Process of simultaneously removing nitrogen oxides and...

Details Process of simultaneously removing nitrogen oxides and... Process of simultaneously removing nitrogen oxides and...

B - Operations, Transporting

01

J

23/348, 23/353

B01J 27/053 (2006.01) B01D 53/86 (2006.01)

Patent

CA 1303332

ABSTRACT OF THE DISCLOSURE: In the described process of simultaneously removing nitrogen oxides and sulfur dioxide from an oxygen- containing exhaust gas, the exhaust gas is mixed with NH3 and is then supplied as a fluidizing gas to a fluidized bed, which consists of a catalyst for effecting a reduction of NO with NH3 to form N2 and an oxidation of SO2 with O2 to form SO3. The catalyst consists of a carrier and of catalytically active substances consisting of V205 and of Fe203, FeSO4 and/or Fe2(SO4)3, and alkali sulfates. The SO3 formed by oxidation may be recovered as sulfuric acid or may be combined with a desulfurizing agent, which consists of Na2CO3, MgO, MgCO3, CaO, CaCO3 and/or Ca(OH2).

556970

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