Method of purifying the exhaust gases from plants for the produc

Details Method of purifying the exhaust gases from plants for the produc Method of purifying the exhaust gases from plants for the produc

1990-12-20

1993-06-15

Heller, Gregory A.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

423210, 423237, 42324401, 106761, B01J 800, C01B 2100, C01B 1700, C01C 300

Patent

active

052195449

ABSTRACT:
The invention relates to a method of purifying the exhaust gases from plants for the production of cement clinker, in which the filter zone through which the exhaust gases flow contains at least one adsorption stage in which an adsorbent is provided which is suitable for fixing NH.sub.x compounds, heavy metals and/or trace pollutants, at least a proportion of the adsorbent being removed from the adsorption stage at specific intervals of time and introduced into the final burning zone and/or preheating zone. By such a method the NO.sub.x content of the exhaust gases is significantly reduced, and at the same time heavy metals and trace pollutants are eliminated from the exhaust gases.

REFERENCES:
patent: 4910005 (1990-03-01), Heins et al.
patent: 4919905 (1990-04-01), Horaguchi et al.

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