Fluidized catalyst process for production and hydration of olefins
A continuous multi-stage process is described for increasing octane quality and yield of liquid hydrocarbons from an integrated fluidized catalytic cracking unit and hydration reaction zone comprising: 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 C2-C6 olefins, intermediate hydrocarbons in the gasoline and distillate range, and cracked bottoms; regenerating primary stage zeolite cracking catalyst in a primary stage regeneration zone and returning at least a portion of regenerated zeolite cracking catalyst to the primary reaction stage; reacting an olefinic stream containing at least one iso-olefin with water in a secondary fluidized bed hydration reactor stage in contact with a closed fluidized bed of acid zeolite catalyst particles comprising solid acid zeolite under hydration reaction conditions to effectively convert said isoolefin to alkyl alkanol; adding fresh acid zeolite particles to the secondary stage reactor in an amount sufficient to maintain average equilibrium catalyst particle activity for effective alkanol synthesis reaction without regeneration of the secondary catalyst bed; withdrawing a portion of equilibrium catalyst from the secondary fluidized bed reactor stage; and passing said withdrawn catalyst portion to the primary fluidized bed reaction stage for contact with the petroleum feedstock.
- Assignee:
- Mobil Oil Corp., Fairfax, VA (United States)
- Patent Number(s):
- A; US 5233101
- Application Number:
- PPN: US 7-958829
- OSTI ID:
- 6416611
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020400* -- Petroleum-- Processing
ALCOHOLS
ALKANES
ALKENES
CATALYSTS
CATALYTIC CRACKING
CHEMICAL REACTIONS
CHEMICAL REACTORS
CONTROL
CRACKING
DECOMPOSITION
DISTILLATES
ENERGY SOURCES
FLUIDIZED BEDS
FOSSIL FUELS
FUELS
GASOLINE
HYDRATION
HYDROCARBONS
HYDROXY COMPOUNDS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
KNOCK CONTROL
LIQUID FUELS
MATERIALS
MINERALS
OCTANE
OPERATION
ORGANIC COMPOUNDS
PETROLEUM
PETROLEUM DISTILLATES
PETROLEUM FRACTIONS
PETROLEUM PRODUCTS
PETROLEUM RESIDUES
PYROLYSIS
REGENERATION
SILICATE MINERALS
SOLVATION
SYNTHESIS
THERMOCHEMICAL PROCESSES
VISCOSITY
ZEOLITES