A synthetic mixture of real waste packaging plastics representative of the residue from a material recovery facility (plasmix) was submitted to thermal and catalytic pyrolysis. Preliminary thermogravimetry experiments coupled with Fourier transform infrared spectroscopy were performed to evaluate the effects of the catalysts on the polymers’ degradation temperatures and to determine the main compounds produced during pyrolysis. The thermal and catalytic experiments were conducted at 370°C, 450°C and 650°C using a bench scale reactor. The oil, gas, and char yields were analyzed and the compositions of the reaction products were compared. The primary aim of this study was to understand the effects of zeolitic hydrogen ultra stable zeolite Y (HUSY) and hydrogen zeolite socony mobil-5 (HZSM5) catalysts with high silica content on the pyrolysis process and the products’ quality. Thermogravimetry showed that HUSY significantly reduces the degradation temperature of all the polymers—particularly the polyolefines. HZSM5 had a significant effect on the degradation of polyethylene due to its smaller pore size. Mass balance showed that oil is always the main product of pyrolysis, regardless of the process conditions. However, all pyrolysis runs performed at 370°C were incomplete. The use of either zeolites resulted in a decrease in the heavy oil fraction and the prevention of wax formation. HUSY has the best performance in terms of the total monoaromatic yield (29 wt-% at 450°C), while HZSM5 promoted the production of gases (41 wt-% at 650°C). Plasmix is a potential input material for pyrolysis that is positively affected by the presence of the two tested zeolites. A more effective separation of polyethylene terephthalate during the selection process could lead to higher quality pyrolysis products.

代表来自材料回收设施（plasmix）的残留物的实际废包装塑料的合成混合物已进行热解和催化热解。进行了初步的热重分析实验和傅里叶变换红外光谱，以评估催化剂对聚合物降解温度的影响，并确定热解过程中产生的主要化合物。使用台式反应器在370℃，450℃和650℃下进行热和催化实验。分析了油，气和焦炭的收率，并比较了反应产物的组成。这项研究的主要目的是了解具有高二氧化硅含量的沸石氢超稳定沸石Y（HUSY）和氢沸石socony mobil-5（HZSM5）催化剂对热解过程和产品质量的影响。热重分析表明，HUSY显着降低了所有聚合物（尤其是聚烯烃）的降解温度。HZSM5由于其较小的孔径而对聚乙烯的降解具有重要影响。质量平衡表明，无论工艺条件如何，油始终是热解的主要产物。但是，所有在370°C下进行的热解运行均不完全。两种沸石的使用均导致重油馏分的减少并防止了蜡的形成。就总单芳烃收率而言，HUSY表现最佳（在450°C下为29 wt％），而HZSM5促进了气体的产生（在650°C时为41 wt％）。Plasmix是一种潜在的热解输入材料，受到两种测试沸石的影响。在选择过程中更有效地分离聚对苯二甲酸乙二醇酯可能会产生更高质量的热解产物。