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Primary Examiner: Williams, Howard S.
Assistant Examiner:
Attorney: Stevens, Davis, Miller & Mosher

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Title: Method for removing nitrogen oxides from nitrogen oxide-containing gases

Abstract: There is disclosed a method for removing nitrogen oxides from a nitrogen oxide-containing gas by contacting the gas with ammonia excited by ultraviolet irradiation in the presence of a catalyst to react the nitrogen oxides with the ammonia. According to the method, the reaction of nitrogen oxides with ammonia proceeds more rapidly than in the case of prior art methods.

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Inventors: Araki, Tadashi (Iwaki, JP)
Saito, Hatsuo (Iwaki, JP)
Funabashi, Masayuki (Iwaki, JP)
Saito, Ritaro (Iwaki, JP)
Seguchi, Koji (Hino, JP)

Application Number: 865839
Filing Date: 1977-12-30
Publication_date: 1979-03-27
Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha (Tokyo, JP)
Primary Class(es): 204/157.3 204/157.46
Other Classes:
US Patent Ref:

2753300	Jul, 1956	Mantell et al.	204/157.
3869362	Mar, 1975	Machi et al.	204/157.
4097349	Jun, 1978	Zenty	204/157.

Other Refs: Other References: Jayanty et al., J. Phys. Chem. 80(5), pp. 433-437 (Feb. 26, 1975).
Kagiya et al., Nippon Kagaku Kaishi (1976) (6): 941-945.