Production of heavier hydrocarbons from light olefins in multistage catalytic reactors

Patent · Tue Nov 29 04:00:00 EST 1988

OSTI ID:6385234

Harandi, M N; Owen, H; Tabak, S A

This patent describes a continuous multistage catalytic process for conversion of light olefins to distillate range of hydrocarbons rich in C/sub 10/ + aliphatics, comprising the steps of: maintaining a fluidized bed of medium pore acid zeolite catalyst particles in a primary reaction stage in a turbulent reactor bed maintained under reaction severity conditions effective to convert a primary ethene-containing olefinic feedstream by passing hot feedstock vapor upwardly through the fluidized catalyst bed at reaction severity conditions sufficient to convert ethene substantially to intermediate range olefins and aromatics in the C/sub 5/-C/sub 9/ range; recovering primary stage effluent, including a liquid stream containing a major amount of aromatics-rich C/sub 5/ + hydrocarbons; contacting a secondary olefinic feedstream comprising C/sub 3/-C-/sub 4/ olefins in a secondary catalytic reactor stage with a series of fixed catalyst bed reactors containing shape selective medium pore acid zeolite oligomerization catalyst at high pressure under distillate mode oligomerization conditions; mixing at least a portion of liquid primary stage effluent containing aromatic hydrocarbon with at least one hot inter-reactor stream containing partially upgraded olefins in the secondary stage, thereby quenching the inter-reactor stream.

• Assignee: Mobil Oil Corp., New York, NY
• Patent Number(s): US 4788366
• OSTI ID: 6385234
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
ALKENES
AROMATICS
CATALYSIS
CATALYSTS
CHEMICAL REACTORS
CRYSTAL STRUCTURE
DISTILLATES
ENERGY SOURCES
FLUIDIZED BEDS
FOSSIL FUELS
FUELS
HYDROCARBONS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
MATERIALS
MICROSTRUCTURE
MINERALS
ORGANIC COMPOUNDS
PETROLEUM
PETROLEUM DISTILLATES
PETROLEUM FRACTIONS
POROSITY
PRODUCTION
ZEOLITES