and the most efficient way for upgrading plastic pyrolysis oil (PyOil), allowing the deep removal of chlorine. Hence, PyOil becomes an interesting feedstock for the petrochemical industry, facilitating the integration of plastic into an open-loop recycling system.