Kotler V.R., Open JSC “VTI”

The second method of cleaning flue gases from NOx, widely spread in the global energy sector and tested in Russia (TP-87 boilers at Tolyatti CHPP) is also a selective (i.e., using ammonia or urea), but non-catalytic reduction of NO to molecular nitrogen. The reduction process takes place without a catalyst in the temperature range, which depends on the reagent use. This approximate range is from 850 to 1100°C.