Single riser fluidized catalytic cracking process utilizing a C/sub 3-4/ paraffin-rich CO-feed and mixed catalyst system

Patent · Tue May 02 04:00:00 EDT 1989

OSTI ID:5928951

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

A catalytic cracking process is described, employing a single riser reaction zone having a lower and an upper section, a stripping zone in which entrained hydrocarbon material is removed from catalyst and a regeneration zone in which spent cracking catalyst is regenerated, the process comprising: (a) thermally cracking a C/sub 3/-C/sub 4/ paraffin-rich feed in the lower section of the riser reaction zone to provide light olefins for conversion to products including aromatics, in the upper section of the riser; and (b) catalytically cracking a heavy hydrocarbon feed selected from the group consisting of gas oil and resid in the upper section of the riser reaction zone in the presence of a mixed catalyst composition comprising a first catalyst component and a second catalyst component wherein the first catalyst component is at least one selected from the group consisting of an amorphous cracking catalyst and a large pore crystalline zeolite cracking catalyst and, wherein the second catalyst component is at least one selected from the group consisting of zeolite Beta and a shape selective medium pore crystalline silicate zeolite, to provide gasoline boiling range components, there being at least one physical characteristic of particles of the second catalyst component which permits particles of second catalyst component to remain in the upper section of the riser reaction zone for a longer average period of time than particles of first catalyst component the physical characteristic selected from the group consisting of size, density and shape.

• Assignee: Mobil Oil Corp., New York, NY
• Patent Number(s): US 4826586
• OSTI ID: 5928951
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
ALKANES
ALKENES
CATALYSTS
CATALYTIC CRACKING
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
ENERGY SOURCES
FOSSIL FUELS
FUELS
GAS OILS
HYDROCARBONS
ORGANIC COMPOUNDS
PETROLEUM
PETROLEUM FRACTIONS
PETROLEUM PRODUCTS
PETROLEUM RESIDUES
PYROLYSIS
THERMAL CRACKING
THERMOCHEMICAL PROCESSES