Importance

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Abstract

The present invention relates to a process and a system for the production of hydrogen and carbon dioxide starting from a feed stream comprising carbon monoxide, which is reacted with water and a halogen reactant. The process in particular comprises the steps of: a) reacting in a first reaction zone a feed stream comprising carbon monoxide (CO) with water (H₂O) and bromine (Br₂) under reaction conditions effective to produce a gaseous CO₂-containing effluent stream and an aqueous solution of hydrogen bromide (HBr); and, b) supplying said aqueous solution of hydrogen bromide (HBr) to a second reaction zone and decomposing said hydrogen bromide (HBr) under conditions effective to produce a gaseous H₂-rich stream and a stream comprising bromine (Br₂), wherein said hydrogen bromide is decomposed in step b) by means of electrolysis.

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First Claim