Catalytic cracking process
A specific object of the invention is to provide a process for producing a cat cracked naphtha which can be subsequently hydrorefined without significant loss of octane number. The process comprises recracking a cracked naphtha feed containing about 60% olefins (usually 20% to 40%), over a crystalline aluminosilicate zeolite catalyst to further crack the naphtha and to saturate at least 50% of the olefins, preferably 80% to 100% of the olefins. The cracked naphtha feed is contacted and reacted over the catalyst at temperatures ranging from 800/sup 0/ to 1100/sup 0/F, and at pressures of zero to 50 psig. The reaction should produce significant saturation of the olefins, and hydrodenitrogenation and hydrodesulfurization of the cat naphtha feed. The reaction product should be a low sulfur gasoline suitable for addition to a gasoline blending pool. 15 claims.
- Assignee:
- Exxon Research and Engineering Co.
- Patent Number(s):
- US 4172812
- OSTI ID:
- 5116115
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020400* -- Petroleum-- Processing
ALUMINIUM COMPOUNDS
ALUMINIUM SILICATES
CATALYSTS
CATALYTIC CRACKING
CATALYTIC EFFECTS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
COAL TAR OILS
CRACKING
DECOMPOSITION
DISTILLATES
ENERGY SOURCES
FOSSIL FUELS
FUELS
GASOLINE
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
LIQUID FUELS
MATERIALS
MEDIUM PRESSURE
MINERALS
MIXING
NAPHTHA
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PETROLEUM
PETROLEUM DISTILLATES
PETROLEUM FRACTIONS
PETROLEUM PRODUCTS
PRESSURE DEPENDENCE
PROCESSING
PYROLYSIS
REFINING
SILICATES
SILICON COMPOUNDS
TEMPERATURE DEPENDENCE
THERMOCHEMICAL PROCESSES
VERY HIGH TEMPERATURE
YIELDS
ZEOLITES