PETR 12 |
| Refiners commonly employ CO combustion promoter additives in their FCC units. These have typically been Pt based, due to the effectiveness of that metal in catalyzing the CO oxidation reaction. However, an undesirable side effect of employing such promoters is an increase of NOx emissions from the regenerator. Because of this, there is a continuing interest in improved non-Pt CO combustion promoters, designed to provide comparable CO combustion activity but at a lower NOx penalty relative to Pt. Several developmental additives are studied here, investigating the effects of metal(s) choices and oxide support. Lab results indicate that these new additives can significantly lower the amount of NOx increase at comparable or even better CO oxidation levels compared to Pt additives. Preliminary commercial trials corroborate these results on the industrial scale. |
|
7th International Symposium on Advances in Fluid Cracking Catalysts (FCCs)
8:00 AM-12:00 PM, Sunday, 10 September 2006 Palace -- Telegraph Hill, Oral
Division of Petroleum Chemistry |