Addition of magnetic moieties in fluid bed hydrocarbon...

Details Addition of magnetic moieties in fluid bed hydrocarbon... Addition of magnetic moieties in fluid bed hydrocarbon...

C - Chemistry, Metallurgy

10

G

C10G 11/18 (2006.01) B01J 8/42 (2006.01)

Patent

CA 2072636

By continuously or intermittently adding amounts of magnetically active moieties, e.g. iron compounds, over time so that the moiety deposits on a catalyst or sorbent in a fluid catalytic cracker or similar circualting hydrocarbon conversion unit, older catalyst, being more magnetic, can be readily separated from catalyst which has been in the system a shorter time. Separation is readily accomplished by passing the catalyst and/or sorbent through a magnetic field and discarding the more magnetic 50 % by wt. or more preferably 20 % by wt., while recycling the remainder back to the hydrocarbon conversion unit.

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