METHOD AND APPARATUS FOR SEPARATING HYDROGEN GAS
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United States of America Patent
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Issued Date -
Nov 25, 2010
app pub date -
Oct 17, 2007
filing date -
Oct 20, 2006
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Abandoned
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Abstract
A hydrogen gas separation method utilizing PSA process employs a plurality of adsorption towers A, B, C loaded with an adsorbent for separating the hydrogen gas from a hydrogen-containing gas mixture, and a cycle including introducing the gas mixture into the adsorption tower, adsorbing unnecessary gas in the gas mixture by the adsorbent, leading out product gas having high hydrogen concentration from the adsorption tower, desorbing the unnecessary gas from the adsorbent, and leading out desorbed gas containing the unnecessary gas and residual gas in the adsorption tower from the adsorption tower, is repeated. The adsorbent includes an activated carbon-based first adsorbent D located on the upstream side of the flow direction of the gas mixture in the adsorption tower with an filling ratio of 60 to 80%, and a zeolite-based second adsorbent E located on the downstream side of the flow direction with filling ratio of 40 to 20%.
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