Oxygenate conversion to olefins with metathesis

Details Oxygenate conversion to olefins with metathesis Oxygenate conversion to olefins with metathesis

2009-08-06

2010-06-08

Dang, Thuan Dinh (Department: 1797)

Chemistry of hydrocarbon compounds

Plural serial diverse syntheses

To produce alicyclic

C585S329000, C585S638000, C585S643000

Reexamination Certificate

active

07732650

ABSTRACT:
A processing scheme and system for enhanced light olefin production, particularly for increased relative yield of propylene, involves oxygenate conversion to olefins and subsequent oxygenate conversion effluent stream treatment including cross-metathesis of 1-butene with 2-butene, metathesis of 2-butene with ethylene, conversion or removal of at least a portion of the isobutene, and/or isomerization of at least a portion of 1-butene to 2-butene to produce additional propylene. The processing scheme and system may further involve a reaction with distillation column for the metathesis of butenes with ethylene to produce propylene and/or a reaction with distillation column for the conversion of isobutenes with an oxygenate-containing material to produce a tertiary ether or alcohol.

REFERENCES:
patent: 5990369 (1999-11-01), Barger et al.

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