Enhancement of reduction resistance for manganese oxide adsorbents
AssigneeUop LLC
InventorsStephen R. Caskey, Michael B. Hamoy
Life of this patent
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Abstract
Processes for removing arsenic compounds from a feed stream using an adsorbent in disclosed. The process includes contacting a feed stream comprising at least arsenic and sulfur compounds with an adsorbent comprising an low-crystallinity manganese oxide, at least one halide and a binder, to provide a treated effluent substantially free of the arsenic and sulfur compounds.
Claims20
A method for removing at least one of an arsenic compounds and sulfur compounds from a feed stream comprising contacting the feed stream with an adsorbent comprising a manganese oxide in an amount of about 20 to about 80 wt %, at least one halide in an amount of about 0.25 to about 1.5 wt % and a binder, to provide an effluent stream comprising less than about 20 wppb of the at least one of the arsenic compounds and sulfur compounds.
A method for removing at least one of an arsenic compounds and sulfur compounds from a feed stream comprising contacting the feed stream with an adsorbent comprising a low crystallinity manganese oxide in an amount of about 20 to about 80 wt %, at least one halide salt in an amount of about 0.25 to about 1.5 wt % and a binder, to provide an effluent stream comprising less than about 20 wppb of the at least one of the arsenic compounds and sulfur compounds, wherein the manganese oxide comprises a low crystallinity manganese oxide is obtained from decomposing manganese carbonate to form the low crystallinity manganese oxide.
Dependencies are inferred from the claim text.