Conversion of diene-containing light olefins to aromatic hydrocarbons
A continuous process for converting lower olefinic hydrocarbon feedstock to aromatics-rich product by contacting the feedstock in a fluidized bed reaction zone with acidic siliceous zeolite conversion catalyst particles at elevated temperature under exothermic conditions to produce heavier hydrocarbons including gasoline range hydrocarbons is described comprising: maintaining a turbulent fluidized bed of catalyst particles by flow hydrocarbon-containing vapor upwardly through the bed at less than transport velocity; and introducing lower olefinic feedstock comprising at least one C/sub 4/-C/sub 6/ diene component into the fluidized catalyst bed in a lower portion thereof to convert feedstock to heavier hydrocarbon rich in aromatic hydrocarbon without substantial thermal diene degradation thereof prior to contacting conversion catalyst particles in the fluidized bed; separating an aromatics-rich liquid stream from fluidized bed reaction effluent; extracting aromatics components from the liquid stream and recovering a second liquid stream rich in C/sub 5/+ aliphatics hydrocarbons; recycling at least a portion of the second C/sub 5/+ aliphatics-rich stream to the fluidized bed reaction zone; and recovering an aromatics product stream.
- Assignee:
- Mobil Oil Corp., New York, NY
- Patent Number(s):
- US 4751338
- OSTI ID:
- 6834989
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020400* -- Petroleum-- Processing
ALKENES
AROMATICS
CATALYSIS
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL REACTORS
DIENES
FLUIDIZED BEDS
FUELS
GASOLINE
HYDROCARBONS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
LIQUID FUELS
MATERIALS
MINERALS
ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
POLYENES
PRODUCTION
RECYCLING
SILICON COMPOUNDS
THERMAL DEGRADATION
ZEOLITES