The upgrading of polystyrene (PS) together with vacuum gasoil (VGO) by means of hydrocracking has been investigated. The aim of the work has consisted on explaining, based on the hydrocracking mechanism, the effects of the co-feeding and of the operating conditions on products distribution and catalyst deactivation. For this purpose hydrocracking tests have been carried out in a batch reactor for a PS/VGO blend (10/90 in mass) under the following conditions: 380–420 °C; 80 bar; contact time, 30–300 min; and C/O ratio, 0.1 g_catalyst g_oil⁻¹. The liquid products have been extensively characterized by chromatographic means, exposing that the naphtha and LCO (light cycle oil) fractions produced at 400 and 420 °C are suitable to be used in the blending of automotive fuels. Finally, coke fraction has been characterized by different techniques exposing that at low temperature the PS has a strong influence on catalyst deactivation, whereas at high temperature its effects are not so notably. Thus, the results expose that by co-feeding PS to a hydrocracking unit, it can effectively be converted it into streams of interest for refinery without causing any operational issue.

聚苯乙烯 (PS) 与减压瓦斯油 (VGO) 一起通过加氢裂化的升级已进行了研究。这项工作的目的是基于加氢裂化机理解释共同进料和操作条件对产物分布和催化剂失活的影响。为此，在以下条件下，在间歇式反应器中对 PS/VGO 混合物（质量为 10/90）进行了加氢裂化试验： 380–420 °C；80 巴；接触时间，30-300 分钟；和 C/O 比，0.1 g_催化剂g_油^-1. 液体产品已通过色谱方法广泛表征，表明在 400 和 420 °C 下生产的石脑油和 LCO（轻循环油）馏分适用于混合汽车燃料。最后，焦炭馏分已通过不同的技术表征，表明在低温下 PS 对催化剂失活有很强的影响，而在高温下其影响不那么显着。因此，结果表明，通过将 PS 共同进料到加氢裂化装置，可以有效地将其转化为炼油厂感兴趣的物流，而不会导致任何操作问题。