Multistage integrated process for upgrading olefins

Patent · Tue Mar 19 04:00:00 EST 1991

OSTI ID:5184551

Harandi, M N

This patent describes a continuous multi-stage process for increasing octane quality and yield of liquid hydrocarbons from an integrated fluidized catalytic cracking unit and olefins oligomerization reaction zone. It comprises: contacting heavy hydrocarbon feedstock in a primary fluidized bed reaction stage with cracking catalyst comprising particulate solid large pore acid aluminosilicate zeolite catalyst at conversion conditions to produce a hydrocarbon effluent comprising gas containing C{sub 2}-C{sub 6} olefins intermediate hydrocarbons in the gasoline and distillate range, and cracked bottoms; regenerating the primary stage zeolite cracking catalyst in a primary stage regeneration zone and returning at least a portion of the resulting regenerated zeolite cracking catalyst to the primary reaction stage; withdrawing another portion of the catalyst from the regeneration zone and adding fresh makeup catalyst thereto separating primary stage effluent to recover olefinic gas containing C{sub 2}-C{sub 6} olefins; reacting at least a portion of the olefinic gas in a secondary fluidized bed reactor stage in contact with a closed fluidized bed of acid zeolite catalyst particles.

• Assignee: Mobil Oil Corp., New York, NY (United States)
• Patent Number(s): US 5000837; A
• Application Number: PPN: US 7-339466
• OSTI ID: 5184551
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
ALKANES
ALKENES
ALUMINIUM COMPOUNDS
ALUMINIUM SILICATES
CATALYSTS
CATALYTIC CRACKING
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
HYDROCARBONS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
MATERIALS
MINERALS
OCTANE
OIL YIELDS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PROCESSING
PYROLYSIS
REGENERATION
SILICATE MINERALS
SILICATES
SILICON COMPOUNDS
THERMOCHEMICAL PROCESSES
YIELDS
ZEOLITES