Process for the purification of exhaust gases of plants for the production of cement clinker.

摘要

A process for the purification of exhaust gases is described, the filter zone through which the exhaust gases flow containing at least one adsorption step, in which is provided a suitable adsorbent for retaining NHx compounds, heavy metals and/or trace pollutants, at least part of which adsorbent being removed from the adsorption step at defined time intervals or at a defined load and being introduced into the final combustion zone and/or preheating zone. By means of a process of this type, the NOx content of the exhaust gases is substantially reduced and at the same time heavy metals and trace pollutants are removed from the exhaust gases.