| 摘要 |
A process for regeneration of cracking catalyst while minimizing NOX emissions is disclosed. A Group IIIB based deNOx additive is present in an amount and in a form which reduces NOX emissions. Relatively small amounts of lanthanum or yttrium oxides,or lanthanum titanate, preferably impregnated on a separate support are effective to reduce NOX produced in the regenerator. The additive converts NOX to nitrogen even when Pt CO combustion promoter and some excess oxygen are present in the regenerator. |
