Improved octane catalytic cracking process

Improved octane catalytic cracking process

A method for improving the octane rating of products from a catalytic cracking system is disclosed. The method is directed at maintaining the metal contaminant level on the cracking catalyst above about 400 wppm equivalent metal and periodically passing the cracking catalyst through a passivation zo...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: PAFFORD, BERNIE JOHN, BERTSCH, CARL FRANKLIN
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
CHEMISTRY
CRACKING HYDROCARBON OILS
FUELS
LUBRICANTS
METALLURGY
MINERAL WAXES
PEAT
PETROLEUM, GAS OR COKE INDUSTRIES
PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION
RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES
REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS
REFORMING OF NAPHTHA
TECHNICAL GASES CONTAINING CARBON MONOXIDE
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Beschreibung
Zusammenfassung:A method for improving the octane rating of products from a catalytic cracking system is disclosed. The method is directed at maintaining the metal contaminant level on the cracking catalyst above about 400 wppm equivalent metal and periodically passing the cracking catalyst through a passivation zone having a reducing atmosphere maintained at an elevated temperature to passivate the metal contaminant on the cracking catalyst.