PROCESS FOR THE REMOVAL OF NITROGEN OXIDES

摘要

Disclosed is a method for reducing the content of NOx and N2O in gases, especially in process gases and off gases, comprising the following steps: a ) at least one reducing agent containing nitrogen is added to the gas containi ng NOx and N2O in an amount required for at least full reduction of the NOx; b) a hydrocarbon from carbon monoxide, hydrogen or a mixture of one or several of said gases is added to the gas containing NOx and N2O for the reduction the N2O; and c) the gas mixture is guided into at least one reaction zone with temperatures of up to 450 ~C, containing one or several zeolites loaded with iron. The method can especially be used in the production of nitre in off gases from power plants or in gas turbines.