Hydrogen recovery by adsorbent membranes
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United States of America Patent
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Oct 11, 1994
Issued Date -
N/A
app pub date -
Aug 3, 1992
filing date -
Nov 14, 1989
priority date (Note) -
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Abstract
A composite semipermeable membrane comprising microporous adsorbent material supported by a porous substrate is operated in series with a pressure swing adsorption (PSA) system and the PSA reject gas is used as a sweep gas to improve membrane performance. The integrated membrane-PSA system is particularly useful for recovering high-purity hydrogen from a mixture of hydrogen and hydrocarbons, and is well-suited for integration with a steam-methane reformer.
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