METHOD FOR PRODUCING SYNTHESIS GAS BY MEANS OF STEAM REFORMING REACTORS

摘要

A method for producing synthesis gas using at least first and second steam reforming reactors, comprising the following steps: a) mixing a hydrocarbon feedstock gas and steam in such a way as to form the reaction mixture, b) supplying, in parallel, the reaction stages of the first and the second steam reforming reactors with the reaction mixture obtained in step a), c) producing combustion fumes that can be used as heat-transfer fluid inside the steam reforming reactors, d) cooling the combustion fumes to a temperature lower than 1000 °C, e) introducing the combustion fumes from step d) into the "heat-supply" stage of the first steam reforming reactor, f) recovering the combustion fumes at the outlet of the first steam reforming reactor and introducing them into the "heat-supply" stage of the second steam reforming reactor, and g) recovering the synthesis gas at the outlets of the first and second steam reforming reactors.