Flue gas desulfurization/denitrification using metal-...

Details Flue gas desulfurization/denitrification using metal-... Flue gas desulfurization/denitrification using metal-...

B - Operations, Transporting

01

D

23/350

B01D 53/34 (2006.01) B01D 53/60 (2006.01)

Patent

CA 1251012

FLUE GAS DESULFURIZATION/DENITRIFICATION USING METAL-CHELATE ADDITIVES ABSTRACT A method of simultaneously removing SO2 and NO from oxygen-containing flue gases resulting from the combustion of carbonaceous material by contacting the flue gas with an aqueous scrubber solution containing an aqueous sulfur dioxide sorbent and an active metal chelating agent which promotes a reaction between dissolved SO2 and dissolved NO to form hydroxylamine N-sulfonates. The hydroxylamine sulfonates are then separated from the scrubber solution which is recycled.

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