Method for reduction of nitrogen oxides and carbon monoxide in combustion chambers of water boilers and steam boilers, particularly the stoker-fired boilers and the system for reduction of nitrogen oxides and carbon monoxide in combustion chambers of water boilers and steam boilers, particularly the stoker-fired boilers

摘要

The method of limiting the formation and /or reduction of nitrogen oxides is that to the combustion chamber in the opposite direction to the main direction,the main exhaust stream flowing through the combustion chamber, is injected with a process gas or in a subsequent process gas with a reagent of 30 to 180 m /s advantageous 135 m /s,where the injection points are located at a distance of 0,5 the depth of the combustion chamber from the axis of the front panel tubes on one or three levels, the highest level being at the height of the lower edge of the boiler overflow.The NOx reduction mode system contains process gas injection lances (6), reagent injection lances (7), combustion chamber (10), process gas pump (11),Process gas fan (12), measuring system built into process gas collector (13), control -off element built into process gas collector (14),reagent tank (15), reagent pump (16), measurement system built into the reagent installation (17), control -off element built into the reagent installation (18),the launch of a central injection of the reagent into the process gas (19).