Patent ID: 7556728

Claim:
A process for the manufacture of a gasoline blending component containing paraffinic hydrocarbons and being essentially free of sulphur compounds, comprising hydrogenating in two steps a mainly olefmic liquid feed-stock comprising olefins, and sulphur compounds as impurities, in the presence of hydrogen and a noble metal catalyst on aluminium oxide support, wherein in the first step the major part of olefins are converted and in the secondary step the remaining olefins and sulphur compounds react, wherein a trickle-bed reactor is used in the first step and in the second step, wherein the feed-stock comprises 80-97 wt % of C 8 olefins, 3-20 wt % of C 12 olefins, and 0.1-7 wt % of C 9 , C 10 , C 11 and olefins heavier than C 12 , wherein the reaction temperature in the first step is in the range of 150-230° C. and the pressure is in the range of 20-70 bar and in the second step the temperature is in the range of 190-260° C. and the pressure is in the range of 20-70 bar, wherein the reaction temperature in the second step is higher than the reaction temperature in the first step, wherein the hydrogen feed/olefin feed molar ratio is from 0.9 to 2.0, and wherein the concentration of the noble metal in the noble metal catalyst is less than 1 wt %.