FCC additive for partial and full burn NOx control
AssigneeEngelhard Corporation
InventorDavid Matheson Stockwell
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Abstract
Ammoxidation catalysts have been found effective for the reduction of emissions of NOx and NOx precursors during FCC catalyst regeneration.
Claims19
A process for regenerating FCC catalysts in an FCC regenerator for reducing coke content of the FCC catalyst with a reduced amount of NOx, or NOx precursor emissions in the FCC regenerator flue gas subsequent to FCC cracking of a hydrocarbon feedstock, comprising directing an FCC catalyst from a catalytic cracking zone to an FCC regenerator to reduce said coke content on said FCC catalyst and adding an ammoxidation catalyst composition to said FCC regenerator.
In a process for cracking a hydrocarbon feed in a catalytic cracking zone in the presence of an FCC catalyst and regenerating said FCC catalyst in a regenerator, the improvement comprising directing said FCC catalyst to said regenerator to reduce coke content thereon and reducing amounts of NOx, or NOx precursor emissions in the regenerator flue gas by directing an ammoxidation catalyst composition to the regenerator.
A NOx emission reduction catalyst composition consisting essentially of:
- a metal additive of FeSbM, wherein M is selected from Mg, Mn, Mo, Ni, Sn, V and Cu, and a metal oxide support carrier containing said metal additive, wherein the metal additive comprises 5 to 15 wt % as oxide of said catalyst.
Dependencies are inferred from the claim text.