APPARATUS AND METHOD FOR REMOVING NITROGEN OXIDES AND CARBON MONOXIDE FROM EXHAUST GAS USING CATALYTIC PURIFICATION OF GAS EMISSIONS

The invention relates to apparatus and methods for catalytic purification of gas emissions, in particular to the purification of gas emissions from nitrogen oxides NOxand carbon monoxide CO. The apparatus for the purification of gas emissions comprises two sequentially located CO oxidation and NOxreduction catalysts with the load of catalytic grains (6) which are located between the small-meshed grids (5) and plates (13, 14) and which during the purification of gas emissions operate as a fluidized bed (10) created by the influence of the high voltage electric field on the catalytic load. The catalytic grains consist of the substrate material, such as lightweight expanded clay aggregate or the volcanic stone, coated with an active layer of transition metal oxides, such as bimetallic or polymetallic oxide coating. The fluidized bed created under the influence of the electric field ensures good contact between the catalytic grains and the gas flow components CO and NOxthus providing an effective conversion of the latter to carbon dioxide CO2and molecular nitrogen N2.