Method of oxidizing mercury in flue gas
AssigneeEcolab USA Inc.
InventorsBruce A. Keiser, Richard Mimna, Nicholas S. Ergang, Robert W. Dorner, Jianwei Yuan, Hung-Ting Chen
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Abstract
Methods for facilitating the removal of mercury from flue gases by converting elemental mercury to oxidized mercury and subsequently capturing the oxidized mercury. In one aspect, a method of removing mercury from a mercury-containing flue gas may include the steps of introducing into the flue gas a sulfide source in an effective amount to convert elemental mercury to gaseous oxidized mercury and then capturing the gaseous oxidized mercury.
Claims19
A method of removing mercury from a mercury-containing flue gas, comprising the steps of:
- a) introducing into the flue gas a sulfide source in an effective amount to convert elemental mercury to gaseous oxidized mercury;
- and
- b) capturing the gaseous oxidized mercury.
A method of removing mercury from a mercury-containing flue gas, the method comprising:
- a) contacting the mercury-containing flue gas with a scrubber liquor of a wet flue gas desulfurizer, wherein the scrubber liquor comprises a sulfide source in an effective amount to convert elemental mercury to oxidized mercury;
- and
- b) capturing the oxidized mercury.
Dependencies are inferred from the claim text.