Process for the preparation of synthesis gas

摘要

Process for the preparation of synthesis gas from an essen tially dry hydrocarbon feedstock comprising olefins, hydro- gen and carbon monoxide, the process comprising the follow ing steps: (a) selectively hydrogenating the olefins in the hydrocar bon feedstock at a temperature between 60 to 190°C to ob tam a hydrogenated hydrocarbon feedstock comprising hydro gen, carbon monoxide and saturated hydrocarbons, (b) Adding steam to the hydrogenated hydrocarbon feed stock, (c) performing a water gas shift reaction in the presence of steam on the hydrogenated hydrocarbon feedstock to ob tam a shifted, hydrogenated hydrocarbon mixture, (d) Converting the shifted, hydrogenated hydrocarbon mix ture to obtain a synthesis gas.