Method of removing oxides of nitrogen from flue gas

Details Method of removing oxides of nitrogen from flue gas Method of removing oxides of nitrogen from flue gas

1987-02-05

1988-04-05

Heller, Gregory A.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

423235, B01J 800, C01B 2100

Patent

active

047357851

ABSTRACT:
A flue gas stream having passed a flue gas desulfurization plant 2 enters a reactor 6 flowing through an activated carbon bed. The flue gas entering the reactor continuously is discontinuously blended with ammonia, thereby achieving a low ammonia content of the flue gas leaving the reactor, while maintaining a high efficiency of nitrogen oxide removal. The duration of ammonia addition and the rate of flow at which ammonia is added to the flue gas stream are controlled as a function of the desired efficiency of nitrogen oxide removal and the ammonia concentration measured in the reactor.

REFERENCES:
patent: 4302205 (1981-11-01), Muraki et al.
patent: 4314345 (1982-02-01), Shiraishi et al.
patent: 4469662 (1984-09-01), Hamada et al.
patent: 4473535 (1984-09-01), Kittrell et al.
patent: 4473537 (1984-09-01), Ford et al.

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