FIELD: chemistry.
SUBSTANCE: invention relates to method for increasing active service term of SCR-catalyst. Method includes introduction of at least one kaolin-bearing compound into combustion zone or into furnace or boiler flue gas stream before flue gas gets into SCR-system, and realisation of spontaneous reaction of at least one kaolin-bearing compound with any gaseous compounds of potassium, and/or sodium, or potassium- and/or sodium-containing compounds, present in combustion zone or in flue gas, before flue gas gets into SCR-system. Method makes it possible to reduce poisoning and pollution of SCR-catalyst.
EFFECT: invention relates to method for increasing active service term of SCR-catalyst with simultaneous regulation of mercury in gas.
18 cl, 1 dwg
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