Demetalation and desulfurization of oil in separate catalytic zones

Patent · Tue Oct 12 04:00:00 EDT 1976

OSTI ID:7125764

Milstein, D

A two step process is described for hydrodesulfurization of a petroleum oil containing residual hydrocarbon components and metals. The first catalytic zone contains a catalyst consisting of essentially spent catalyst made up of a Group VIB and a Group VIII metal on alumina and originating in the second catalytic zone. The oil and hydrogen are passed over the essentially spent catalyst at a temperature progressively increased from 650/sup 0/F at the start of the run to 800/sup 0/F at the end of the run to yield demetallized oil for passage, along with hydrogen, to the second catalytic zone. The second catalytic zone contains active desulfurization catalyst and serves to desulfurize the oil by a conventional process. The most common catalyst is cobalt molybdate on alumina. (BLM)

• Assignee: Mobil Oil Corp.
• Patent Number(s): US 3985643
• OSTI ID: 7125764
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
CATALYTIC EFFECTS
CHEMICAL REACTIONS
COBALT COMPOUNDS
DEMETALLIZATION
DESULFURIZATION
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUEL OILS
FUELS
HIGH TEMPERATURE
HYDROGENATION
METALS
MOLYBDATES
MOLYBDENUM COMPOUNDS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PETROLEUM
PETROLEUM PRODUCTS
RESIDUAL FUELS
SEPARATION PROCESSES
TRANSITION ELEMENT COMPOUNDS