PROCESS AND PLANT FOR PRODUCING SYNTHESIS GAS

摘要

For producing a synthesis gas containing hydrogen and carbon monoxide from a starting gas containing hydrocarbons, the starting gas is split up into a first partial stream (T1) and a second partial stream (T2), wherein the first partial stream (T1) is supplied to a steam reformer (13) in which it is catalytically converted together with steam to obtain a gas stream containing hydrogen and carbon oxides, wherein downstream the steam reformation the first partial stream (T1) is again combined with the second partial stream (T2), and wherein the combined gas stream is supplied to an autothermal reformer (32) in which the combined gas stream together with an oxygen-containing gas is autothermally reformed to a synthesis gas. The first partial stream (T1) is guided directly into the steam reformer (13) and the second partial stream (T2) is guided through a pre-reformer (23) before passing through the autothermal reformer (32).