Abstract: The present invention addresses to obtaining a support of hydrorefining catalysts by an innovative preparation route that reduces the problem of loss (or leaching) of boron over the operating time of industrial units. As the presence of boron in catalysts contributes to increased activity (hydrogenating and acidic) and stability for the hydrorefining reactions (hydrotreating and hydrocracking), its maintenance in the catalyst guarantees the preservation of the properties in operation, throughout the entire cycle of campaign of industrial units.

Abstract: The present invention addresses to a process for the production of alkyl-naphthenics for use as diesel and/or aviation kerosene (JET A-1), whose process involves the alkylation of olefins with monoaromatics and subsequent hydrogenation to alkyl-naphthenics. The process and catalysts of the present invention allow the regeneration of the acidic catalyst with a hydrogenating function and full recovery of its activity with hydrogen hot stripping. The catalyst is used for the formation of intermediate alkyl-aromatics and can also be used in the subsequent hydrogenation to alkyl-naphthenics.

Abstract: 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, thus allowing 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.

Abstract: 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, thus allowing 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.