METHOD OF REMOVING NITRIC OXIDE FROM FLUE GAS

摘要

PURPOSE: A method is provided to remove nitric oxide from flue gas of an incinerating plant through the SNCR(selective noncatalytic reduction). CONSTITUTION: A method of removing nitric oxide from flue gas through the SNCR is composed by the steps of: injecting a reducing agent(14) to flue gas(9) through an injection position(16); feeding secondary air(11) to the upper area of the injection position by using the circulated flue gas as a spraying agent; and changing the amount of the circulated flue gas or secondary air to keep the temperature of the injection position. The method reduces costs by using a large amount of flue gas with no charge.