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Title:
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Water gas shift membrane reactor
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Author(s):
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Published by:
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Publication date:
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ECN
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1995
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ECN report number:
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Document type:
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ECN-RX--95-047
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Other
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Number of pages:
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Full text:
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19
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Download PDF
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Abstract:
A water gas shift ceramic membrane reactor is being investigated. Thereactor can be applied to control CO2 emission from a coal based power
plant. Ceramic membranes with a perm-selectivity of at least 15 at 325C for
H2-CO2 have been prepared. Through model calculations it has been shown
that these membranes can enhance the conversion of the reaction and realize
an acceptable separation in H2 and CO2 for this application. When the
membrane selectivity can be increased, it does not seem to be necessary to
surpass approximately 40 because then the gain in reactor performance is
marginal. Bench-scale membrane reactor experiments at elevated temperatures
and pressures will be conducted in order to proof the principle on a
considerable scale. Therefore, tubular shaped membranes with a length up to
70 cm and special dedicated catalysts are being fabricated. Development of
this process shows that full scale implementation aspects have to be
considered in an early stage. 6 figs., 4 tabs., 6 refs.
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