Recycling of plastic waste using flash pyrolysis – Effect of mixture composition

Recovery of plastic waste is becoming crucial since the amount such increases continuously. The objective this study to investigate potential pyrolysis technique for recovery waste. In that frame, influence temperature (550°C or 600°C) on pure polypropylene (PP), polyethylene (PE), polystyrene (PS) and terephthalate (PET) was first studied. It shown whatever type polymer, aromatic compounds are mainly formed could reach 55wt.-% oil fraction PP 31wt.-% PE at 550°C. a second step, PP/PE mixture model representative packaging stream were pyrolyzed combination polymers proportions composition different fractions. polymer mixtures shows that, even if similar those obtained virgin polymers, proportion much more important than when alone. Indeed, mixing with 50/50 ratio does not affect liquid, gas solid fractions but leads formation higher quantity xylene (39 wt-%) plastics in has also led decrease waxy compounds. Furthermore, it aromatics expected formed. As conclusion, demonstrates an effective recover as petroleum industry. specific conditions used (proposed conditions), will favor idea sorting needed through favored composed polymers.