Refining method for highly (poly)aromatic and nitrogenated charges

The present invention describes a method for refining highly polyaromatic and nitrogenated charges, such as LCO streams, comprising hydrotreating (HDT) as the first reaction stage, followed by the intermediate separation of gases generated in the HDT section, then by a second reaction stage consisting in moderate hydroconversion/hydrocracking and in a rectifying and/or fractionating section, thusallowing more flexible production of fuels. In the rectification mode, the claimed method yields a diesel oil fraction with higher cetane content, reduced density and volumetric yield increase of at least 111% relative to the process charge, thus minimising yield losses through naphtha overcracking and contributing to the optimisation of the required hydrogen consumption. In the fractionating mode, different cuts and their compositions can be produced, such as naphtha, kerosene and diesel. 本发明描述了一种精炼高度聚芳烃和氮化的加料例如LCO料流的方法，其包含作为第一反应阶段的加氢处理(HDT)，随后是该HDT区中所产生的气体的中间分离，然后是第二反应阶段，其组成为温和加氢转化/加氢裂化，并且处于精馏和/或分馏区中，因此允许更灵活地生产燃料。在精