METHOD AND AGENT FOR INHIBITING STAINING AND CORROSION

摘要

The purpose of the present invention is to provide a method and a preparation, both of which can inhibit staining and corrosion caused by a staining substance in an exhaust gas. A method for inhibiting staining and corrosion according to the present invention comprises a step of bringing an exhaust gas that contains a staining substance comprising at least one compound selected from the group consisting of a chlorine compound, a sulfuric acid compound and a hydrogen sulfate compound into contact with a reactant to cause the reaction between the staining substance and the reactant, thereby liquefying or gasifying the staining substance. Preferably, the reactant contains a quaternary ammonium compound.