Method and apparatus for obtaining high purity hydrogen from methanol or ammonia for fuel cell operation

The subject of the invention is a process for obtaining hydrogen from methanol or ammonia, for example for fuel cell operation, for example characterized in that methanol or ammonia is evaporated in a first step and is reformed in a second step into a hydrogen-containing gas mixture, hydrogen is removed from the gas mixture in the membrane process at a temperature of 300 DEG C to 600 DEG C in a third step, and gaseous retentes of the membrane process are burned in ambient air in a fourth step, the second step being a process step upstream of the third step and being separate from the third step, and the fuel gas is directed through at least two different heat exchangers in which permeate of the membrane process preheats the ambient air for the combustor, to (i) provide reaction heat for reforming methanol or ammonia first and (ii) provide evaporation heat for evaporating the reformer feed in the flow direction of the fuel gas, and wherein the permeate of the membrane process preheats the ambient air for the c