Pyrolysis is a sustainable, clean, and innovative technology to obtain high added value products. A conical spouted bed composed of binary mixtures can be used as a promising reactor for the pyrolysis of solids due to its high heat transfer rate. For the start-up of the plant, low levels of axial particle segregation in the bed are needed. As an innovative aspect, this research proposes to use a statistical method to investigate particle concentration uniformity along the conical bed. Results reveal conical spouted beds presents uniform axial composite concentration when dealing with sand and polyethylene/aluminum composite mixtures. The axial uniformity of composite in the bed enables the reactor application in the thermal recycling of carton packaging waste using a sustainable waste route. The experimental design shows both polyethylene/aluminum composite concentration and particle diameter ratio of sand and composite affect axial particle segregation in the bed. Model equations have a good adjustment to the experimental data and predict results with an error of <10%.

热解是一种可持续、清洁和创新的技术，可用于获得高附加值产品。由二元混合物组成的锥形喷射床由于其高传热速率可用作固体热解的有前途的反应器。对于工厂的启动，床层中需要低水平的轴向颗粒分离。作为一个创新的方面，本研究建议使用统计方法来研究沿锥形床的颗粒浓度均匀性。结果表明，在处理沙子和聚乙烯/铝复合混合物时，锥形喷射床呈现出均匀的轴向复合浓度。床中复合材料的轴向均匀性使反应器能够使用可持续的废物途径在纸盒包装废物的热回收中应用。实验设计表明，聚乙烯/铝复合物的浓度和砂子和复合物的粒径比都会影响床层中的轴向颗粒偏析。模型方程对实验数据有很好的调整，预测结果误差<10%。