Method of abating nitrogen oxides in combustion waste gases

Details Method of abating nitrogen oxides in combustion waste gases Method of abating nitrogen oxides in combustion waste gases

1980-02-26

1981-04-21

Peters, G. O.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

106100, B01D 5336

Patent

active

042632641

ABSTRACT:
A method of abating nitrogen oxides in waste gases resulting from a combustion process comprises the steps of introducing the nitrogen oxides-(NOx-)containing waste gases into an enclosed furnace body having surrounding wall, at an opening of a reduced cross sectional area formed in the bottom of the furnace body, while feeding fuel and ground raw material into the furnace portion above the gas inlet opening, thus forming a jet zone, producing a reducing atmosphere in the jet zone as a result of incomplete combustion of the fuel caused by insufficient supply of air (or oxygen) for the combustion, and then bringing into mutual contact and mixing the combustion waste gases and thermal decomposition of the material, and thereby reducing the NOx in the combustion waste gases through the catalytic action of the thermal decomposition products, and an apparatus for practicing the method.

REFERENCES:
patent: 3838193 (1974-09-01), Kajitani et al.
patent: 4035193 (1977-07-01), Miyamoto et al.
patent: 4080218 (1978-03-01), Mori et al.

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