Method of denitration of exhaust gas and apparatus therefor

Details Method of denitration of exhaust gas and apparatus therefor Method of denitration of exhaust gas and apparatus therefor

2006-12-28

2010-11-30

Langel, Wayne (Department: 1793)

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Mixture is exhaust from internal-combustion engine

C422S172000, C423S213200, C423S235000, C423S239100, C423S413000

Reexamination Certificate

active

07842266

ABSTRACT:
A method of exhaust gas denitration in which nitrogen oxides contained in a low-temperature exhaust gas are removed at a high NOxremoval efficiency. A injection pipe (11) is disposed in a flue (10) for an exhaust gas (x) so that the pipe protrudes from the inner wall of the flue. A hydrocarbon compound (b) and a nitrogen compound (a) are supplied through the injection pipe (11) into the flue (10). The hydrocarbon compound (b) is burned to form a combustion region (s). In this combustion region (s), amine radicals are produced from the nitrogen compound (a). These amine radicals are mixed with nitrogen oxides contained in the exhaust gas (x) to reductively remove the nitrogen oxides.

REFERENCES:
patent: 6247303 (2001-06-01), Broer et al.
patent: 6258336 (2001-07-01), Breen et al.
patent: 2005/0069477 (2005-03-01), Hong et al.

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