Reactivation of hydrotreating catalyst by operating at a tempera

Details Reactivation of hydrotreating catalyst by operating at a tempera Reactivation of hydrotreating catalyst by operating at a tempera

1976-08-23

1977-09-13

Garvin, Patrick P.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

208 27, 208264, 252416, 252419, B01J 2394, C10G 4302, C10G 2302

Patent

active

040480941

ABSTRACT:
A method for reactivating the catalyst used in the mild hydrotreating of petroleum crude scale wax comprises contacting the catalyst with the feedstream at a temperature in excess of the normal operating temperature for the particular feedstream for a time sufficient to reactivate the catalyst and produce effluent having satisfactory color and stability characteristics. Operation at a temperature in excess of the normal operating temperature may follow conventional air-stream catalyst regeneration.

REFERENCES:
patent: 2813835 (1957-11-01), Nozaki
patent: 2963419 (1960-12-01), Holm et al.
patent: 3076755 (1963-02-01), Stark et al.
patent: 3089841 (1963-05-01), Berkowitz et al.
patent: 3228875 (1966-01-01), Demeester
patent: 3532619 (1970-10-01), Rees et al.
patent: 3565820 (1971-02-01), Loons, Jr. et al.
patent: 3953321 (1976-04-01), Ganster et al.

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