Process for production of isobutene and propylene from hydrocarb

Details Process for production of isobutene and propylene from hydrocarb Process for production of isobutene and propylene from hydrocarb

1997-10-28

2000-06-13

Griffin, Walter D.

Chemistry of hydrocarbon compounds

Plural serial diverse syntheses

To produce unsaturate

585326, 585329, 585259, 585262, 585261, 585277, 585518, 585643, 585644, 585647, 585670, 208 49, 208 57, C07C 100, C07C 503, C07C 600, C10B 5702

Patent

active

060751738

ABSTRACT:
The present invention concerns a process for the production of isobutene and propylene by metathesis of an olefinic C.sub.4 cut. The process comprises three successive steps: 1) selective hydrogenation of butadiene with isomerisation of butene-1 to butene-2; 2) separation by distillation to produce isobutene overhead, leaving a butene-2 bottom cut; 3) metathesis of the butene-2 cut with ethylene. The advantage of this process is that polymerisation quality propylene can be produced very selectively, in contrast to other processes such as dehydrogenation of propane or other cracking processes.

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patent: 5523502 (1996-06-01), Rubin

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