Process for magnetic beneficiating petroleum cracking catalyst
A process is described for beneficiating a particulate zeolite petroleum cracking catalyst having metal values in excess of 1000 ppm nickel equivalents. The particulate catalyst is passed through a magnetic field in the range of from about 2 Tesla to about 5 Tesla generated by a superconducting quadrupole open-gradient magnetic system for a time sufficient to effect separation of said catalyst into a plurality of zones having different nickel equivalent concentrations. A first zone has nickel equivalents of about 6,000 ppm and greater, a second zone has nickel equivalents in the range of from about 2000 ppm to about 6000 ppm, and a third zone has nickel equivalents of about 2000 ppm and less. The zones of catalyst are separated and the second zone material is recycled to a fluidized bed of zeolite petroleum cracking catalyst. The low nickel equivalent zone is treated while the high nickel equivalent zone is discarded. 1 figures.
- DOE Contract Number:
- W-31109-ENG-38
- Assignee:
- Univ. of Chicago, Chicago, IL (United States)
- Patent Number(s):
- A; US 5250482
- Application Number:
- PPN: US 7-933497
- OSTI ID:
- 5324445
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020400* -- Petroleum-- Processing
CATALYSTS
CATALYTIC CRACKING
CHEMICAL REACTIONS
CONCENTRATION RATIO
CONCENTRATORS
CRACKING
DECOMPOSITION
ELEMENTS
INDUSTRIAL PLANTS
MAGNETIC SEPARATORS
METALS
NICKEL
PETROLEUM REFINERIES
PYROLYSIS
REGENERATION
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENTS