Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Nitrogen or nitrogenous component
Reexamination Certificate
2006-03-14
2006-03-14
Cooke, Colleen P. (Department: 1754)
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Nitrogen or nitrogenous component
C423S239100, C423S235000
Reexamination Certificate
active
07011801
ABSTRACT:
A method for the simultaneous removal of nitrogen oxides and laughing gas from a stream containing nitrogen oxides and laughing gas, wherein a first catalyst that contains cobalt and, as support, an inorganic metal oxide, and a second catalyst that contains iron and, as support, an inorganic metal oxide, are used. In particular the method is carried out in such a way that (a) the gas stream containing nitrogen oxides and laughing gas is reacted with a reducing gas, the reducing gas comprising a saturated hydrocarbon, in the presence of the first catalyst and (b) the gaseous product from step (a) is reacted with a reducing gas, the reducing gas comprising a saturated hydrocarbon, in presence of a second catalyst. The catalyst system can be used for the treatment of off-gases from a nitric acid plant.
REFERENCES:
patent: 4003976 (1977-01-01), Komatsu et al.
patent: 5849254 (1998-12-01), Suzuki et al.
patent: 6217831 (2001-04-01), Suzuki et al.
patent: 6872372 (2005-03-01), Verhaak
patent: 0496526 (1992-01-01), None
patent: 0541008 (1996-01-01), None
patent: 0 935 055 (1999-08-01), None
patent: 2 162 830 (1986-02-01), None
patent: WO 99 49954 (1999-10-01), None
patent: WO 01/21288 (2001-03-01), None
patent: WO 01 74475 (2001-10-01), None
Kapteijn F et al:, “Kinetic Analysis of the Decomposition of Nitrous Oxide Over ZSM-5 Catalysts” Journal of Catalysis, Academic Press, Duluth MN, US, vol.. 167, 1997, pp. 256-265, XP000979359 ISSN: 0021-9517 p. 257-p. 258.
Pels Jan Remmert
Van Den Brink Rudolf Willem
Cooke Colleen P.
Stichting Energieonderzoek Centrum Nederland
Young & Thompson
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