Method for reducing nitrogen oxides and halogenated organic compounds in a waste gas in a combustion installation comprises removing fly ash using a dust separator, removing hydrochloric acid in a first scrubber and further processing

摘要

Method for reducing nitrogen oxides and halogenated organic compounds in a waste gas in a combustion installation comprises removing fly ash using a dust separator (7), removing hydrochloric acid in a first scrubber (8) by adding water, removing sulfur dioxide in a second scrubber (9) by adding water and ammonia forming ammonium sulfite and subsequently reacting with oxygen to form ammonium sulfate dissolved in water, injecting aqueous ammonium sulfate/sulfite solution into the oxygen-containing waste gas forming ammonia and sulfur dioxide. An independent claim is also included for an arrangement for reducing nitrogen oxides and halogenated organic compounds in a combustion installation.