Methods of 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-efficiency hydrogenation of monoolefinic hydrocarbons and aromatic hydrocarbon oils containing 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 1000 mg per 1000 g of product Wherein the hydrogenation process comprises pretreating the catalyst with at least one organosulfur-containing compound to introduce sulfur of from 0.05 to 1 wt.% (Based on the weight of the catalyst), and at least partially in the liquid phase In the presence of hydrogen at a temperature of 20 to 250C, a pressure of 4 to 50 bar, a GHSV of 0.2 to 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 palladium in weight percent (based on the support).