Abstract: The present invention relates to an apparatus and a method for the selective non-catalytic reduction (SNCR) of NOx in industrial cement production plants. In particular, the method according to the present invention provides for the atomization of an aqueous solution containing the reagent by introducing it into the gas to be treated that is at a high temperature, thus achieving the simultaneous and immediate evaporation of the water and gasification of the reagent. Thanks to this method, there is achieved improved performance of the non-catalytic reduction process of NOx while using the same reagent or, specularly, the same performance with a lesser amount of reagent being required, with consequent reduction of the costs.

Abstract: The present invention relates to a spill return nozzle, particularly suitable for use in gas cooling, characterized in that, alongside the ducts for discharge and return of the flow of liquid, it is provided with means suitable to convey a flow of air toward the outlet of the nozzle. With the nozzle according to the present invention it is possible to obtain an output jet with optimized shape and dimensions of the atomized droplets, thereby increasing cooling efficiency in the case of use of the nozzle in gas cooling processes.