Process for regenerating a spent resid hydroprocessing catalyst

Details Process for regenerating a spent resid hydroprocessing catalyst Process for regenerating a spent resid hydroprocessing catalyst

1992-10-02

1994-01-04

Konopka, Paul E.

Catalyst, solid sorbent, or support therefor: product or process

Regenerating or rehabilitating catalyst or sorbent

Gas or vapor treating

208216R, 208251H, 208254H, 502 41, 502 49, 502521, B01J 2020, B01J 3834, B01J 3820, C10G 4516

Patent

active

052759903

ABSTRACT:
A method is provided for regenerating a molecular sieve-free resid hydroprocessing catalyst for use with an ebullated bed reaction process comprising at least one hydrogenation metal and at least one Group IIA metal deposited on an inorganic oxide support wherein the catalyst contains a pore volume of pores having a diameter greater than 1200 Angstroms of at least 0.05 cc/gm. The method comprises the steps of contacting the molecular sieve-free resid hydroprocessing catalyst with a contaminant metal-containing hydrocarbon feedstream in a first contacting step at conditions sufficient to deposit contaminant metals and coke onto the catalyst; and contacting the coke-deactivated, contaminant metal-containing, molecular sieve-free catalyst with an oxygen-containing gas in a second contacting step at oxidation conditions sufficient to remove a substantial amount of the coke from the coke-deactivated, contaminant metal-containing, molecular sieve-free catalyst. The loss on attrition of the regenerated molecular sieve-free resid hydroprocessing catalyst after the second contacting step is less than 10 weight percent fines per day calculated based on a regeneration temperature of about 900.degree. F.

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