Catalytic cracking process
A process is described which comprises recracking a cracked naphtha feed containing up to about 60%, suitably from about 20 to about 40% olefins, over a crystalline aluminosilicate zeolite catalyst to further crack the naphtha and saturate at least about 50% of the olefins, preferably from about 90 to about 100% of the olefins, based on the weight of the cracked naphtha feed. In a preferred combination a gas oil is catalytically cracked in a first stage to produce a cat cracked naphtha product of high olefin content, and an intermediate boiling component thereof is recracked as a feed in a second stage over a zeolite catalyst to saturate the olefins, and hydrodenitrogenate and hydrodesulfurize the cat cracked naphtha. The recracked cat cracked naphtha is then hydrotreated at low to mild severities and then catalytically reformed (hydroformed) to produce high octane gasoline.
- Assignee:
- Exxon Research and Engineering Co.
- Patent Number(s):
- US 4176049
- OSTI ID:
- 5328429
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020400* -- Petroleum-- Processing
ALKENES
CATALYTIC CRACKING
CHEMICAL REACTIONS
COAL TAR OILS
CRACKING
DECOMPOSITION
DENITRIFICATION
DESULFURIZATION
DISTILLATES
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROCARBONS
HYDROCRACKING
NAPHTHA
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM
PETROLEUM DISTILLATES
PETROLEUM FRACTIONS
PYROLYSIS
THERMOCHEMICAL PROCESSES