par Breyer, Sacha ;Haut, Benoît
Référence World Congress of Chemical Engineering (9: 19 - 23/08/3013: Seoul)
Publication Non publié, 2013-08-22
Poster de conférence
Résumé : Many landfill sites can be considered as a potential source of energy and material, that represents the concept of landfill mining. This concept can bring an answer to the growing lack of numerous raw materials but also to the ever higher demand in energy. More precisely, the subject of this study is to valorize waste plastics, knowing that most of them possess a high heating value (HDPE, LDPE, PVC, PS, PP, PET), for a heavy fuel’s production using the solvolysis within used lubrication oils. This alternative “low grade fuel” would be used in cement kilns, substituting traditional fuels. The use of oil in the process improves the heat transfers and helps the initiation and propagation reactions that occur during the thermal cracking of plastic materials. The aim of the study is to arrive at a better understanding of the influence on the process and the finished product of various parameters such as temperature, residence time, mass ratio plastic/oil, plastic type, oil type and the presence of impurities. To achieve this goal, we lead experiments of solvolysis in a 5 liters stirred batch reactor. For each type of plastics, we introduce 50% by mass of plastics (controlled and various sizes of particles) in the reactor where the oil has been heated at various determined temperatures. As a result, we measure the residence time that is needed to obtain a fuel with a specific viscosity. The next steps are to understand the influence of impurities in the process by leading experiments with used material (plastics and oils) and to increase the mass ratio plastics/oils.