Cracking catalyst activity maintenance for catalytic cracking pr

Details Cracking catalyst activity maintenance for catalytic cracking pr Cracking catalyst activity maintenance for catalytic cracking pr

1977-08-22

1978-07-04

Gantz, Delbert E.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208164, 252415, 252417, 252449, 252455R, C10G 1104, B01J 824, B01J 2912

Patent

active

040986780

ABSTRACT:
The activity maintenance of silica containing catalysts used in catalytic cracking operations is improved by the addition to the system of a silica containing compound or mixture which is in a form and in an amount that will readily vaporize in the steam added to or formed in the process. By the method of operation, the refiner is able to realize substantial savings in the amount of catalyst make-up required to maintain a given activity level in the unit.

REFERENCES:
patent: 2688401 (1954-09-01), Schmitkons et al.
patent: 3170865 (1965-02-01), Allen et al.
patent: 3498908 (1970-03-01), Frankovich
W. G. Schlaffer et al., (Shell Dev. Co.) "Aging of Si-Al Cracking Catalyst" J. Phys. Chem. 61, 714-722 (1957).
L. G. Huggett et al., "ICI Symposium on Steam Reforming" (1964).

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