Process for conversion of light olefins to LPG and aromatics

Patent · Tue Jan 03 04:00:00 EST 1989

OSTI ID:6331627

Martindale, D C; Andermann, R E; Mowry, J R

A hydrocarbon conversion process is described which comprises passing a hydrocarbon feed stream comprising at least 30 mole percent olefins having 3 to 4 carbon atoms per molecule and also comprising at least 50 mole percent paraffins having 3 to 4 carbon atoms per molecule and containing less than 10 mole percent C/sub 5/-plus hydrocarbons into a catalytic reaction zone operated at low severity conditions and contacting the feed stream with a solid catalyst gallium. A reaction zone effluent stream is produced comprising C/sub 6/-C/sub 8/ aromatic hydrocarbons and C/sub 3/-C/sub 4/ paraffins, with the reaction zone effluent stream containing less than 10 mole percent olefinic hydrocarbons. The low severity conditions include a combination of pressure, feed space velocity and temperature, including a temperature below 425/sup 0/C, which results in a partial conversion of the feed hydrocarbons into aromatic hydrocarbons whereby: (i) when the effluent is separated there are produced a first product stream, which first product stream is rich in C/sub 6/-C/sub 8/ aromatic hydrocarbons and is withdrawn from the process, with the second product stream, which second product stream is rich in C/sub 3/-C/sub 4/ paraffins and is withdrawn from the process, with the second product stream having a flow rate equal to at least 30 wt. percent of the flow rate of the feed stream; and (ii) the mass flow rate of paraffinic hydrocarbons out of the reaction zone exceeds the mass flow rate of paraffinic hydrocarbons into the reaction zone.

• Assignee: UOP Inc., Des Plaines, IL
• Patent Number(s): US 4795844
• OSTI ID: 6331627
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
ALKANES
ALKENES
AROMATICS
CATALYSTS
CHEMICAL COMPOSITION
ELEMENTS
FLUIDS
GALLIUM
HIGH TEMPERATURE
HYDROCARBONS
LIQUEFIED GASES
LIQUEFIED PETROLEUM GASES
LIQUIDS
METALS
NATURAL GAS LIQUIDS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PARAFFIN
PETROLEUM PRODUCTS
PROCESSING
PRODUCTION
SYNTHESIS
WAXES