Process for the catalytic cracking of feedstocks containing high levels of nitrogen

Patent · Tue Mar 07 04:00:00 EST 1989

OSTI ID:6121206

Scherzer, J

A process is described for the catalytic cracking of a hydrocarbon feedstock containing between about 0.25 and about 0.80 weight percent total nitrogen, calculated as the element. It consists of contacting the feedstock with a cracking catalyst under cracking conditions in the substantial absence of added molecular hydrogen in a cracking zone to convert components of the feedstock into lower molecular weight constituents, wherein the cracking catalyst has a surface area of at least 150 m/sup 2//gm and comprises between about 25 weight percent and about 40 weight percent of a rare earth exchanged Y zeolite dispersed in a matrix comprising a clay and a synthetic silica-alumina component. The weight ratio of silica-to-alumina is greater than or equal to about 0.50 and wherein individual concentrations of nickel and vanadium in the hydrocarbon feedstock are less than about 1.0 ppmw.

• Assignee: Union Oil Co. of California, Los Angeles, CA
• Patent Number(s): US 4810369
• OSTI ID: 6121206
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CATALYSTS
CATALYTIC CRACKING
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
CLAYS
CRACKING
DECOMPOSITION
ELEMENTS
HYDROCARBONS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
MATERIALS
METALS
MINERALS
NICKEL COMPOUNDS
NITROGEN COMPOUNDS
ORGANIC COMPOUNDS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PYROLYSIS
RARE EARTHS
SILICA
SILICON COMPOUNDS
SILICON OXIDES
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
VANADIUM COMPOUNDS
ZEOLITES