A BOILER AND A METHOD FOR NOX EMISSION CONTROL FROM A BOILER

摘要

A boiler (1) comprises an enclosure (2) having at least a supply (3, 4) for fuel and oxidizer and at least a supply (5) for a SNCR reagent. The supply (5) for the SNCR reagent comprises at least a regulation valve (15, 15a, 15b, 15c) for the SNCR reagent. The boiler (1) comprises at least a sensor (17) for measuring information indicative of the N0X concentration over at least one given enclosure cross section (18) . The boiler . (1) comprises a controller (20) connected to the at least a sensor (17) and to the at least a regulation valve (15, 15a,. 15b, 15c), the controller (20) for regulating the SNCR reagent supply according to the measured information indicative of the NOx concentration.