the advantages and characteristics of using SNCR+SCR combined denitrification technology in the denitrifi-cation transformation of alumina roasting flue gas are analyzed,and the technical points of denitrification transformation de-sign are proposed.The use of SNCR+SCR combined denitrification technology not only ensures denitrification efficiency but also extends the service life of the catalyst.Its transformation cost is low and the application effect is good,which provides a reference for the transformation of flue gas denitrification in alumina roasting furnaces.
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