Mineral oils: processes and products – Chemical conversion of hydrocarbons – Cracking
Patent
1983-08-23
1985-03-12
Gantz, Delbert E.
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Cracking
208120, 502 34, 502521, C10G 1100
Patent
active
045043795
ABSTRACT:
A method for passivating metal contaminants present in a hydrocarbon feedstock which become deposited on cracking catalyst is described. The method is directed at passing the cracking catalyst through a passivation zone having a reducing atmosphere maintained at an elevated temperature. The reducing atmosphere comprises a process reducing gas stream which has been passed through a guard bed adapted to selectively remove an unsaturated hydrocarbon prior to the process reducing gas being added to the passivation zone.
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Schucker Robert C.
Stuntz Gordon F.
Exxon Research and Engineering Co.
Gantz Delbert E.
Mazer Edward H.
North Robert J.
Prezlock Cynthia A.
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