FCC metals passivation additives applied to catalyst
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United States of America Patent
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Oct 26, 1999
Grant Date -
N/A
app pub date -
Jul 9, 1998
filing date -
Jul 11, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process and apparatus for incorporating additives into a circulating inventory of equilibrium catalyst in a fluid catalyst cracking (FCC) unit are disclosed. Hot regenerated catalyst is removed from the FCC regenerator, cooled, optionally subjected to magnetic catalyst separation, and at least a portion of the cooled catalyst is contacted with a solution of an additive material without forming a separated liquid phase. Additive treated catalyst is recycled to the FCC unit, preferably directly into the regenerator.
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