Abatement of mercury in flue gas

Details Abatement of mercury in flue gas Abatement of mercury in flue gas

2009-02-17

2010-11-16

Vanoy, Timothy C (Department: 1793)

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

C095S134000

Reexamination Certificate

active

07833500

ABSTRACT:
The present invention provides a method for the oxidation of Hg0in coal fired flue gas to form Hg2+which is absorbed by the scrubber solution in wet-FGD or SDA, or adsorbed by the fly ash and subsequently removed from the flue stack with ESP and FF, and/or any other means as are known in the art for SOx, NOxand particulate removals. The addition of a second flue gas stream having a halogen and fly ash therein simultaneously with said hydrogen halogen or interhalogens into a coal fired flue gas further increases the oxidation of Hg0to Hg2+.

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