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1. 发明授权

US07914666B1 Low NOx FCC catalyst regeneration process 有权
标题翻译：低NOx FCC催化剂再生过程
公开(公告)号：US07914666B1
公开(公告)日：2011-03-29
申请号：US11540175
申请日：2006-09-29
申请人： Robert Mehlberg , Frank Rosser, Jr. , Zhihao Fei , Carl Stevens
发明人： Robert Mehlberg , Frank Rosser, Jr. , Zhihao Fei , Carl Stevens
IPC分类号： C10G11/18
CPC分类号： C10G11/182
摘要： An FCC process producing lower NOx emissions during regeneration by using excess oxygen levels at less than or equal to about 0.5 mol-% and a plenum temperature above about 730° C. (about 1350° F.). The process may further include limiting the Pt content in the catalyst to less than or equal to about 0.5 ppm. NOx emissions, NO to NO2, produced through this process may be equal to or less than 25 ppmv. The process may also include adjusting the metal content of the feedstock for such metals as antimony, nickel, or vanadium. Additional variables for reducing NOx emissions that may be used in conjunction with this process may include increasing the flue gas residence time, injecting NH3 into the flue gas, adding or using NOx-reducing catalysts, increasing stripping of the catalyst, and increasing the catalyst zeolite to matrix ratio.
摘要翻译： FCC方法在再生期间通过使用小于或等于约0.5mol％的过量氧气浓度和高于约730℃（1350°F）的增压室产生较低的NOx排放。该方法还可以包括将催化剂中的Pt含量限制为小于或等于约0.5ppm。通过该过程产生的NOx排放NO，NO2可以等于或小于25ppmv。该方法还可以包括调整诸如锑，镍或钒等金属的原料的金属含量。用于减少可能与该方法结合使用的NOx排放的附加变量可包括增加烟道气停留时间，将NH 3注入烟道气中，添加或使用NOx还原催化剂，增加催化剂的汽提和增加催化剂沸石到矩阵比。

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