Journal
AICHE JOURNAL
Volume 54, Issue 10, Pages 2735-2750Publisher
WILEY
DOI: 10.1002/aic.11568
Keywords
hydrogen; steam reforming; autothermal reforming; membrane reactor; thermal front
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Funding
- US-Israel Binational Science Foundation
- Ministry of Science (Infrastructure Fellowship Program)
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Hydrogen production by autothermal methane steam reforming in a catalytic fixed bed membrane reactor has been analyzed and simulated. The two-compartment reactor indirectly couples the endothermic steam reforming with methane oxidation, while hydrogen is separated by a permselective Pd membrane. Simulations of the reactor, using published kinetics, map the acceptable domain of operation and the optimal set of operating parameters. The simulations exhibit slow-moving thermal fronts and the steady-state operation domains bounded by stationary fronts, separating domains of upstream and downstream-moving fronts. Front velocity depends on thermal coupling and hydrogen separation. An analytical approximation for the thermal front velocity in a thermally balanced reactor has been developed. (C) 2008 American Institute of Chemical Engineers.
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