Method for suppressing the poisoning effects of contaminant metals on cracking catalysts in fluid catalytic cracking

Patent · Tue Nov 15 00:00:00 EST 1988

OSTI ID:6467351

Ramamoorthy, P; Sobrante, E L; Krishna, A S

This patent describes a process for the conversion of hydrocarbon oil feed which comprises contacting a hydrocarbon feed containing metal contaminants including nickel, vanadium and iron with a cracking catalyst in a fluid catalytic cracking system. The improvement consists of: (a) analyzing the hydrocarbon feed for nickel equivalents (defined as (nickel + 0.2 vanadium + 0.1 iron)) and determining the quantity of nickel equivalents in the hydrocarbon feed, and (b) introducing a composition for mitigating or suppressing the contaminants-caused poisoning of the catalyst into the catalytic cracking system, the composition selected from the group consisting of bismuth, bismuth compounds and mixtures thereof, in a weight ratio of introduced bismuth composition to nickel equivalents of between about 0.01:1 and about 1:1.

• Assignee: Chevron Research Co., San Francisco, CA
• Patent Number(s): US 4784752
• OSTI ID: 6467351
• Resource Relation: Patent File Date: Filed date 5 May 1987
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
CATALYSTS
PROCESSING
IRON
DEACTIVATION
NICKEL
PETROLEUM
CATALYTIC CRACKING
VANADIUM
IMPURITIES
METALS
QUANTITATIVE CHEMICAL ANALYSIS
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
PYROLYSIS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENTS
020400* - Petroleum- Processing