Oxides of nitrogen (NO.sub.x) emissions from an FCC regenerator are reduced by operating the regenerator in partial CO burn mode and adding substoichiometric, or just stoichiometric air to the flue gas. Much CO and most NO.sub.x and NO.sub.x precursors are thermally converted at 2000.degree.-2900.degree....http://www.google.es/patents/US5372706?utm_source=gb-gplus-sharePatente US5372706 - FCC regeneration process with low NO.sub.x CO boiler
FCC regeneration process with low NO.sub.x CO boiler
