Hydrocracking process with reactivated catalyst

Details Hydrocracking process with reactivated catalyst Hydrocracking process with reactivated catalyst

1976-09-16

1978-08-15

Gantz, Delbert E.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

252412, 252466PT, C10G 1302, B01J 2912

Patent

active

041070313

ABSTRACT:
Deactivated Group VIII noble metal-Y zeolite hydrocracking catalysts are reactivated by oxidative combustion to remove coke deposits, followed by treatment with aqueous ammonia to redistribute agglomerated noble metal, followed by calcination in a critical temperature range between about 600.degree. and 850.degree. F. The low-temperature calcination results in reactivated catalysts of improved activity, particularly for hydrocracking feedstocks substantially free of nitrogen compounds.

REFERENCES:
patent: 3644200 (1972-02-01), Young
patent: 3692692 (1972-09-01), Ward et al.
patent: 3781199 (1973-12-01), Ward
patent: 3835028 (1974-09-01), Ward et al.
patent: 3899441 (1975-08-01), Hansford
patent: 3943051 (1976-03-01), Ward
patent: 4002575 (1977-01-01), Ward
patent: 4055482 (1977-10-01), Robson

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