Heavy oil hydrodesulfurization catalyst

With a high pore volume, suitable pore size, and acidity, heavy oil hydrodesulfurization catalyst is a very active desulfurization catalyst that also performs well at denitrification and removing carbon residue.

Heavy oil and other low-quality distillates can be hydrotreated using heavy oil hydrodesulfurization catalyst. It is loaded after the demetallization catalyst and it is primarily used to further purge the feed oil of metal and sulfur impurities. Likewise, thoroughly remove any remaining carbon and nitrogen.

The active components of  heavy oil hydrodesulfurization catalysts are generally transition metal elements such as Mo, Co, Ni, Pt and Pd, etc. and their compounds.These metal elements all have unfilled d electron orbitals.They have a body-centered or face-centered cubic or hexagonal lattice.Both in terms of electronic properties and geometric properties, it has the conditions to be an active component.Most of the preparation process of hydrodesulfurization catalyst is to directly impregnate the metal component on the gamma-Al2O3 carrier, then dry and calcine to obtain the oxidation state catalyst.When used,  heavy oil hydrodesulfurization catalyst needs to be pre-sulfurized to convert it into a sulfurized state to have a high catalytic activity.HDS catalysts are usually prepared by impregnation, and the commonly used impregnation methods include equal volume impregnation and excess impregnation.Metal components can be introduced by co-impregnation or distributive impregnation. For each metal component, it also includes one-time introduction method and stage introduction method.