| 主权项 |
1. A method for preventing fouling of an exhaust gas flow path of a burning equipment, the method comprising:
a step of adding a tertiary amine and/or a quaternary ammonium compound to an exhaust gas which contains ammonium hydrogen sulfate which is generated in a burning equipment, thereby forming a reaction product between the ammonium hydrogen sulfate and the tertiary amine and/or the quaternary ammonium compound, and a step of controlling a temperature and a relative humidity in at least apart of an exhaust gas flow path of the burning equipment in such a way that the reaction product may be kept in a solid state, wherein the tertiary amine is represented by formula (I) where R1 to R3 represent a linear, a branched, or a cyclic alkyl group having 1 to 6 carbon atoms, or a linear, a branched, or a cyclic alkenyl group having 1 to 6 carbon atoms, and R1 to R3 may be the same or different with each other, and the quaternary ammonium compound is represented by formula (II) where R4 to R6 represent a linear, a branched, or a cyclic alkyl group having 1 to 6 carbon atoms which may be optionally substituted by a hydroxyl group, or a linear, a branched, or a cyclic alkenyl group having 1 to 6 carbon atoms which may be optionally substituted by a hydroxyl group, and R4 to R6 may be the same or different with each other, and where R7 represents a linear, a branched, or a cyclic alkylene group having 1 to 6 carbon atoms. |
