Patent ID: 8691181

Claim:
A process for preparing and converting a synthesis gas, which has a plurality of different operating states consisting essentially of mutually alternating (i) a daytime operation and (ii) a nighttime operation, wherein: (i) the daytime operation comprises dry reforming carbon dioxide and hydrocarbons and steam reforming hydrocarbons to obtain a hydrogen-rich synthesis gas with a supply of renewable energy, wherein the daytime operation excludes partial oxidation of hydrocarbons, and (ii) the nighttime operation comprises the partial oxidation of hydrocarbons to obtain a hydrogen-rich synthesis gas wherein the nighttime operation excludes the dry reforming and the steam reforming and wherein the nighttime operation is performed when the supply of renewable energy is insufficient for the dry reforming and the stream reforming, and, wherein the hydrocarbons used for the dry reforming, the steam reforming and the partial oxidation are natural gas, biogas or another methane-containing gas whose methane content is higher than 70% by volume; wherein the synthesis gas obtained during the daytime operation or the nighttime operation is used to produce products of value.