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Nitrogen oxide was removed from gas mixt. contg. NO2 by catalyst redn. Waste gas was mixed with O2 and NH3 and passed through catalysts contg. MoO3 5-30 and CoO 2-10% with or without V2O5 and/or Nio 10% at 250-600≰C to reduce NOx to N2. Thus, a gas contg. NO 600, NO2 50 ppm, O2 3, H2O 6, CO2 15%, SO2 1500 ppm, and balance N2, to which was added 5% O2, was mixed with NH3 at mole ratio NH3/(NO+NO2) = 1.35 and passed through catalyst.
KR7401478A1974-02-031974-02-03Method of removing nitric oxide from gas mixture
KR790000176B1
(en)