METHOD FOR PURIFICATION OF HYDROCARBON FEED STOCK FROM SULFUR COMPOUNDS

摘要

A method is claimed for purification of hydrocarbon feed stock by an aqueous solution of hydrogen peroxide and subsequent extraction of sulfur compounds by water. The feed stock is treated in two steps: at the first step the feed stock is treated at raised pH level of medium at pH 8.0-12.5, preferably 8.0-9.5, at the second step the feed stock is treated at lowered pH level of medium at 2.0-6.5, preferably 3.5-6.5 with subsequent extraction of oxidated sulfur compounds by water.