Separation of butene-1 and butene-2 using extractive distillation

Conference · Thu Jan 01 04:00:00 EST 1987

OSTI ID:5406336

Emmrich, G; Lackner, K

In steam cracking plants and in catalytic crackers large amounts of C/sub 4/ hydrocarbons are produced. The butadiene contained therein is often extracted and the isobutene converted into MTBE with methanol. To date, only a few plants have used the residual C/sub 4/ raffinate (raffinate 2) for isolating chemical raw materials. Most of the raffinate 2 produced is used in the fuel sector, a principal reason being that separation and recovery of the substances of interest, i.e. butene-1 and butene-2, has so far been possible only with a great deal of effort and expense owing to the close proximity of those components' boiling-point curves. There has been no lack of endeavours to reduce the effort and expense involved by way of extractive distillation using suitable solvents. While the results achieved were encouraging, they did not produce the decisive breakthrough. This furnished an incentive for our chemists and engineers, who can draw on a wealth of experience with extractive distillation processes for aromatics recovery, to look for a solvent which would make the separation of C/sub 4/ hydrocarbons an economically viable proposition.

• OSTI ID: 5406336
• Report Number(s): CONF-870822-
• Country of Publication: United States
• Language: English

Related Subjects

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10 SYNTHETIC FUELS
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320305 -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Industrial Waste Management
ALCOHOL FUELS
ALKENES
BIOTECHNOLOGY
BUTADIENE
BUTENES
CATALYTIC CRACKING
CHEMICAL PLANTS
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
DIENES
DISTILLATION EQUIPMENT
ECONOMICS
EQUIPMENT
EXTRACTION
FUELS
HYDROCARBONS
INDUSTRIAL PLANTS
MANAGEMENT
MATERIALS RECOVERY
METHANOL FUELS
ORGANIC COMPOUNDS
POLYENES
PROCESSING
PYROLYSIS
RECOVERY
SEPARATION PROCESSES
SOLVENT EXTRACTION
SYNTHETIC FUELS
THERMAL CRACKING
THERMOCHEMICAL PROCESSES
WASTE MANAGEMENT
WASTE PROCESSING
WASTE PRODUCT UTILIZATION