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Catalytic reactors for fuel processing

: Kolb, Gunther


Önsan, Zeynep Ilsen:
Multiphase Catalytic Reactors. Theory, Design, Manufacturing, and Applications
New York/N.Y.: Wiley and Sons, 2016
ISBN: 978-1-118-11576-3 (Print)
ISBN: 978-1-119-24849-1 (Online)
ISBN: 1-118-11576-7
Aufsatz in Buch
Fraunhofer ICT-IMM ()
autothermal reformers; catalytic reactor; fixed beds reactors; fuel processing; membrane reactors; microreactor; monolith reactors; water-gas shift reactors

Fuel processing is the conversion of fossil and regenerative fuels to hydrogen-containing gas mixtures. The chemical conversion is performed in most cases in the gas phase, normally heterogeneously catalyzed in the presence of a solid catalyst. The first step of the conversion procedure is named reforming. It has been established in large-scale industrial processes for many decades. The industrial applications most commonly use natural gas as feedstock. The product of the natural gas reforming process is synthesis gas, a mixture of carbon monoxide and hydrogen, which is then used for numerous processes in large-scale chemical production which are not subject of this section but rather the technology, which provides a hydrogen-containing gas mixture, named reformate, which is a feed suitable for a fuel cell. The fuel cell then converts hydrogen to electrical energy. Depending on the fuel cell type, removal of carbon monoxide might be required, which is achieved by water-gas shift and preferential oxidation reactions performed downstream the reformer. The reactor types suitable for mobile and decentralized applications are, apart from conventional fixed-bed reactors, ceramic and metallic monoliths, (microchannel) plate heat exchangers, and membrane reactors which allow the combination of membrane separation with the reactions mentioned previously.