Fluidized catalytic cracking process utilizing a C3-C4 paraffin-rich co-feed and mixed catalyst system with selective reactivation of the medium pore silicate zeolite component thereof

Patent · Tue Sep 05 04:00:00 EDT 1989

OSTI ID:7025739

Herbst, J A; Owen, H; Schipper, P H

This patent describes a catalytic cracking process featuring at least one riser reactor, at least one stripping unit and at least one regenerator. It comprises: catalytically cracking a C/sub 3/-C/sub 4/ paraffin-rich feed in the lower section of the riser wherein the catalyst in the lower section of the riser consists of a second component of a mixed catalyst system; cracking a heavy hydrocarbon feed in an upper section of the riser in the presence of both the first and second component of the mixed catalyst system; separating particles of spent first catalyst component from particles of second catalyst component in the stripping unit; stripping the separated particles of first catalyst component; conveying stripped, spent first catalyst component to the regenerator, the catalyst undergoing regeneration therein; conveying regenerated first catalyst component to the upper section of the riser; conveying stripped or non-stripped separated particles of second catalyst component to a reactivation zone, the catalyst undergoing reactivation therein; and conveying reactivated second catalyst component to the lower section of the riser.

• Assignee: Mobil Oil Corp., New York, NY
• Patent Number(s): US 4863585
• Application Number: PPN: US 7148199A
• OSTI ID: 7025739
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
023000 -- Petroleum-- Properties & Composition
10 SYNTHETIC FUELS
100200 -- Synthetic Fuels-- Production-- (1990-)
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ALKANES
ALKENES
CATALYSTS
CATALYTIC CRACKING
CATALYTIC EFFECTS
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
CHEMICAL REACTORS
CRACKING
DECOMPOSITION
DISPERSIONS
FUELS
GASOLINE
HYDROCARBONS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
LIQUID FUELS
MATERIALS
MINERALS
MIXTURES
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PARAFFIN
PETROLEUM PRODUCTS
PYROLYSIS
THERMOCHEMICAL PROCESSES
WAXES
ZEOLITES