Influence of gasification reactor temperature on the performance of plastic waste pyrolysis

The energy recovery of plastic waste provides a sustainable solution to the growing accumulation of these materials in the environment. In this study, a pyrolysis?gasification model was developed using Aspen Plus to investigate the effect of gasification reactor temperature on the products generated from the thermal conversion of three waste types: polyethylene (PE), polyethylene terephthalate (PET), and used tires.The results show that increasing the temperature favors the formation of synthesis gas (H? and CO), while the production of liquids and methane (CH?) significantly decreases beyond 800 ?C. PE proves to be particularly efficient for hydrogen generation, whereas PET exhibits near-complete conversion to gas at elevated temperatures. Although ammonia (NH?) production remains limited, it is affected by the nitrogen content of the feedstock?especially in tires?and by the presence of inert nitrogen (N?), which may interact under extreme conditions.These findings can assist industrial operators in optimizing gasification conditions for syngas production, thereby contributing to waste-to-energy development and circular economy strategies.