Kenneth George Tasker

US Patent:

47692197, Sep 6, 1988

Filed:

Apr 9, 1987

Appl. No.:

7/036767

Inventors:

Kenneth G. Tasker - Yardley PA
John D. Milligan - Little Silver NJ

Assignee:

HRI, Inc. - Gibbsboro NJ

International Classification:

F27B 1508
B01J 3800

US Classification:

422144

Abstract:

A catalyst rejuvenation vessel assembly for treating particulate used oil-coated catalysts to provide a rejuvenated catalyst material is disclosed. A pressurizable vertically-oriented vessel assembly has inlet and outlet openings for the catalyst and washing fluids, and has a removable lower sub-assembly head portion which contains a conical shaped grid unit located therein. The vessel assembly is arranged to permit solvent washing, vacuum drying and acid treatment and gas drying of the used catalyst in a bed supported above the conical grid, by upward flow and recycle of the washing liquids and fluidization of the catalyst. Following rejuvenation of the catalyst, it is withdrawn form the vessel downwardly through the conical shaped grid and out through a central withdrawal conduit containing a slide valve unit for further processing or use as desired.

US Patent:

48638846, Sep 5, 1989

Filed:

May 25, 1988

Appl. No.:

7/199872

Inventors:

Kenneth G. Tasker - Yardley PA
John D. Milligan - Little Silver NJ

Assignee:

HRI, Inc. - Lawrenceville NJ

International Classification:

B01J 3860
B01J 3856

US Classification:

502 27

Abstract:

Method for treating particulate used oil-coated catalysts to provide a rejuvenated catalyst material in a rejuvention vessel assembly. The pressurizable vertically-oriented vessel assembly has inlet and outlet openings for the catalyst and washing fluids, and has a removable lower sub-assembly head portion which contains a conical shaped grid unit located therein. The vessel assembly is arranged to permit solvent washing, vacuum drying and acid treatment and gas drying of the used catalyst in a bed supported above the conical grid, by upward flow and recycle of the washing liquids and fluidization of the catalyst. Following rejuvenation of the catalyst, it is withdrawn from the vessel downwardly through the conical shaped grid and out through a central withdrawal conduit containing a slide valve unit for further processing or use as desired.