Roland Menzl

US Patent:

40480941, Sep 13, 1977

Filed:

Aug 23, 1976

Appl. No.:

5/716716

Inventors:

Roland L. Menzl - Hammond IN
P. Donald Hopkins - St. Charles IL

Assignee:

Standard Oil Company (Indiana) - Chicago IL

International Classification:

B01J 2394
C10G 4302
C10G 2302

US Classification:

252414

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.