Complexation and removal of mercury from flue gas desulfurization systems
AssigneeEcolab USA Inc.
InventorsNicholas R. Denny, Bruce A. Keiser, David M. Dotzauer, Wayne M. Carlson
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Abstract
A method for the reduction and prevention of mercury emissions into the environment from combusted fossil fuels or other off-gases with the use of peracetic acid is disclosed. The peracetic acid is used for the capture of mercury from the resulting flue gases using a flue gas desulfurization system or scrubber. The method uses peracetic acid in conjunction with a scrubber to capture mercury and lower its emission and/or re-emission with stack gases. The method allows the use of coal as a cleaner and environmentally friendlier fuel source as well as capturing mercury from other processing systems.
Claims18
A method for reducing mercury emissions, comprising:
- providing a gas stream comprising mercury;
- and
- passing the gas stream into a scrubber comprising a scrubber liquor and peracetic acid,
- wherein the scrubber liquor is a limestone slurry and the limestone slurry and the peracetic acid are mixed.
Dependencies are inferred from the claim text.