Process for regenerating spent heavy hydrocarbon hydroprocessing catalyst

Patent · Tue Feb 11 04:00:00 EST 1992

OSTI ID:5291268

Clark, F T; Hensley, Jr, A L

This patent describes a process for regenerating metals contaminated heavy hydrocarbon hydroprocessing catalyst with a total contaminant metals buildup of greater than about 4 wt.% nickel plus vanadium based on the total weight of fresh catalyst wherein the spent catalyst prior to being deactivated by contact with a hydrocarbon stream possessed at least 0.05 cc/g pore volume in pores having pore diameters greater than about 1200 Angstroms. It comprises: partially decoking the catalyst in an initial coke-burning step wherein the catalyst is contacted with an oxygen-containing gas at a temperature ranging from about 400{degrees}F to about 700{degrees}F; incorporating at least one Group VIB metal with the partially decoked catalyst, such that the partially decoked catalyst contains from about 0.1 to about 20.0 wt.% of the Group VIB metal calculated as the oxide and wt.% of the Group VIB metal calculated as the oxide and based on the fresh weight of the spent catalyst; and decoking the Group VIB metal-containing catalyst in a final coke-burning step wherein the Group VIB metal-containing catalyst is contacted with an oxygen-containing gas at a temperature of about 600{degrees}F to about 1400{degrees}F.

• Assignee: Amoco Corp., Chicago, IL (United States)
• Patent Number(s): A; US 5087596
• Application Number: PPN: US 7-541616
• OSTI ID: 5291268
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
023000 -- Petroleum-- Properties & Composition
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
CATALYSTS
CATALYTIC CRACKING
CHEMICAL REACTIONS
CONTAMINATION
CRACKING
DECOMPOSITION
ELEMENTS
HYDROCARBONS
HYDROCRACKING
METALS
NICKEL
ORGANIC COMPOUNDS
PYROLYSIS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENTS
VANADIUM