Method and device for reverse displacement conversion of water and gas in multiple zones

Abstract

The invention relates to a method and device for producing synthesis gas by converting a feedstock containing CO2, wherein the CO2 (4) is treated with H2 (5) in a reaction unit RWGS (6) to produce a gas RWGS (7), the reaction unit RWGS comprising: a heating zone (A) for heating the CO2 and / or H2, and producing CO2 and H2 heated to at least 800 °C; a distribution zone (B) for distributing a mixture comprising the heated CO2 and H2 to a reaction zone (C); and the reaction zone (C) comprising a catalytic bed for converting the CO2 and H2 into CO and H2O in order to produce the synthesis gas.