Although nitrogen oixdes (NO_x) batement by reburning or secondary fuel addition has been demonstrated in the field,its application has heretofore been reserved primiarily for overall fuel-rich or reducing ocnditions in th rburning zone.COntroary to predictions by detailed kinetic modeling of premixed systems.,the unmixed environemtns oftne present in large full-scale units allow substntial No_x reduction under overall fuel-lean conditions in the reburning zone.
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