The study of a light cycle oil (LCO) upgrading alternative involving hydrotreating and hydrocracking/transalkylation procedures for obtaining a benzene, toluene and xylene (BTX) enriched fraction is presented. The research work was focused on the effect of the experimental conditions on the hydrocracking of an hydrotreated light cycle oil (HDT LCO) in order to produce the highest amounts of BTX, when the catalysts consisted of a mixture (50/50 in weight) of nickel–molybdenum on alumina (NiMo/Al₂O₃) and ZSM-5 materials (NiMo/ZSM-5 (50)). It was found that 7.4 MPa, up to 375 °C, LHSV of 1.2 h⁻¹ and a H₂/Oil value of 442 m³/m³ were the optimal experimental conditions for producing an enriched BTX fraction (31%). In order to facilitate the analysis, the study was carried out considering four types of hydrocarbons as lumps for the feed and HCK products: light hydrocarbons (LHC) composed by C4–C7 non-aromatic compounds, BTX, middle hydrocarbons (MHC) consisting of C7–C10 paraffins and isoparaffins, alkylbenzenes, tetralin and naphthalene derivatives and a small amount of high molecular weight hydrocarbons (HHC). Based on this description, HDT LCO used as feedstock for the hydrocracking (HCK) procedure, presents a 99% of a MHC fraction. The HCK conversion, BTX selectivity and yields were obtained from the chromatographic analysis of the products. A simple kinetic model considering only the MHC conversion was carried out. The obtained activation energy confirmed the endothermic nature of the HCK process. The activity decay of the catalytic mixture was also studied by varying the time on stream.

介绍了轻循环油 (LCO) 升级替代方案的研究，涉及加氢处理和加氢裂化/烷基转移程序，以获得富含苯、甲苯和二甲苯 (BTX) 的馏分。研究工作的重点是当催化剂由以下物质的混合物（重量 50/50）组成时，实验条件对加氢处理轻循环油 (HDT LCO) 的加氢裂化的影响，以生产最高量的 BTX。氧化铝上的镍钼 (NiMo/Al ₂ O ₃ ) 和 ZSM-5 材料 (NiMo/ZSM-5 (50))。结果发现，7.4 MPa、高达375 °C、1.2 h ^-1的LHSV 和442 m ³ /m ³的H ₂ /Oil 值是生产富集BTX 馏分（31%）的最佳实验条件。为了便于分析，研究中考虑了四种类型的碳氢化合物作为饲料和HCK产品的块状物质：由C4-C7非芳香族化合物组成的轻质碳氢化合物（LHC）、BTX、由C4-C7非芳香族化合物组成的中质碳氢化合物（MHC） C7-C10链烷烃和异链烷烃、烷基苯、四氢化萘和萘衍生物以及少量高分子量碳氢化合物（HHC）。基于此描述，用作加氢裂化 (HCK) 程序原料的 HDT LCO 含有 99% 的 MHC 馏分。通过产物的色谱分析获得HCK转化率、BTX选择性和收率。建立了一个仅考虑 MHC 转化的简单动力学模型。获得的活化能证实了 HCK 过程的吸热性质。还通过改变运行时间来研究催化混合物的活性衰减。