Regenerable adsorbent for removing sulfur species from hydrocarbon fluids
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United States of America Patent
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Mar 11, 2003
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N/A
app pub date -
Oct 5, 2000
filing date -
Oct 5, 2000
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Abstract
Sulfur species are removed from hydrocarbon fluids by a process that includes contacting the fluid with a solid adsorbent having a porous substrate impregnated with silver oxide. The solid adsorbent preferably comprises activated alumina. The solid adsorbent may be regenerated with a two step process including: 1) heating the adsorbent in an inert atmosphere, preferably an atmosphere containing nitrogen, so that sulfur species are stripped from the adsorbent without oxidizing them, and 2) heating the adsorbent in an oxidizing atmosphere, preferably an atmosphere containing approximately 20% oxygen, so that the silver contained on the adsorbent is re-oxidized, forming silver oxide.
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