Mineral oils: processes and products – Chemical conversion of hydrocarbons – Cracking
Patent
1998-02-12
2000-08-08
Griffin, Walter D.
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Cracking
208113, 208121, 208152, 208161, C10G 1102
Patent
active
060997214
ABSTRACT:
A process for use of magnetic separation to remove non-magnetic particles from FCC catalyst is disclosed. A stream of circulating catalyst from a fluidized catalytic cracking (FCC) unit is charged to a magnetic separator. The catalyst is magnetically fractionated into at least three fractions, a high-metals fraction which is discarded, an intermediate-metals content fraction which is directly recycled to the FCC unit, and an inert, relatively magnetic metals-free fraction which is also discarded. Preferably, the high-metals fraction is immediately mixed with the inert, low-metals fraction, and the combined high-metals/inert fraction is pneumatically transmitted together to a spent catalyst storage facility for disposal.
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Goolsby Terry L.
Moore Howard F.
Doan Tung
Griffin Walter D.
The M.W. Kellogg Company
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