Process for the production of medicinal white oils and medicinal paraffins

摘要

The application relates to a process for producing medical white oils and medical paraffins from petroleum fractions containing aromatics, nitrogen, oxygen and sulfur compounds, such as light and heavy atmospheric gas oils, vacuum gas oils and residual oils, which are pretreated in a first treatment stage by sulfuric acid refining or catalytic hydrogenation , by hydrogenation in a second stage under pressure of 50-200 bar and elevated temperature on a nickel-containing catalyst, the oxide stage catalyst of the second stage being reduced with hydrogen-containing gases, then passivated and then reactivated with hydrogen before The hydrogenation to medical white oils or paraffins takes place.