Process for demetallization of heavy crudes using a catalyst having high metal retention capacity and good stability
This patent describes a process for the hydrotreatment of heavy crudes and residues containing high levels of metals, sulphur, asphaltenes and Conradson carbon. This process consists of providing a catalyst formed by impregnating an alumina carrier in an aqueous solution containing a component selected from the metallic elements of Group VIB of the Periodic Table, a component selected from the metallic elements of Group VIII of the Periodic Table and a phosphorus oxide component and contacting the heavy crude with the catalyst in a hydrotreatment zone in the presence of hydrogen so as to convert the heavy crude into a light hydrocarbon. The phosphorus oxide is added in substantially stoichiometric quantities with respect to the metallic elements of Group VIB of the Periodic Table such that the ratio of phosphorus oxide to the oxide of the metallic elements of Group VIB on the surface of the catalyst is substantially unity. The catalyst has a surface area of between 120 to 400 m/sup 2//g and a total pore volume of between 0.5 to 1.2 cc/g wherein between 60 and 100% of the total pore volume comprises pores having a diameter of between 60 to 300 A.
- Assignee:
- Intevep, S.A., Caracas
- Patent Number(s):
- US 4579649
- OSTI ID:
- 5622283
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020400* -- Petroleum-- Processing
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
AQUEOUS SOLUTIONS
ASPHALTENES
ASPHALTS
BITUMENS
CARBON COMPOUNDS
CATALYST SUPPORTS
CATALYSTS
CHALCOGENIDES
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
DEMETALLIZATION
DISPERSIONS
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROCRACKING
HYDROGEN
IMPREGNATION
MIXTURES
NONMETALS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PETROLEUM
PETROLEUM FRACTIONS
PETROLEUM RESIDUES
PHOSPHORUS COMPOUNDS
PHOSPHORUS OXIDES
POROSITY
PYROLYSIS
QUANTITY RATIO
SEPARATION PROCESSES
SOLUTIONS
SORPTIVE PROPERTIES
STABILITY
SULFUR CONTENT
SURFACE PROPERTIES
TAR
THERMOCHEMICAL PROCESSES
VISCOSITY