The study of the best experimental conditions and catalyst for the hydrogenation (HYD) of light cycle oil (LCO) for upgrading purposes was carried out. The objective was to examine the ability of two commercial hydrotreatment (HDT) catalysts for selective aromatic saturation. The effect of the hydrotreatment operation parameters (temperature, pressure, liquid hourly space velocity, H 2 /HC ratio) on the sulfur and nitrogen contents and in the saturation of aromatic hydrocarbons was also investigated. The goal was to obtain the highest conversion to mono-aromatic hydrocarbons from this di-aromatic (naphthalene derivatives) type feedstock, and at the same time to get reasonable hydrodesulfurization (HDS) and hydrodenitrogenation (HDN) performance to avoid contaminant hydrocarbons for the next step (usually hydrocracking, HCK). An appropriate hydrotreated product with the highest concentration of mono-aromatic derivatives, a minimum reduction on the total aromatic content, and suitable decrements of sulfur and nitrogen compounds, was achieved using a cobalt-molybdenum supported on alumina catalyst, at 330 °C, 5.5 MPa, and a liquid hourly space velocity of 1.1 h −1 . Additionally, the kinetics of the HDA was studied, assuming a lump characterization into tri-, di- and mono-aromatic and aliphatic hydrocarbons, pseudo-first-order reaction rates between these conversions, and thermal losses and diffusional resistances to be undetectable.

中文翻译：

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用于 BTX 和汽油生产的轻循环油的选择性加氢

对轻质循环油（LCO）加氢（HYD）提质的最佳实验条件和催化剂进行了研究。目的是检查两种商业加氢处理 (HDT) 催化剂对选择性芳烃饱和的能力。还研究了加氢处理操作参数（温度、压力、液时空速、H 2 /HC 比）对硫和氮含量以及芳烃饱和度的影响。目标是从这种二芳烃（萘衍生物）类型的原料中获得最高的单芳烃转化率，同时获得合理的加氢脱硫 (HDS) 和加氢脱氮 (HDN) 性能，以避免污染烃用于下一个步骤（通常是加氢裂化，HCK）。使用负载在氧化铝催化剂上的钴-钼，在 330 °C、5.5 MPa，液体时空速为1.1 h -1 。此外，研究了 HDA 的动力学，假设团块表征为三、二和单芳烃和脂肪烃，这些转化之间的伪一级反应速率，以及热损失和扩散阻力是不可检测的。使用负载在氧化铝催化剂上的钴-钼在 330 °C、5.5 MPa 和 1.1 h -1 的液时空速下实现。此外，研究了 HDA 的动力学，假设团块表征为三、二和单芳烃和脂肪烃，这些转化之间的伪一级反应速率，以及热损失和扩散阻力是不可检测的。使用负载在氧化铝催化剂上的钴-钼在 330 °C、5.5 MPa 和 1.1 h -1 的液时空速下实现。此外，研究了 HDA 的动力学，假设团块表征为三、二和单芳烃和脂肪烃，这些转化之间的伪一级反应速率，以及热损失和扩散阻力是不可检测的。