Process for the catalytic cracking of nitrogen-containing feedstocks

Patent · Tue Nov 24 04:00:00 EST 1987

OSTI ID:5700556

Occelli, M L

This patent describes a process for the catalytic cracking of a hydrocarbon feedstock containing nitrogen compounds in an amount such that the feedstock contains greater than about 0.08 weight percent total nitrogen, calculated as the element, which process comprises contacting the feedstock in the vapor phase, without first treating the feedstock to remove at least a portion of the nitrogen compounds, with a mixture of a regenerated cracking catalyst and separate particles of a nitrogen scavenger 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. The regenerated cracking catalyst comprises a zeolitic molecular sieve having cracking activity dispersed in a matrix and the nitrogen scavenger comprises a nonzeolitic molecular sieve or a heat stable metal compound selected from the group consisting of magnesium, calcium, zirconium, boron, phosphorus and tungsten compounds, and wherein the concentration of metals in the hydrocarbon feedstock.

• Assignee: Union Oil Co. of California, Los Angeles, CA
• Patent Number(s): US 4708786
• OSTI ID: 5700556
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
ACTIVATION ENERGY
ADSORBENTS
ALKALINE EARTH METALS
BORON
CALCIUM
CATALYSTS
CATALYTIC CRACKING
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
DENITRIFICATION
ELEMENTS
ENERGY
EVAPORATION
HYDROCARBONS
HYDROGEN
HYDROGENATION
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
IRON
MAGNESIUM
MATERIALS
METALS
MINERALS
MOLECULAR SIEVES
NICKEL
NITROGEN COMPOUNDS
NONMETALS
ORGANIC COMPOUNDS
PHASE TRANSFORMATIONS
PHOSPHORUS
PYROLYSIS
SEMIMETALS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENTS
TUNGSTEN
VANADIUM
ZEOLITES
ZIRCONIUM