Abstract: This invention relates to a method for sulfiding hydrocarbon conversion catalysts, e.g., hydrotreating catalysts comprising at least one metal sulfide and passivating said sulfided catalyst. The catalysts which may be treated by the method of the present invention comprise an alumina or an silica-alumina support e.g., a zeolite, and at least one Group VI metal sulfide and/or at least one Group VIII metal sulfide. In particular, the present invention provides a process for continuously activating a fresh or regenerated catalyst comprising at least one Group VI or Group VIII metal oxide supported on a particulate refractory oxide support material by converting substantially all of said Group VI or Group VIII metal oxide to the corresponding metal sulfide and passivating the resulting activated catalyst.

Abstract: The present invention is directed to a cascade catalytic hydrotreating/dewaxing process, wherein a hydrocarbon feedstock containing waxy components is treated. The hydrotreating phase precedes the dewaxing phase in order to remove contaminants, such as nitrogen and sulfur, from the feedstock to prolong the life of the catalyst used in the subsequent dewaxing step. A conventional hydrotreating catalyst is used. The dewaxing catalyst is a Zeolite Beta catalyst. The cascade process is conducted with or without interstage gas separation. The treatment occurs in the same or in separate reactors. The ratio of hydrotreating catalyst to dewaxing catalyst is greater than 1:2. This sequence of treatments enhances distillate yields and lowers processing and capital costs.

Abstract: There is provided a method and catalyst for removing catalyst-poisoning impurities or contaminants such as arsenic, iron and nickel from hydrocarbonaceous fluids, particularly shale oil and fractions thereof. More particularly there is provided a method of removal of such impurities by contacting the fluids with a copper-Group VIA metal-alumina catalyst. For example, a copper-molybdenum-alumina catalyst may be used as a guard bed material in a step preceding most refining operations, such as desulfurization, denitrogenation, catalytic hydrogenation, etc.

Abstract: There is provided a method and catalyst for removing catalyst-poisoning impurities or contaminants such as arsenic, iron and nickel from hydrocarbonaceous fluids, particularly shale oil and fractions thereof. More particularly there is provided a method of removal of such impurities by contacting the fluids with a copper-Group VIA metal-alumina catalyst. For example, a copper-molybdenum-alumina catalyst may be used as a guard bed material in a step preceding most refining operations, such as desulfurization, denitrogenation, catalytic hydrogenation, etc.

Abstract: A hydrocarbonaceous feedstock upgrading process is disclosed. Spent nickel arsenide-containing catalyst from demetallation guard chambers or hydroprocessing operations are utilized to upgrade the hydrocarbonaceous feedstock prior to dearsenation. The spent catalysts have significant activity for diolefin saturation and CCR removal at temperatures low enough to reduce olefin polymerization reactions.