Patent ID: 8894764
Filing Date: 2014-11-25
Classification: B01D,C04B,F01N,F23J,F27B,F27D

Abstract:
1. A method for the selective non-catalytic reduction SNCR of NO x of process gas in industrial cement production systems, comprising the following steps: tapping a flow (Q) of gas to be treated from any point of the cement production system in which said gas has a temperature comprised between 180° C. and 800° C.; conveying said flow (Q) of gas to a filtering element adapted to separate possible solid particles from the gaseous current; conveying the clean gas let out from said filtering element to a reactor in which the reactant in form of aqueous solution is injected; atomizing aqueous solution containing the reactant introducing into the gas to be treated, thus obtaining the simultaneous, immediate evaporation of water and gasification of the reactant; reintroducing the flow (Q