Method and the system for reducing emission of ammonia forming from reacting substance in non-catalytic selective reduction of nitrogen oxides in the power boiler combustion gases and the power boiler combustion with such a system

摘要

the subject invention is lowering ammonia emissions resulting from the administration of the reagent selective non catalytic reduction (sncr) of nitrogen oxides in the exhaust gas boiler energy (k), in which the reagent is supplied to the boiler in or behind the last in the direction of exhaust flow rural ahem dopalaju0105cego air supply, which is characterized by thethat includes the provision of a stream of dopalaju0105cego (d) unreacted reagent sncr carrying oxygen, preferably the air stream in the zone (from) combustion chamber (ks) and / or the combustion (c1, mc, c2) between the provision of sncr reagent and the place where the temperature exhaust gas drops to 500u00b0c.the subject of the invention is also a system reducing ammonia emissions resulting from the administration of the reagent selective non catalytic reduction (sncr) of nitrogen oxides in the exhaust gas boiler energy (k), characterized by that contains measures for stream factor dopalaju0105cego (d ) unreacted reagent sncr carrying oxygen, preferably the air stream.the (from) of the combustion chamber (ks) and / or the combustion (c1, mc, c2) between the provision of sncr reagent contained in or behind the last in the direction of exhaust flow area of the air supply dopalaju0105cego, and the place where the exhaust gas temperature drops to 500u00b0c.the subject invention is moreover energy boiler (k) containing a system of reducing ammonia emissions resulting from the administration of the reagent selective non catalytic reduction (sncr) nitrogen oxides.