| 摘要 |
Abstract Method and plant for flue gas denoxing The invention relates to a method for depleting nitrogen oxides from an oxygen-containing gas stream, wherein the gas stream is brought into contact with a scrubbing solution containing ammonia and ammonium sulphite in a reduction step, whereby NO2 present in the gas stream is reduced to N2 and nitrogen monoxide present in the gas stream is reacted with ammonia and oxygen to form ammonium nitrite in an NO elimination step, wherein the reaction of the nitrogen monoxide in the NO elimination step proceeds at elevated pressure. Likewise, a plant for operating the method according to the invention is disclosed. B z K F SoxW 1 OX .NOxW W V R p z y NNH3 R~ckg ew. Fig. 1 |
