Passivation of cracking catalysts

Details Passivation of cracking catalysts Passivation of cracking catalysts

1979-12-31

1981-07-28

Gantz, Delbert E.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208 52CT, 208120, 252411R, 252415, C10G 916, C10G 1118

Patent

active

042808952

ABSTRACT:
A method for passivating a catalyst utilized to crack hydrocarbon feedstock to lower molecular weight products in a reation zone is disclosed, where the feedstock contains at least two metal contaminants selected from the class consisting of nickel, vanadium and iron and where these contaminants become deposited on the catalyst. The method comprises passing the catalyst from the reaction zone through a reduction zone maintained at an elevated temperature for a time sufficient to at least partially passivate the catalyst.

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Cimbalo et al. "Deposited Metals Poison FCC Catalyst", Oil Gas Journal, pp. 112, 114, 118, 120, 122 (May 15, 1972).

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