Impregnated activated carbon for improved removal of malodorous compounds
AssigneeCalgon Corporation
InventorsRabindra Kumar Sinha, Norman J. Wagner, Ronald S. Joyce
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Abstract
An improved process for the removal of malodorous compounds, especially sulfur-containing compounds, for example H.sub.2 S and methyl mercaptan, from gas streams containing oxygen in which a bed of activated carbon treated with NaOH and moisture is used to remove said compounds. The treatment, which may also be combined with regeneration of the activated carbon, is effected, typically, by applying to the carbon one bed volume of dilute (4-6%) NaOH solution, draining and drying with 50- 100% R.H. air.
Claims5
A process for removal of H.sub.2 S and methyl mercaptan from gas streams containing oxygen, comprising contacting said gas stream with an activated carbon having impregnated therein from about 0.5 to about 20 percent by weight of NaOH, and from about 4 to about 50 percent by weight of moisture, both based on weight of dry activated carbon.
An activated carbon for removal of H.sub.2 S and methyl mercaptan, characterized by having impregnated therein from about 0.5 to about 20 percent by weight of NaOH, and from about 4 to about 50 percent by weight of moisture, both based on weight of dry activated carbon.
Dependencies are inferred from the claim text.