Gas purification by adsorption of hydrogen sulfide
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United States of America Patent
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Mar 22, 2011
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Jul 17, 2008
filing date -
Jul 17, 2008
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Abstract
Hydrogen sulfide is removed from a hydrogen rich gas stream using adsorbents having a low loss of carbon dioxide adsorption capacity upon sulfur loading including high purity silica gels, titania or highly cross-linked, non-chemically reactive resins. The adsorbents may be used to adsorb both carbon dioxide and hydrogen sulfide, or may be used as a guard bed upstream of a separate carbon dioxide adsorbent.
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