Two-stage process for conversion of olefins to high octane gasoline

Patent · Tue Apr 02 04:00:00 EST 1991

OSTI ID:6030635

Harandi, M N

This patent describes a continuous process for converting an olefinic feedstock containing ethylene and C{sub 3}+ olefins by catalytic oligomerization and aromatization to produce high octane gasoline. It comprises: contacting the olefinic feedstock in a first catalytic oligomerization zone with a crystalline zeolite oligomerization catalyst at pressure of about 240 to 2900 kPa (20 to 400 psig), temperature of about 170{degrees} to 510{degrees} C. and WHSV of about 0.1 to about 50 hr{sup {minus}1} to convert C{sub 3} + olefins to a first reaction zone effluent stream rich in oligomerized gasoline range hydrocarbons; flashing the first reaction zone effluent stream to separate the first reaction zone effluent stream into a liquid stream rich in C{sub 5} + gasoline and a vapor stream rich in ethylene; and contacting the vapor stream in a second catalytic reaction zone with a crystalline zeolite aromatization catalyst to pressure of about 150 to 1500 kPa (10 to 200 psig), temperature of about 510{degrees} to 820{degrees} C. 950{degrees} to 1500{degrees} F. and WHSV of about 0.3 to 300 hr {sup {minus}1} to convert ethylene and other lower olefins to a second reactor effluent stream rich in aromatic gasoline.

• Assignee: Mobil Oil Corp., Fairfax, VA (USA)
• Patent Number(s): A; US 5004852
• Application Number: PPN: US 7-399182
• OSTI ID: 6030635
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
020500 -- Petroleum-- Products & By-Products
023000 -- Petroleum-- Properties & Composition
ALKANES
ALKENES
CATALYTIC CRACKING
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CONVERSION
CRACKING
DECOMPOSITION
ENERGY CONVERSION
FUELS
GASOLINE
HYDROCARBONS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
KINETICS
LIQUID FUELS
MATERIALS
MINERALS
OCTANE
ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
PYROLYSIS
REACTION KINETICS
SILICATE MINERALS
SYNTHESIS
THERMOCHEMICAL PROCESSES
ZEOLITES