Method for hydrogenating diolefins and optional olefins in hydrocarbon fractions rich in aromatics using metal catalysts impregnated with organic sulfur-containing compounds

摘要

The present invention relates to a process for the selective high-hydrogenation of aromatic hydrocarbon oils containing monoolefinic hydrocarbons and polyolefinic and / or acetylenic hydrocarbons, wherein the degree of aromatic conversion is limited to a maximum of 0.15% by weight and the bromine number is from 100 to 10000 mg per 100 g of product Wherein the hydrogenation process comprises pretreating the catalyst with at least one organosulfur-containing compound prior to the activation step to introduce sulfur of from 0.05 to 1% by weight (based on the weight of the catalyst) In the presence of hydrogen at a temperature of 20 to 250 ° C, a pressure of 4-50 bar, a GHSV of 0.2-25 h -1 and a ratio of H 2 / mono olefin + polyolefin and / or acetylene of 0.3 to 100 Is passed through a hydrogenation zone in contact with a catalyst containing 0.1 to 1% by weight (based on the support) of palladium.