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Abstract

A process for obtaining hydrogen from methanol or ammonia, for fuel cell operation, for example, wherein methanol or ammonia is subjected to evaporation in a first step and in a second step to reforming to give a hydrogen-containing gas mixture, in a third step hydrogen is removed from this gas mixture in a membrane process at a temperature of 300 to 600° C. and in a fourth step the gaseous retentate from the membrane process is burned with ambient air, wherein the second step is a process step upstream of and separate from the third step and the combustion gases are routed via at least two different heat exchangers to provide (i) first the reaction heat for reforming the methanol or ammonia and (ii) then the evaporation heat for evaporating the reformer feed, wherein the permeate from the membrane process preheats the ambient air for the burner in a heat exchanger

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First Claim