Method for the removal of sulfur oxide and nitrogen oxide from e

Details Method for the removal of sulfur oxide and nitrogen oxide from e Method for the removal of sulfur oxide and nitrogen oxide from e

1983-12-12

1990-04-10

Heller, Gregory A.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

423244, B01J 800, C01B 2100, C01B 1700

Patent

active

049159216

ABSTRACT:
Method and apparatus for the removal of sulfur oxides and nitrogen oxides from exhaust gas with the addition of gaseous ammonia at temperatures between 110.degree. and 180.degree. C. The exhaust gas is led across carbon-containing adsorption agent flowing downwardly within a reactor, a portion of sulfur oxide initially being adsorptively removed in a upper part of a travelling bed, with nitrogen oxide catalytically reduced to nitrogen as well as further sulfur oxide being separated in a lower part of the travelling bed. Unloaded adsorption agent is delivered to the upper bed part, partially loaded adsorption agent is removed from that bed part and delivered to the lower bed part without mingling, loaded adsorption agent is removed from the lower bed part and led to a regeneration, after which it is delivered to the upper bed part.

REFERENCES:
patent: 4272497 (1981-06-01), Takahashi et al.
patent: 4400363 (1983-08-01), Grochowski et al.
patent: 4500501 (1985-02-01), Hamada et al.

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