PROCESS FOR THE PRODUCTION OF LUBRICATING OILS

• US 3,617,482 A
• Filed: 11/10/1969
• Issued: 11/02/1971
• Est. Priority Date: 11/10/1969
• Status: Expired due to Term

• Current Assignee: Clark J. Egan
• Original Assignee: Clark J. Egan
• Inventors: Egan, Clark J.
• Primary Examiner(s): Gantz, Delbert E.
• Assistant Examiner(s): Schmitkons, G. E.
• Application Number:
  US04/875,496
• Time in Patent Office: 722 Days
• Field of Search: 208/78,59
• US Class Current: 208/59
• CPC Class Codes: C10G 2400/10 Lubricating oil
• CPC Class Codes: C10G 65/00 Treatment of hydrocarbon oils by two or more hydrotreatment processes only

Abstract

Lubricating oil production process comprising hydrocracking in a first zone a hydrocarbon oil feed in the presence of a hydrocracking catalyst comprising silica and alumina and containing more alumina then silica, hydrocracking in a second zone a second hydrocarbon oil feed, together with a waxcontaining hydrocarbon fraction from said first zone, in the presence of a hydrocracking catalyst comprising silica and alumina and containing more alumina than silica, and recovering from the effluent of said second zone at least one light neutral oil having a VI above 100.

Claims

2. The process of claim 1 wherein said wax is removed from the effluent of said first zone by solvent dewaxing.

3. The process of claim 2 wherein following said dewaxing the wax-free portion of said effluent of said first zone is stabilized to ultraviolet light.

4. The process of claim 1 wherein said light neutral oil recovered from the effluent of said second zone is stabilized to ultraviolet light.

5. The process of claim 1 wherein the asphaltene content of the hydrocarbon feeds to each of said zones is less than 1 weight percent.

6. The process of claim 5 wherein said second oil feed has an average boiling point below the average boiling point of said first oil feed.

7. The process of claim 6 wherein in each of said zones at least 50 volume percent of the hydrocarbon feed to the zone is hydrocracked to materials boiling below the initial boiling point of said hydrocarbon feed.

8. The process of claim 7 wherein said hydrocracking catalyst in each of said zones comprises a hydrogenating component selected from Group VI and Group VIII metals and compounds of said metals.