METHOD OF DECREASING TOXIC EXHAUST OF NITROGEN OXIDES, AND MONITORING SYSTEM Russian patent published in 2012 - IPC B01D53/56 B01D53/86 

FIELD: process engineering.

SUBSTANCE: invention relates to reduction of nitrogen oxide concentration in gaseous combustion products. Proposed method comprises heating water-containing urea for its gasification by mixing it with heated gas flow to produce gasified reducer flow that comprises ammonium, monitoring urea requirement for every turbine, feeding gasified reducer flow to every turbine for selective catalytic reduction of nitrogen oxides, defining the amount of carrier gas required for preset degree of mixing of gasified reagent with gaseous combustion products, admixing carrier gas to gasified reducer flow for creation catalyst flow for every turbine, and adding catalyst flow by means of ammonium injection screen to gaseous combustion products upstream of catalyst.

EFFECT: efficient use of urea for catalytic reduction of nitrogen oxides.

2 cl, 3 dwg