Single-stage hydrotreating process

Patent · Tue Oct 11 04:00:00 EDT 1988

OSTI ID:6543901

Washecheck, D M; Adams, C T

This patent describes a process for hydrotreating hydrocarbon oils having a tendency to deactivate hydrotreating catalysts by coke formation, the oils selected from the group consisting of (a) oils having a final boiling point greater than about 1000F and containing less than about 2% by weight of heptane asphaltenes, (b) oils having a final boiling point from about 850F to about 1000F and (c) mixtures thereof, which comprises: passing the oils downwardly with a hydrogen-containing gas into a hydrotreating zone over a stacked-bed of two hydrotreating catalysts under conditions to convert greater than about 25% of the sulfur compounds present to H/sub 2/S; the stacked bed comprising an upper bed consisting of about 15-85%v, basis total catalyst, of a high-activity hydrotreating catalyst containing from about 2-4%w nickel, from about 8-15%w molybdenum and from about 1-4%w phosphorus supported on a carrier consisting mostly of alumina, the catalyst having a compacted bulk density of about 0.65-0.95 gm/cc and a surface area greater than about 140 m/sup 2//gm; and a lower bed consisting of about 15-85%v, basis total catalyst, of a high-activity desulfurization catalyst which contains from about 2-4%w cobalt and/or nickel and from about 8-15%w molybdenum and less than about 0.5%w phosphorus supported on a carrier consisting mostly of alumina, the catalyst having a compacted bulk density of about 0.6-0.8 gm/cc and a surface area greater than about 180 m/sup 2//gm; and sepa

• Assignee: Shell Oil Co., Houston, TX
• Patent Number(s): US 4776945
• OSTI ID: 6543901
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
023000 -- Petroleum-- Properties & Composition
ALKANES
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
ASPHALTENES
ASPHALTS
BITUMENS
BOILING POINTS
CATALYSTS
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
DEMETALLIZATION
DESULFURIZATION
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
HEPTANE
HIGH TEMPERATURE
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
HYDROGENATION
METALS
MOLYBDENUM
NICKEL
NONMETALS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PETROLEUM
PHOSPHORUS
PHYSICAL PROPERTIES
SEPARATION PROCESSES
SULFIDES
SULFUR COMPOUNDS
TAR
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENTS
TRANSITION TEMPERATURE