Patent ID: 9643843
Date: 2017-05-09
CPC Classifications: C01B,Y02P

Claim:
1. A process for producing synthesis gas from hydrocarbonaceous feed gas, the process comprising: prereforming the feed gas comprising a higher hydrocarbon, in a prereforming zone, at a temperature in a range of from 470 to 500° C., to at least partly convert the higher hydrocarbon into methane; and heating the feed gas, before introduction of a pre-reformed effluent into a main reforming zone, by exothermal catalytic partial oxidation of the hydrocarbon under partial oxidation conditions and by adding a controlled amount of an oxidizing agent, to obtain the pre-refomied effluent; and reforming the pre-reformed effluent in a separate reactor from the prereforming zone, to obtain a synthesis gas comprising a carbon oxide and hydrogen, in the main reforming zone, wherein catalysts for the exothermal catalytic partial oxidation and for the prereforming are present in at least one common fixed bed traversed by the feed gas.