FCC processing scheme with multiple risers

Patent · Tue Aug 19 04:00:00 EDT 1986

OSTI ID:5301885

Krambeck, F J; Pereira, C J

A method is described for converting hydrocarbon to gasoline in a two riser system comprising: contacting fresh hydrocarbon feed of poor crackability in a first riser with spent catalyst from a second riser to form cracked products and a coked catalyst; withdrawing the cracked products from the first riser to separate a gasoline and a distillate fraction from a higher boiling point material; regenerating the coked catalyst from the first riser; feeding the higher boiling point material to the second riser; feeding the regenerated catalyst to the second riser to further convert the high boiling point material into gasoline; and separating the spent catalyst from the second riser and feeding only the spent catalyst to the first riser.

• Assignee: Mobil Oil Corp., New York, NY
• Patent Number(s): US 4606810
• OSTI ID: 5301885
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
BOILING POINTS
CATALYSTS
CATALYTIC CRACKING
CHEMICAL PREPARATION
CHEMICAL REACTIONS
CHEMICAL REACTORS
CRACKING
DECOMPOSITION
FLUIDIZED BEDS
FUELS
GASOLINE
HYDROCARBONS
LIQUID FUELS
ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
PHYSICAL PROPERTIES
PYROLYSIS
REGENERATION
SYNTHESIS
THERMOCHEMICAL PROCESSES
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE