Method for removing nitrogen oxides from exhaust gases

Details Method for removing nitrogen oxides from exhaust gases Method for removing nitrogen oxides from exhaust gases

B - Operations, Transporting

01

D

23/353

B01D 53/34 (2006.01) B01D 53/56 (2006.01) B01D 53/60 (2006.01)

Patent

CA 1067274

ABSTRACT OF THE DISCLOSURE: Oxides of nitrogen can be removed efficiently from a gas containing such oxides of nitrogen by bringing said gas into contact with an aqueous solution containing an organic acid alkali salt and a salt of metal selected from the group consisting of Fe, Co, Ni, Cu and Mn in the presence of a sulfurous acid alkali salt. This method has been found to be much more efficient than the previous method in which the gas containing oxides of nitrogen was contacted with a solution of a salt of a metal which forms a complex with NOx.

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