Process for the production of synthesis gas

C - Chemistry – Metallurgy – 01 – B

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C01B 3/38 (2006.01) C01B 3/02 (2006.01)

Patent

CA 2442491

Process and system for the production of synthesis gas from a hydrocarbon feed stock comprising the steps of endothermic and/or adiabatic catalytic steam reforming and autothermal steam reforming in series, wherein the steam reforming is carried out in one or more endothermic stages in series or in one or more adiabatic steam reforming stages in series with intermediate heating of feed stock gas leaving the adiabatic reforming stages and wherein carbon monoxide containing gas characterised by having a molar ratio of hydrogen to carbon of less than 4.5 is added prior to at least one of the endothermic or adiabatic steam reforming stages and/or prior to the autothermal steam reforming step.

Méthode et système de production d'un gaz de synthèse à partir d'une charge d'hydrocarbures; la méthode comprend les étapes suivantes : reformage endothermique et/ou adiabatique catalytique à la vapeur, et reformage autothermique en série, où le reformage à la vapeur est exécuté en une ou plusieurs étapes endothermiques en série, en une ou plusieurs étapes de reformage adiabatique en série avec un chauffage intermédiaire du gaz de charge sortant des étapes de reformage adiabatique, et où du monoxyde de carbone, contenant des gaz caractérisés par un rapport molaire d'hydrogène/carbone de moins de 4,5, est ajouté avant au moins une des étapes de reformage endothermique ou adiabatique à la vapeur et/ou avant l'étape de reformage autothermique à la vapeur.

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