Process for removing sulfur dioxide and nitrogen oxides from flu

Details Process for removing sulfur dioxide and nitrogen oxides from flu Process for removing sulfur dioxide and nitrogen oxides from flu

1991-08-29

1993-04-06

Lewis, Michael

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

423239, 4232422, 42324307, B01D 5334

Patent

active

052001601

ABSTRACT:
A process for removing sulfur dioxide and nitrogen oxide from flue gases in a wet scrubbing system using lime to remove the sulfur dioxide and ferrous-EDTA to remove the nitrogen oxides, where an initial reducing agent, such as sodium sulfide, and an antioxidant, such as hydrazine, are added to the scrubbing system, with oxidation of the ferrous-EDTA to ferric-EDTA curtailed while removal of nitrogen oxides is increased.

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Lee, Y. J., Abstracts of Papers, 200th ACS National Meeting, Division of Fuel Chemistry, Abstracts #76 and 85 (1990).
Lee, Y. J., et al. "Production and Application of Thiosulfate in Lime-Based Wet FGD". Preprints of papers, American Chemical Society Division of Fuel Chemistry, vol. 35, #4 (1990).
Lee, Y. J., et al. "Chemical Regeneration of Fe(II)-EDTA in Wet Scrubbers". Preprints of papers, American Chemical Society Division of Fuel Chemistry, vol. 35, #4 (1990), pp. 1427-1432.

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