| 摘要 |
<p>Oxides of nitrogen (NOX) emissions from an FCC regenerator are reduced by operating the regenerator in partial CO burn mode and controlled turbulent/laminar flow processing of the flue gas. Partial CO burn FCC catalyst regeneration produces flue gas with CO and NOX precursors. Air is added to a turbulent flow reactor such as a flue gas transfer line where most NOX precursors are homogeneously converted while leaving some CO unconverted. A downstream CO boiler thermally converts this unconverted CO. NOX emissions are less than would be experienced using a like amount of air injection to a conventional CO boiler.</p> |
