Catalytic cracking process

Patent · Tue Jan 27 04:00:00 EST 1987

OSTI ID:6903549

Lee, F M

A catalytic cracking process is described comprising the steps of: (A) contacting (a) an oil feed stream comprising hydrocarbons having more than ten carbon atoms per molecule with (b) a solid cracking catalyst, under such conditions as to obtain (c) gaseous products comprising hydrogen, paraffins having from 1-4 carbon atoms per molecule and olefins having from 2-4 carbon atoms per molecule and (d) at least one stream of substantially liquid products comprising hydrocarbons having an average molecular weight lower than that of the hydrocarbons in the feed stream; (B) substantially separating the gaseous products from the at least one stream of substantially liquid products and the solid cracking catalyst; (C) treating at least a portion of the separated gaseous product from step B under such conditions as to reduce therein the content of olefins having 2-4 carbon atoms per molecule; (D) recycling and introducing at least a portion of the gaseous product stream having reduced olefin content into the contacting zone of step A where the feed stream is contacted with the solid cracking catalyst, the recycle gaseous product stream comprising hydrogen and the paraffins; (E) repeating steps A through D.

• Assignee: Phillips Petroleum Co., Bartlesville, OK
• Patent Number(s): US 4639308
• OSTI ID: 6903549
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
ALKANES
ALKENES
CATALYSTS
CATALYTIC CRACKING
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
ELEMENTS
ENERGY SOURCES
FLUID FLOW
FOSSIL FUELS
FUELS
GAS FLOW
HYDROCARBONS
HYDROGEN
MOLECULAR WEIGHT
NONMETALS
ORGANIC COMPOUNDS
PETROLEUM
PYROLYSIS
QUANTITY RATIO
RECYCLING
THERMOCHEMICAL PROCESSES
YIELDS