DEVICE AND METHOD FOR THE ABATEMENT OR SELECTIVE REDUCTION OF NITROGEN OXIDES NOX IN COMBUSTION GAS OR FUMES, IN PARTICULAR IN GAS OR FUMES GENERATED BY THE ACTIVITY OF AN INTERNAL COMBUSTION ENGINE

摘要

A device (100) for abating nitrogen oxides NOx in gases or fumes generated by combustion, in particular in exhaust gases or fumes generated by the activity of an internal combustion engine, wherein said device comprises a first reactor (1) adapted to convert urea as aqueous solution into NH3 ammonia and subject ammonia NH3 to cracking in order to generate a gas containing at least H2 and N2, wherein said gas containing H2 and N2 is added to said gas or fume containing nitrogen oxides, and wherein H2 is made to react with said NOx nitrogen oxides in a second reactor (12).