FCC REGENERATOR IN PARTIAL CO BURN WITH DOWNSTREAM AIR ADDITION
    3.
    发明公开
    FCC REGENERATOR IN PARTIAL CO BURN WITH DOWNSTREAM AIR ADDITION 失效
    与部分CO燃烧和下游说谎AIR SUPPLY EDDY床催化剂再生

    公开(公告)号:EP0853652A1

    公开(公告)日:1998-07-22

    申请号:EP96927350.0

    申请日:1996-08-09

    IPC分类号: B01D53 C10G11

    CPC分类号: C10G11/182 B01D53/8625

    摘要: Oxides of nitrogen (NOx) emissions from an FCC regenerator (30) are reduced by operating the regenerator (30) in partial CO burn mode to produce flue gas with more CO than O2 and with NOx precursors. This flue gas is then enriched with controlled amounts of oxygen and charged over catalyst, preferably Group VIII noble metal on a support, to convert most NOx precursors to nitrogen. Flue gas may then be charged to a CO boiler (89). Eliminating more than 90 % of NOx emissions is possible by operating the FCC regenerator (30) in partial CO burn mode, then adding air and catalytically converting NOx precursors at substoichiometric conditions. Conversion of NOx if formed in the regenerator (30) may be achieved as well.