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Additive for reducing NOx emissions from flue gas of FCC units.
Additive for reducing NOx emissions from flue gas of FCC units.
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机译：用于减少FCC装置烟道气中NOx排放的添加剂。
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摘要
Additives for the reduction of NOx emissions from the flue gas of FCC units, the process to reduce NOx emissions during fluid catalytic cracking, and the process of FCC.Are described additives being incorporated at 0.1 to 10.0% by weight relative to the total inventory of catalyst in an FCC unit and useful for reducing NOx emissions from the flue gases of processes of FCC additives comprising 5 to 40% by weight of a particle makes Of a ZSM - 5 zeolites high SAR about 95 to 60% by weight of a porous matrix of silica alumina.40 - 60% of the sites of zeolites are exchanged with Ni or Co, calcined and then the remaining sites of zeolites are exchanged with copper so as to obtain the desired particle. The additive is stable under normal conditions of FCC and does not alter the activity and the selectivity of FCC catalyst. Phosphorus and rare earth can also be incorporated into the additive.
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