Method and apparatus for treating an exhaust gas

Details Method and apparatus for treating an exhaust gas Method and apparatus for treating an exhaust gas

1980-08-15

1981-12-22

Peters, George O.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

422169, 422180, B01D 5336

Patent

active

043070680

ABSTRACT:
A method for treating an exhaust gas containing nitrogen oxides, oxygen and soot, in which the nitrogen oxides are selectively reduced into nitrogen by adding ammonia to the exhaust gas as a reducing agent under existence of a catalyzer, is improved in that the nitrogen oxide is removed by introducing the exhaust gas into a denitration reactor in which a plurality of planar catalyzer packs or catalyzer packs having gas passage holes are arrayed in parallel to a gas flow and a linear velocity of the gas through the reactor is selected at 4-15 m/s. In one preferred mode of the method, soot having a relatively large particle diameter is preliminarily removed by a dust remover disposed upstream of the reactor, while most of the remaining soot is removed by a high performance dust collector disposed downstream of the reactor. Denitration reactor structures suitable for the improved method for treatment are also disclosed herein.

REFERENCES:
patent: 3581463 (1971-06-01), Roberts
patent: 4102980 (1978-07-01), Sasaki et al.
patent: 4193972 (1980-03-01), Pohlenz
"Chemical Engineering", Apr. 11, 1977, p. 86.

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