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Title:
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Palladium alloy membranes for energy efficient membrane reactors
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Author(s):
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Published by:
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Publication date:
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ECN
Energy Efficiency in Industry
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1-10-2004
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ECN report number:
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Document type:
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ECN-RX--04-095
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Conference Paper
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Number of pages:
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Full text:
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13
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Download PDF
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Presented at: 6th International Conference on Catalysis in Membrane Reactors, Lahnstein, Germany, 7-9 juli 2004.
Abstract:
In ECN?s
vision hydrogen separation membranes will play a key role in future
power production systems and industrial chemical production processes.
The driving force for the application of these membranes is that during
reaction favourable thermodynamics can be utilised to increase the efficiency
while elegantly CO2 can be captured under high pressure or
chemical products can be obtained cost-effectively.
Applications envisaged
and currently investigated are:
·
process integrated hydrogen membrane reactors for reforming,
water gas shift and production of paraffins with parallel removal of
hydrogen,
·
small-scale efficient hydrogen production with membrane reactors,
·
hydrogen recovery from industrial (waste) streams.
In the above processes membrane separation can only be economically
viable using current thin layer palladium alloy membrane technology,
however a further increase in flux and/or decrease in membrane price
is absolutely needed to convince the process owners of the suitability
of this promising technology. Membrane
development at ECN focuses on the development of thinner and cheaper
metallic membranes with higher permeation rates. Important activities
concern the development of reproducible manufacturing techniques for
porous stainless steel supported thin layer palladium alloy membranes,
improvement of long-term stability and prevention of performance decrease
due to poisonous adsorbing gas components such as CO or sulphur. The
research is guided and supported by advanced process studies and flowsheet
calculations using membrane reactor simulators and membrane reactor
testing under simulated realistic conditions. This paper gives
an overview of the results and current status of the membrane materials
development as part of the R&D trajectory of hydrogen membrane reactors
at ECN.
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